KR101824107B1 - composition comprising green tea seed or defatted green tea seed extracts having antiyeast activity and manufacturing method thereof - Google Patents
composition comprising green tea seed or defatted green tea seed extracts having antiyeast activity and manufacturing method thereof Download PDFInfo
- Publication number
- KR101824107B1 KR101824107B1 KR1020160018385A KR20160018385A KR101824107B1 KR 101824107 B1 KR101824107 B1 KR 101824107B1 KR 1020160018385 A KR1020160018385 A KR 1020160018385A KR 20160018385 A KR20160018385 A KR 20160018385A KR 101824107 B1 KR101824107 B1 KR 101824107B1
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- KR
- South Korea
- Prior art keywords
- green tea
- extract
- tea seed
- seeds
- yeast
- Prior art date
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- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/105—Plant extracts, their artificial duplicates or their derivatives
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- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
- A61K36/18—Magnoliophyta (angiosperms)
- A61K36/185—Magnoliopsida (dicotyledons)
- A61K36/82—Theaceae (Tea family), e.g. camellia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
- A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D11/04—Solvent extraction of solutions which are liquid
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Abstract
The present invention relates to an antimicrobial composition comprising an extract of green tea or green tea seeds as an active ingredient and a process for producing the same, wherein the green tea seed extract or the green tea seed extract is used as an active ingredient, It has an advantage of showing no anti-yeast activity effect and at the same time having no side effect on the human body since it contains only natural ingredients.
In addition, the anti-yeast composition according to the present invention can exert a long-term anti-yeast activity effect and can be used in various fields such as foods, cosmetics and pharmaceuticals since it is eco-friendly.
In addition, the anti-yeast composition according to the present invention can be produced by a simple process of extracting green tea seeds or green tea seeds with water using any one of water, C 1 to C 4 lower alcohols and a mixed solvent thereof. It is very economical.
Description
The present invention relates to an antimicrobial composition comprising an extract of green tea seeds or green tea seeds as an active ingredient and a process for producing the same.
Food safety and food anti-corruption are anxiety that are an important part of the food industry. Therefore, much research has been done on the preservative added to prevent or delay the deterioration of these foods.
Preservatives should be preserved in a very small amount, be effective in sustaining and simple to use, be effective against various microorganisms, and be toxic.
In particular, fungi including yeast are contaminated throughout the food to deteriorate the quality of the product and are difficult to inhibit proliferation. In addition, the microorganisms, which are difficult to control with natural preservatives, have a huge economic loss compared with other microorganisms.
There are 18 kinds of preservatives used for the purpose of food preservation, including dehydroacetic acid and its salts, sorbic acid and its salts, benzoic acid and its salts, paraoxybenzoic acid and propionic acid (Food and Drug Administration, Food Safety Agency, 2008, p597 ). Among them, yeast is controlled by using synthetic preservatives such as sorbic acid, benzoic acid, ethyl p-oxybenzoate and methyl p-hydroxybenzoate, or natural materials such as alcohol, yucca extract and mustard essential oil.
However, the extracts of diet, mustard oil and yucca are limited in their properties. Synthetic preservatives accumulate in the body fat tissue during ingestion and are likely to induce long-term toxicity. Some of them are involved in the formation of carcinogenic substances, And it is required to develop a natural anti-yeast preparation which is easy to apply to various foods.
Camellia sinensis has a high polyphenol content and is known to have various physiological activities such as antioxidant, anti-obesity, and anti-cancer. As a result, the consumption of green tea leaves is increasing as people's interest in green tea increases, while green tea is almost discarded after the green tea harvest is over. Research on this matter is very limited both at home and abroad.
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a composition having excellent anti-yeast activity against yeast containing an extract of green tea or green tea seed as an active ingredient.
Another object of the present invention is to provide a production method capable of mass-producing the above anti-yeast composition.
To achieve the above object, the present invention provides an anti-yeast composition comprising green tea seed extract or green tea leaf extract as an active ingredient.
The green tea seed extract or green tea seed oil extract may be water or an extract extracted with 20 to 80% aqueous ethanol solution.
The green tea seed extract may be one obtained by removing the skin of green tea seeds.
The green tea seed extract may be obtained by milking the seedless root of the green tea seeds and using the residue of green tea seeds from which the remaining oil has been removed.
The green tea seed extract may be green tea seed having a water content of 7 to 12%.
The green tea seed oil extract may be a green tea seed oil residue obtained by removing green tea seed oil using an agitator at 600 to 650 kgf / cm 2.
The green tea seed extract was prepared from C andida albicans (Candida albicans) , Candida krusei ( Candida krusei ), Zygosaccharomyces may have antihypertensive activity against any one or more yeast selected from the group consisting of rouxii ( Kluyveromyces spp. ), Kluyveromyces fragilis ( Kluyveromyces sppagillis ), and Pichia membranifaciens ( Pichia membranifaciens ).
In order to attain the above other object, the present invention provides a food preservative comprising the anti-yeast composition as an active ingredient.
In order to achieve the above-mentioned further object, the present invention provides a method for producing an anti-yeast composition comprising the steps of:
(I) extracting green tea seeds or green tea seeds with any one solvent selected from water, C 1 to C 4 lower alcohols and a mixed solvent thereof to obtain green tea seed extract or green tea seed oil extract; And
Ⅱ) filtering and concentrating the green tea seed extract or green tea seed oil extract.
The green tea seed of the step (I) may be a saponified green tea seed.
The green tea seed of step (I) may be the residue of the green tea seed oil from which the sap of the green tea seed is removed and the remaining oil is removed.
The green tea seed of step (I) may have a water content of 7 to 12%.
The green tea seeds may be a residue from which green tea seed oil is removed using an agitator at 600 to 650 kgf / cm 2.
In the step (I), the green tea seeds may have an average particle diameter of 1.0 to 2.0 mm.
When water is used as the solvent in the step I), the reaction may be carried out at 20 to 80 ° C for 0.5 to 5 hours.
When the C 1 to C 4 lower alcohol is used as the solvent in the step (I), the reaction may be carried out at 60 to 80 ° C for 0.5 to 5 hours.
According to the present invention, the green tea seed extract or the green tea seed oil extract is used as an effective ingredient, thereby exhibiting an excellent anti-yeast activity effect even at a low concentration of 1%, and at the same time, have.
In addition, the anti-yeast composition according to the present invention can exert a long-term anti-yeast activity effect and can be used in various fields such as foods, cosmetics and pharmaceuticals since it is eco-friendly.
In addition, the anti-yeast composition according to the present invention can be produced by a simple process of extracting green tea seeds or green tea seeds with water using any one of water, C 1 to C 4 lower alcohols and a mixed solvent thereof. It is very economical.
1 is an actual photograph of green tea leaves, green tea seeds, and green tea seed pads sequentially used in the present invention.
Figure 2 is a graph showing the effect of Pichia membranifaciens (P) on the extract of Example 1 (a), Example 2 (b), Example 3 (c), Example 4 (d), Example 5 This is a photograph showing the results of the disk paper method demonstrating the anti-yeast activity against the tooth membrane branifaciens.
Fig. 3 is a graph showing the results of comparison between the natural extracts of Example 10 (a), Comparative Example 11 (b), Comparative Example 12 (c), Comparative Example 13 (d) Of Kluyveromyces fragilis ( Kluyveromyces flajilis), which is an example of the present invention. At this time, the concentrations of the samples were all 2% (w / v).
4A is a table showing HPLC analysis conditions for detecting the naringenin component contained in the extract according to the present invention.
FIG. 4B is a table showing HPLC analysis conditions for detecting catechins contained in the extract according to the present invention. FIG.
Hereinafter, various aspects and various embodiments of the present invention will be described in more detail.
In the present specification, the term 'defatted green tea seed' is defined as a residue after removing the envelope, the skin and the peel from the green tea seed, and pressing the separated seedless without roasting or roasting to obtain the oil.
The 'green tea seed extract' or 'green tea seed oil extract' is obtained by extracting water from green tea seeds or green tea seeds by heating and extracting the 'green tea seed extract' or 'green tea seed oil seed extract' In the present invention, the green tea seed hot water extract and the green tea seed extract are collectively referred to as a 'green tea seed extract', and the green tea seed extracts and the green tea seed extract are referred to as 'green tea seed extract' Extract '.
In the present invention, the term " antiyeast " refers to inhibiting the growth of yeast or involving death.
One aspect of the present invention relates to an anti-yeast composition comprising an extract of green tea seeds or green tea seeds as an active ingredient. In general, after extracting green tea leaves, green tea seeds and green tea seed oil, which are discarded, Was obtained by using green tea seed bark, and found that the antifreeze activity was excellent despite the fact that it does not contain substances (catechin, polyphenol, etc.) having general antimicrobial activity of green tea, thus completing the present invention.
In particular, there is no disclosure or teaching about the anti-yeast effect that inhibits and inhibits the growth of yeast, and in the case of green tea leaves and green tea seed oil, the anti-yeast activity found in green tea seeds or green tea seeds There was no disclosure or instruction at all.
The green tea seed extract or the green tea seed oil extract may include not only the extract obtained by treating the extractive solvent with the extractive solvent, but also the crude extract. For example, the powder extract may be obtained by an additional process such as vacuum distillation or freeze- The processed product or the fractions obtained by further fractionating the crude extract are also included.
The present invention provides an antimicrobial composition comprising an extract of green tea seeds or green tea seeds as an active ingredient and at the same time controlling the amount of powder of green tea seeds and green tea seeds, The present invention provides a method for producing green tea seed extract or green tea seed oil extract having a great yield and having a large amount of active ingredient.
The green tea seed, which is a raw material of the green tea seed extract, may include both the skin and the seed, or may be the seed of the green tea with the skin removed, preferably the green tea seed. Since the perilla of the green tea seed has no effect on the activity of the yeast, it is not particularly limited to that even if it is used in combination with the seed of green tea. However, since it has no anti-yeast activity, the yield is lowered and unnecessary components It is most desirable to use only the seeds of Mr. Green Tea because they can be mixed.
In the case of the green tea seed oil extract, as described above, the green tea seed oil, which is the material of the green tea seed oil, may be the residue remaining after the oil containing the green tea seed hull and seed oil is removed, The oil may be removed and the residue left over.
Since the perilla of the green tea seed has no effect on the activity of the yeast, it is not particularly limited to that even if it is used in combination with the seed of green tea. However, since it has no anti-yeast activity, the yield is lowered and unnecessary components It is most preferable that the green tea seedlings are only the seeds of the green tea seedlings, from which the oil is removed and remaining.
In addition, the anti-yeast activity of the anti-yeast composition according to the present invention is not observed in green tea seed oil, and the green tea seed extract containing green tea seed oil and the green tea seed oil extract containing no green tea seed oil There was no significant difference in anti - yeast activity. It can be seen that the antioxidant activity is not affected by the green tea seed oil. However, green tea seed extract containing green tea seed oil contains a large amount of unnecessary components, and yield is low. Therefore, green tea seed extract using green tea seed pellets, which is abolished in a large amount, is more preferable from the environmental and economic point of view.
The green tea seed extract or the green tea seed oil extract may be an extract of water, a C 1 to C 4 lower alcohol and a mixed solvent thereof, preferably water or an aqueous 20 to 80% ethanol solution. As will be described later in the Experimental Example, extraction with a mixed solvent of more than 80% lowers the solid yield and causes a problem that the activity of the anti-yeast is lowered by a factor of two or more, and an organic solvent other than ethanol (C 2 lower alcohol) The application is limited. However, the extraction method is not particularly limited.
When water is used as the extraction solvent, the reaction can be carried out at a temperature lower than 90 ° C. When the reaction temperature is higher than 90 ° C, there is a problem that the activity of the enzyme decreases sharply. It is preferable to carry out the reaction at a temperature lower than 90 DEG C for 0.5 to 6 hours, but most preferably at 20 to 80 DEG C for 0.5 to 5 hours, at a temperature exceeding 80 DEG C or for a time period exceeding 5 hours The active ingredient is destroyed and lost and the activity of the anti-yeast is lowered. When the reaction is carried out at a temperature lower than 20 ° C or in less than 0.5 hour, the active ingredient can not be extracted completely, It is preferable to perform the temperature control and the time within the above range.
In addition, when 20 to 80% aqueous ethanol solution is used as the extraction solvent in step (I) of extracting, it can be carried out at less than 90 ° C, and when the operation is carried out at more than 90 ° C, Lt; / RTI >
In the step (I) of extracting, when the extraction solvent is used at a temperature of less than 90 ° C when 20 to 80% aqueous ethanol is used, the extraction is preferably performed for 0.5 to 6 hours, most preferably at 0.5 to 0.5 If the reaction is carried out at a temperature exceeding 80 ° C or for a time exceeding 5 hours, the active ingredient is destroyed and lost to lower the activity of the anti-yeast, and the reaction is carried out at a temperature lower than 60 ° C , And if the reaction is carried out at less than 0.5 hour, the active ingredient can not be completely extracted. In other words, since the yield is the best with respect to the extraction time, it is preferable to perform the temperature control and the time within the above range.
The anti-yeast composition may contain green tea seed extract and green tea seed oil extract, respectively, or may be mixed, and preferably, they are preferably used singly.
In addition, the green tea seed extract or the green tea seed extract in the present invention broadly includes a diluted solution of green tea seed powder or green tea seed powder.
As will be described in the following Experimental Examples, the antifungal composition of the present invention, unlike the conventional green tea leaf extract or green tea seed oil, which is selected from the group consisting of albicans (Candida albicans) , Candida krusei ( Candida krusei ), Zygosaccharomyces rouxii ( Kluyveromyces sppagilis ), Kluyveromyces fragilis ( Kluyveromyces plagilis ) and Pichia membranifaciens Have excellent anti-yeast activity against one or more yeast.
In addition, the anti-yeast composition of the present invention is equivalent to a synthetic preservative such as sodium benzoate and potassium sorbate, which has antimicrobial activity against various microorganisms disclosed in the past, or has an excellent anti-yeast activity, It can be used as an alternative in fields where activity is required.
Conventional synthetic preservatives have disadvantages in that they exhibit antimicrobial activity at a high concentration. In addition, there is a problem that such a synthetic preservative may irritate the human body or cause side effects. Further, it is disadvantageous in that it is not easy to use in fields such as foods or medicines which must inhibit or prevent the growth of yeast.
The anti-yeast composition according to the present invention is environmentally and economically advantageous in that it utilizes green tea seeds or green tea seeds which are equivalent to or superior to the conventional natural preservatives or synthetic preservatives and have anti-yeast activity and are human- It has remarkably superior effect than the conventional natural preservative or synthetic preservative.
The solid content of the green tea seed extract or green tea seed oil extract is not particularly limited, but it is preferable that the solid content of the green tea seed extract or the green tea seed oil extract inhibits and prevents yeast growth even at 0.01% (w / v%), preferably 0.0156% (w / , It is possible to exhibit sufficient antifungal activity if it contains 0.01% or more, 0.02% or more, and preferably 0.03 to 15% (w / v%).
The green tea seed extract or green tea seed oil extract may be a liquid extract or may be dried and pulverized.
Especially, green tea seed extract or green tea seed extract showed antioxidant activity which was not detected in green tea leaf extract containing excessive amounts of catechin, polyphenol component and naringenin, which is known as a main component of green tea.
As described later in the embodiment, the green tea extract seed foil according to the present invention is Escherichia coli (yikolrayi), Listeria The antimicrobial activity was confirmed to be weak against various microorganisms including monocytogenes (Listeria monocytogenes ) and Aspergillus niger ( Aspergillus niger ). However, the antibacterial activity of Kluyveromyces fragilis , candida krusei It was found that the antibacterial activity against Zygosaccharomyces rouxii and Pichia membranifaciens was insignificantly lower than that of Zygosaccharomyces rouxii and Pichia membranifaciens . For example, (S) selected from the group consisting of Kluyveromyces fragilis or candida krusei ( Escherichia coli ) or Listeria monocytogenes ( Listeria monocytogenes, Listeria monocytogenes or Listeria monocytogenes ) in the size (mm) Monocytogenes) It was confirmed that 1.5 to 13 times larger than the one or more bacteria.
In other words, when treated with the same concentration of the antimicrobial composition under the same conditions, the antimicrobial activity against yeast is 1.5 to 13 times higher than the antimicrobial activity against common bacterial strains. In addition, the antimicrobial activity was higher when the antimicrobial composition of the present invention was treated with the antimicrobial composition of the present invention than the yeast composition treated with the synthetic preservative and natural preservative of the same concentration. Accordingly, the green tea seed extract of the present invention has an equivalent or superior antihypertensive activity than conventional synthetic preservatives and natural preservatives.
The antimicrobial composition of the present invention may further comprise a substance having an antimicrobial activity against a specific bacterium according to the use of the effective ingredient.
The anti-yeast composition according to the present invention is not particularly limited to its formulation, but may be in the form of a solution, suspension or emulsion in an oil or an aqueous medium, or may be in the form of a dry powder which is dissolved in water, Oral formulations, antibacterial agents, feed additives, food additives, cosmetic additives or preservatives, but are not limited thereto.
Examples of the food additive include various kinds of cooked foods such as beverage, baking, drink, oil, ice cream, confectionery, rice cake, snack, baby food, liquor, seasoning, retort or canned food.
As described above, the anti-yeast composition is harmless to the human body and can be widely used in fields requiring anti-yeast activity in medicines, cosmetics, foods, fibers, household goods, etc., and can be used in these products to improve the quality and stability of the product .
Unlike conventional synthetic preservatives, the anti-yeast composition according to the present invention exhibits excellent anti-yeast activity without exhibiting any adverse effects on the human body, and therefore can be preferably used as a food preservative or a food anti-decay agent.
Accordingly, in another aspect of the present invention, there is provided a food preservative comprising the anti-yeast composition, which can be used as a food additive, a food additive, and a food additive.
The food preservative agent of the present invention can be used by spraying or adding to food. The amount of the food preservative added to the food can not be uniformly defined depending on the type of the food to be used. However, And may be in the range of usually 0.01 to 20% by weight based on the target food.
The food preservative may further comprise a surfactant for food additives (to increase the solubility of green tea seed extract or green tea seed oil extract) according to the needs of the consumer or the manufacturer, It is preferable to use a sugar ester type surfactant which is anionic surfactant or monoglyceride for food addition.
Another aspect of the present invention relates to a method for preparing an extract of green tea seeds comprising the following steps.
(I) extracting green tea seeds or green tea seeds with any one solvent selected from water, C 1 to C 4 lower alcohols and a mixed solvent thereof to obtain green tea seed extract or green tea seed oil extract; And
Ⅱ) filtering and concentrating the green tea seed extract or green tea seed oil extract.
<Step I>
The green tea seeds may include all or part of the green tea seeds, or may be the seeds of the green tea seeds from which the skin is removed, preferably the green tea seeds. Since the perilla of the green tea seed has no effect on the activity of the yeast, it is not particularly limited to that even if it is used in combination with the seed of green tea. However, since it has no anti-yeast activity, the yield is lowered and unnecessary components It is most desirable to use only the seeds of Mr. Green Tea because they can be mixed.
In the case of the green tea seed bark, as described above, the oil may be removed from the green tea seed bark by removing the grease from the bark of the green tea whose peel is removed, It may be residue.
Since the perilla of the green tea seed has no effect on the activity of the yeast, it is not particularly limited to that even if it is used in combination with the seed of green tea. However, since it has no anti-yeast activity, the yield is lowered and unnecessary components It is most preferable that the green tea seedlings are only the seeds of the green tea seedlings, from which the oil is removed and remaining.
According to an embodiment of the present invention, the green tea seeds preferably have a moisture content of 7 to 12%. If the moisture content of the green tea seeds is less than 7% or exceeds 12%, the yield is 15 And the problem is remarkably lowered.
Generally, green tea seeds have a difference in moisture content of green tea according to the harvesting method. Hadong green tea seeds are harvested in a fresh state and have a high moisture content, and Boseong green tea seeds are harvested in a dried seed state, For example, in the case of Hadong green tea, since the moisture content is high, it may be dried at 60 to 70 ° C for a suitable time so as to have a water content of 7 to 12%.
According to one embodiment of the present invention, the antioxidant activity of the green tea seeds or the green tea seeds is not changed depending on the milling degree, but the solid yield is lowered by at most 0.7 times. Therefore, the green tea seeds have an average particle diameter of 2.0 mm or less, Preferably 1.0 to 2.0 mm. If the average particle size of the green tea seeds or the green tea seeds exceeds 2.0 mm, the problem that the yield of the active ingredient can not be sufficiently extracted during the same extraction temperature and the same extraction time, Occurs.
According to one embodiment of the present invention, the green tea seed may be prepared by dissolving green tea seeds in an amount of 600 to 650 kgf / cm 2, preferably, not roasted or roasted, Lt; 2 > may be the residue remaining after extracting green tea seed oil with an adhesive. This is because, when the extract is extracted using the extract, the yield can be 1.3 times better than that of the case of using the green tea seed cake in which the fat soluble component is removed by using hexane.
In other words, when the extract was prepared with green tea seedlings which had no lipid-soluble components, It is most preferable to use green tea seed oil in which the green tea seed oil, i.e. fat-soluble component, has been removed using an evaporator.
If it is desired to further minimize the impurities of the green tea seed extract, it is preferable to use green tea seed oil roasted with the green tea seed oil as an adhesive to extract the green tea seed oil and use the remaining residue.
In order to obtain a green tea seed extract or a green tea seed extract at a high yield (25% or more, 27% or more), green tea seeds use green tea seeds having an average particle diameter of 1.0 to 2.0 mm and a water content of 7 to 12% Preferably,
With green tea seeds It is preferable to roast the seeds of green tea having a water content of 7 to 12%, and then remove the green tea seed oil using the coagulant and use the remaining residue.
According to one embodiment of the present invention, the green tea seed extract or green tea seed oil extract of the present invention can be extracted using any one selected from water, C 1 to C 4 lower alcohols and a mixed solvent thereof, May be extracted with water or a 20 to 80% aqueous solution of ethanol. As will be described later in the Experimental Example, extraction with a mixed solvent of more than 80% lowers the solid yield and causes a problem that the activity of the anti-yeast is lowered by a factor of two or more, and an organic solvent other than ethanol (C 2 lower alcohol) The application is limited.
Therefore, it is preferable to use water or a 20 to 80% aqueous solution of ethanol in order to produce a human-friendly extract having the best antioxidant activity and excellent yield at the same time.
The extract is preferably pulverized into a dry or non-dried raw material and mixed with 5 to 20 parts by weight of solvent based on 1 part by weight of the ground raw material.
In addition, the step (I) of extracting may be performed at a temperature lower than 90 ° C. when water is used as an extraction solvent. If the temperature is more than 90 ° C., the activity of the enzyme may be deteriorated rapidly. Most preferably 20 to < RTI ID = 0.0 > 80 C < / RTI & If the reaction is carried out at a temperature exceeding 80 캜 or for a time exceeding 5 hours, the active ingredient is destroyed and lost and the activity of the anti-yeast is deteriorated. When the reaction is performed at a temperature lower than 20 캜 or less than 0.5 hour The effective component can not be completely extracted. In other words, since the yield relative to the extraction time is the best, it is preferable to perform the temperature control and the time within the above range.
It is also possible to carry out the reaction at a temperature lower than 90 ° C. when an aqueous solution of C 1 to C 4 lower alcohols, preferably 20 to 80% ethanol, is used as the extraction solvent in the step (I) There may arise a problem that the antifungal activity is rapidly lowered. Most preferably at 60 to 80 ° C. for 0.5 to 5 hours. If the reaction is carried out at a temperature exceeding 80 ° C. or for a time exceeding 5 hours, the active ingredient is destroyed and lost to lower the activity of the anti-yeast And if the reaction is carried out at a temperature lower than 60 ° C or in less than 0.5 hour, the active ingredient can not be extracted completely. In other words, since the yield is the best with respect to the extraction time, Do.
(Step II)
Finally, the obtained green tea seed oil extract is filtered and concentrated to remove solid particles suspended in the extract. A commonly used filtration method can be used. For example, nylon is used to filter particles or freeze Filtration method or the like.
The filtered extract can be used as it is or dried using any one selected from the group consisting of freeze drying, vacuum drying, hot air drying and spray drying in order to efficiently remove only the solvent while minimizing the loss of the active ingredient from the extract , Preferably lyophilized at -40 to -10 ° C and concentrated.
The anti-yeast composition according to the present invention may be contained in an amount of 1 to 30% by weight, preferably 1 to 5% by weight based on the total weight of the composition.
The anti-yeast composition according to the present invention uses green tea seed extract or green tea seed extract as an active ingredient, and has a major difference from other green tea parts such as green tea leaves and roots, Naringenin, known as a major component, has been shown not to exhibit anti-yeast activity, so it can be regarded as an anti-yeast activity effect caused by the role of other active ingredients not indicated. Therefore, the ingredients are not limited to those mentioned herein.
Hereinafter, the present invention will be described in more detail with reference to Examples and the like, but the scope and content of the present invention can not be construed to be limited or limited by the following Examples. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the present invention as set forth in the following claims. It is natural that it belongs to the claims.
< Example 1 to 6> Green tea seeds extract
The raw green tea seeds were dried and crushed to an average particle size of 1.0 to 1.5 cm by 3 rolls of crushing, and the seeds were separated by removing the peel. The separated green tea seedlings are roasted at 110 ° C for 10 minutes and then milked at 600 to 650 kgf / cm 2 for 10 to 15 minutes to extract green tea seed oil, and 100 g of the remaining green tea seeds are recovered.
(1 kg) or 25%, 50%, 75%, 100% ethanol (1 kg) or 100% methanol (1 kg) corresponding to 1 part by weight of 100 g of the recovered green tea seeds. Kg) was added thereto, and the mixture was leached at 25 DEG C for 16 hours using a circulation pump. The filtrate was separated and filtered through a filter paper having a size of 55 mu m to obtain a filtrate.
Next, the filtrate was concentrated under reduced pressure at 40 rpm at 150 rpm to obtain a concentrate. The concentrated extract was lyophilized at -30 ° C to obtain a green tea seed extract. Specific extraction conditions and extraction yield of each extract are shown in Table 1 below.
menstruum
(ml)
brix (%)
brix (%)
yield(%)
< Example 7 to 14> Green tea seeds extract
The raw green tea seeds were dried and crushed to an average particle size of 1.0 to 1.5 cm by 3 rolls of crushing, and the seeds were separated by removing the peel. The separated green tea seeds are roasted at 110 ° C for 10 minutes and then milked at 600 to 650 kg / cm 2 for 10 to 15 minutes to extract green tea seed oil, and 100 g of the remaining green tea seeds are recovered.
Water (750 g) or 75% ethanol (750 g) corresponding to 15 parts by weight was added to 1 part by weight of 50 g of the recovered green tea leaf, and the mixture was leached at each temperature using a circulation pump. The filtrate was separated by filtration through a filter paper having a size of 55 mu m to obtain a filtrate.
Next, the filtrate was concentrated under reduced pressure at 40 rpm at 150 rpm to obtain a concentrate. The concentrated extracts were lyophilized at -30 ° C to obtain a green tea seed extract. Specific extracting conditions and extraction yield of each extract are shown in Table 2 below.
menstruum
(ml)
brix (%)
yield(%)
menstruum
(ml)
brix (%)
yield(%)
< Example 15, 16> Green tea seeds extract.
The raw green tea seeds were dried and crushed to an average particle size of 1.0 to 1.5 cm by 3 rolls of crushing, and the seeds were separated by removing the peel.
In Example 15, 100 g of the ground green tea seedlings was treated with 15 parts by weight of hexane for 2 days from the ground green tea seeds, and then the solvent was removed The fat-soluble component was removed through a degassing process of hexane which was dried at room temperature for 1 day, and the remaining green tea seeds were recovered.
On the other hand, in Example 16, 100 g of the crushed green tea seeds were roasted at 100 DEG C for 15 minutes (roasting), and milk was milked in an agglomerator for 10 to 15 minutes at 600 to 650 kgf / The fat-soluble component is removed, and the remaining green tea seeds are recovered.
Water (750 g) corresponding to 15 parts by weight was added to 1 part by weight of 50 g of the recovered green tea leaf, and the mixture was leached at 50 ° C for 4 hours using a circulation pump. The filtrate was filtered through a filter paper having a size of 55 mu m to obtain a filtrate.
Next, the filtrate was concentrated under reduced pressure at 40 rpm at 150 rpm to obtain a concentrate. The concentrated extract was lyophilized at -30 캜 to obtain a green tea seed extract.
< Example 17, 18. > Mr. Green Tea Hot water extract
First, the green tea seeds are dried and crushed to an average particle diameter of 1.0 to 1.5 cm by three times of roll milling, and the seeds are removed by removing the peel. The seeds of the ground green tea seeds were subjected to different pulverization processes, 15 times of water was added based on the weight of the green tea seeds, and the seeds were leached by using a circulation pump at 50 ° C for 4 hours. Separated, 0.40 μm filter paper The filtrate was collected, concentrated under vacuum, and then lyophilized to obtain a green tea seed extract.
Example 17 is the milling process was performed three times a roll milling step the (average particle size 1.0 to 1.5 ㎝), Example 18 is a three-roll milling step after 3 minutes, conducted by adding the mixer grinding (average particle size of 1.0 to 2.0 mm).
< Example 19 to 24> Mr. Green Tea extract
First, the effect of moisture content of green tea seed, green tea seed, harvested by different harvesting methods on extraction yield was investigated.
First, the harvested green tea seeds were washed with water and dried at a temperature of 60 to 70 DEG C to have various water contents. Thereafter, the mixture is crushed to an average particle diameter of 1.0 to 1.5 cm by three roll milling, and the seedling is removed by removing the peel. 100 kg of crushed green tea seeds and 15 times water as weight were added and leached using a circulation pump at 50 ° C for 4 hours. The filtrate was separated using a 0.40 μm filter paper and dried at 40 ° C , And then lyophilized to obtain a green tea seed hot water extract.
Example 19 is a green tea seed extract obtained by using green tea seeds having a moisture content of 52%, Example 20 is a green tea seed extract obtained by using green tea seeds having a moisture content of 27%, and Example 21 Example 22 is a green tea seed extract obtained by using green tea seeds having a moisture content of 7.3% and Example 23 is a green tea seed extract obtained by using 3.6% moisture And Example 24 is a green tea seed extract obtained by using green tea seeds dried to have a moisture content of 2.5%.
At this time, the green tea seeds were obtained by removing the pericarp, epidermis, and endothelium.
< Example 25> with optimized conditions The obtained Mr. Green Tea Heat number extract.
The raw green tea seeds were washed with water and then dried to have a moisture content of 11% and crushed to an average particle size of 1.0 to 1.5 cm by 3 rolls of crushing. The peel was removed to separate the seeds and 50 g of the separated green tea seeds Water (750 g) corresponding to 15 parts by weight was added thereto, and the mixture was leached using a circulation pump at 50 DEG C for 4 hours. The filtrate was separated and filtered through a filter paper having a size of 55 mu m to obtain a filtrate.
Next, the filtrate was concentrated under reduced pressure at 40 rpm at 150 rpm to obtain a concentrate. The concentrated extract was lyophilized at -30 ° C to obtain a green tea seed extract.
< Example 26> with optimized conditions The obtained Green tea seeds Heat number extract.
The raw green tea seeds are dried and crushed by an average particle diameter of 1.0 to 1.5 cm by three times of roll milling, and the seeds are removed by removing the peel. The separated green tea seeds are roasted at 110 ° C for 10 minutes and then milked at 600 to 650 kgf / cm 2 for 10 to 15 minutes to extract green tea seed oil, and 50 g of the remaining green tea seeds are recovered.
Water (750 g) corresponding to 15 parts by weight was added to 1 part by weight of the recovered green tea seeds, and leached using a circulation pump at 50 ° C for 4 hours. Lt; / RTI > filtered to obtain a filtrate.
Next, the filtrate was concentrated under reduced pressure at 40 rpm at 150 rpm to obtain a concentrate. The concentrated extract was lyophilized at -30 캜 to obtain a hot-water extract of green tea seed oil.
< Example 27> Mr. Green Tea extract.
The green tea seeds hot water extract was obtained in the same manner as in Example 25, except that the green tea seeds which did not remove the outer skin, the perilla, and the safflower were used.
< Example 28> Optimized Green tea seeds Alcohol extract
Green tea seed extract was obtained in the same manner as in Example 26 except that 75% EtOH was used instead of water.
< Comparative Example 1> Green tea leaves Hot water extract
The raw green tea leaves were washed with water and dried to be pulverized so as to have an average particle diameter of 250 to 290 탆. Water (750 g) corresponding to 15 parts by weight was added to 1 part by weight of the pulverized green tea leaves, and the resulting mixture was leached at 90 ° C for 2 hours by using a circulation pump. The filtrate was filtered to obtain a filtrate.
Next, the filtrate was concentrated at 70-80 DEG C at 500 rpm to obtain a concentrate. The concentrated extract was lyophilized at -30 ° C to obtain a hot-water extract of green tea leaves.
< Comparative Example 2> Mr. Green Tea Oil( Mr. Green Tea Oil)
The raw green tea seeds are dried, the outer skin is removed, and crushed to an average particle size of 1.0 to 1.5 cm by 3 rolls of crushing, and the skin is removed by removing the skin. The separated green tea seeds were roasted at 110 ° C for 10 minutes and then milked at 600 to 650 kg / cm 2 for 30 minutes to extract green tea seed oil.
< Comparative Example 3> Green tea pericarp Hot water extract
The green tea seeds hot water extract was obtained in the same manner as in Example 25 except that only the skin of green tea seeds was used.
< Comparative Example 4> Grapefruit seed extract
First, seeds were removed by removing grains of grapefruit seeds, washed with water, and dried at 60 to 70 ° C for 30 to 60 minutes. The dried grapefruit seeds were pulverized so as to have an average particle size of 290 to 250 쨉 m. Then, glycerin having a volume of 5 times the weight was added and mixed and extracted. Then, And dried to obtain grapefruit seed extract (grapefruit seed extract was purchased from Gunpo, Korea)
< Comparative Example 5> lotus leaf blend extract
A lotus leaf blend extract was purchased from Daejongsang (Seoul, Korea).
< Comparative Example 6 to 8> Synthetic preservative
Sodium benzoate (Comparative Example 6), potassium sorbate (Comparative Example 7) and ethyl paraxine ethylbenzoate (Comparative Example 8) were purchased from Eisse R & D Laboratories (Gunpo, Korea).
< Comparative Example 9> parsley Hot water extract
First, the parsley was washed with water and dried at a temperature of 60 to 70 DEG C for 30 to 60 minutes. The dried buttercups were pulverized to have an average particle size of 290 to 250 탆, and then water having a volume of 5 times the weight was added thereto. The resulting mixture was then leached using a circulation pump at 90 캜 for 2 hours. The separated pulp was separated using a 0.40 탆 filter paper The filtrate was collected, concentrated in vacuo, and lyophilized to give a water-in-oil extract.
<
Comparative Example
10>
First, the parsley was washed with water and dried at a temperature of 60 to 70 DEG C for 30 to 60 minutes. The dried buttercups were milled so as to have an average particle size of 290 to 250 탆, and then 50% (v / v) of a 5-fold volume of water was poured and extracted at 70 캜 for 2 hours. The resulting suspension was separated, filtered through a 0.40 탆 filter paper, concentrated under vacuum, and lyophilized to obtain a 50% (v / v) corn syrup extract.
<
Comparative Example
11>
Except that 70% (v / v) alcohol was used in place of 50% (v / v) alcohol, and 70% (v / v) Respectively.
< Comparative Example 12> Hot water extract
The same procedures as in Comparative Example 9 were carried out except that Ganoderma lucidum was used instead of Ganoderma lucidum to obtain a fresh hot water extract.
< Comparative Example 13> freshly 80% (v / v) alcohol extract
(V / v) spirits instead of 50% (v / v) spirits was used in place of buttercups, and the same procedures as in Comparative Example 10 were repeated except that 80% % (v / v) alcohol extract.
< Comparative Example 14> Kelp Hot water extract
The preparation was carried out in the same manner as in Comparative Example 9 except that kelp was used instead of buttercream, to obtain a kelp hot-water extract.
< Comparative Example 15> Onion skin Hot water extract
The onion skin was prepared in the same manner as in Comparative Example 9, except that the onion skin was used instead of the parsley. The onion skin hot water extract was obtained.
< Comparative Example 16> garlic Hot water extract
The same procedure as in Comparative Example 9 was repeated except that garlic pulp with a husk removed was used instead of buttercups to obtain a hot water extract of garlic.
<
Comparative Example
17>
A 70% (v / v) alcohol extract of garlic was obtained in the same manner as in Comparative Example 11, except that garlic pulp with a skin removed was used instead of parsley.
< Comparative Example 18> Ginger Hot water extract
A ginger hot-water extract was obtained in the same manner as in Comparative Example 9, except that ginger was used in place of parsley.
<
Comparative Example
19>
A ginger extract of 70% (v / v) of ginger was obtained in the same manner as in Comparative Example 11 except that ginger was used in place of parsley.
< Comparative Example 20> Hot water extract
The same procedure as in Comparative Example 9 was carried out except that lupine was used in place of parsley, to thereby obtain a hot water extract of Daehata.
< Comparative Example 21> Greater than 70% (v / v) alcohol extract
The preparation was carried out in the same manner as in Comparative Example 11, except that lupine was used in place of parsley, and a 70% (v / v) alcohol extract was obtained.
< Comparative Example 22> Hot water extract
The same procedure as in Comparative Example 9 was carried out except that chrysanthemum was used in place of parsley, to obtain a hot water extract of Chrysanthemum hull.
< Comparative Example 23 > 70% (v / v) alcohol extract
The preparation was carried out in the same manner as in Comparative Example 11, except that the extract was used in place of the parsley, to thereby obtain a 70% (v / v) alcohol extract of Kakugaku.
< Comparative Example 24> Mr. Cho Hot water extract
The same procedure as in Comparative Example 9 was repeated except that the seedlings were used in place of the parsley, to obtain a hot-water extract of the canola seedlings.
<
Comparative Example
25>
The preparation was carried out in the same manner as in Comparative Example 11, except that the seedlings were used in place of parsley, to thereby obtain a 70% (v / v) alcohol extract of Lycopersicon esculentum.
< Experimental Example 1> Green tea seeds The yield according to extraction conditions and Anti-yeast activity Comparison (1) - Selection of solvent.
The antifungal activity of the green tea seed extract (hot water or organic solvent) prepared in Examples 1 to 6 is shown in Table 3 and FIG. 2 through disk paper method and spot-on-lawn analysis.
The disk paper method was used. Pichia membranifaciens strains were pre-cultured and 100 μl of the culture solution in which the absorbance (A 640 ) at a wavelength of 640 nm was constantly suspended in the range of 0.6 to 0.7 was dispensed in the above-mentioned flat plate culture medium, followed by spreading.
Thereafter, 50 μl of 0.5% aqueous solution of each extract was absorbed into a sterilized 8.0 mm paper disk (ADVANTEC, Japan) twice, and the strain was brought into close contact with the medium on which the strain had been smoothed, And cultured in a bacterial incubator for 48 hours. After incubation, the presence or absence (mm) of a transparent inhibition clear zone formed around the filter paper disk confirmed the antibacterial effect.
The spot-on-lawn assay measures the activity unit (AU) of each extract. Each extract (2% each extract) is diluted 2-fold in succession to take the inverse of the maximum dilution factor forming the inhibitory ring , And this value was multiplied by a conversion factor converted to 1 ml, and expressed as AU (activity unit) / ml.
As shown in Table 3, it was confirmed that the hot-water extract of green tea seed prepared from Example 1 had excellent anti-yeast activity and excellent yield.
On the other hand, in the case of extracting with C 1 to C 4 lower alcohol or a mixture of them with water, 20 to 80% ethanol was used (Examples 2 to 4), the solid yield was 6% Mm, the solid yield of the green tea seedlings extracted with 100% organic solvent was 4.1% or less as in Example 5 or 6, and the extract yield of the extract of Example 5 was greatly reduced to 8.5 mm .
In addition, since the extract of Example 6 has a limitation in that it is difficult to use for food, it is confirmed that water or a 20 to 80% ethanol aqueous solution is preferable as an extraction solvent of the green tea seed extract.
Among these, the green tea seed extract extracted from Example 1 and Example 4 is most preferable because it has the best antioxidant activity and excellent yield, but also uses a solvent which can be used for food.
< Experimental Example 2.> Green tea seeds The yield according to extraction conditions and Anti-yeast activity Comparison (2) - Selection of extraction temperature and extraction time.
Examples 7 to 14 Antifreeze activity against Pichia membranifaciens of green tea seed extract (hot water or organic solvent) was measured by disk paper method and spot-on-lawn analysis. Respectively.
At this time, the disk paper method and the spot-on-lawn analysis were performed in the same manner as in Experimental Example 1.
As shown in Table 4, when extracting with hot water, it is preferable that the extraction is carried out at less than 90 ° C as in Examples 7 to 9, and when extracting using 20 to 80% aqueous ethanol solution, as in Examples 11 to 13 It is preferable to be carried out at less than 90 캜. When extracting at room temperature or below, the extraction time must be prolonged to obtain a desired yield, which is economically inefficient.
Most preferably, it is 0.5 to 5 hours at 20 to 80 ° C in the case of hot water extraction, and most preferably 0.5 to 5 hours at 60 to 80 ° C when 20 to 80% aqueous ethanol solution is used. This is because the contrast yield is the best condition.
< Experimental Example 3.> According to the degreasing process Green tea seeds The yield of the extract and Anti-yeast activity ratio Bridge (3)
Examples 15 and 16 Pichia membranifaciens and Zygosaccharomyces of green tea leaf extract (hot water) Antioxidant activity against rouxii (Gigasakomiessoxia) was measured by using MIC (minimal inhibitory concentration), and the results are shown in Table 5 below.
The MIC (minimum inhubition concentration) test method is as follows.
Yeast mold medium (yeast extract 0.3%, malt extract 0.3%, peptone 0.5%, dextrose 1%, pH 6.2) was used as yeast culture medium and indicator diluent.
Two serial dilutions of each extract were prepared in a 2% concentration range using a 96-well microtiter plate. After culturing the culture of each strain overnight, the final microbial concentration of each culture was adjusted to 2 x 10 7 CFU / ml by comparing the turbidity of each culture with 0.5 McFarland standard. The culture (100 μl) was added to each dilution (100 μl) of the extract prepared from Examples 15 and 16 to make a final 200 μl. The plates were incubated for 24 hours at 37 ° C for bacteria and at 48 ° C for 30 ° C for yeast Time.
The MIC is expressed by turbidity, which is the minimum concentration of the sample that inhibits growth, ie, the microorganism does not exhibit visible growth.
As shown in Table 5, it can be seen that the extraction yield of green tea seed extract prepared from Example 16 is superior to that of the green tea seed oil extract prepared from Example 15.
In other words, the green tea seed extract of Example 15 and Example 16 had the same anti-yeast activity but had a better extraction yield than the green tea seed cake (Example 16) from which the oil was extracted from the green tea seed through the pressing process Respectively.
Therefore, it is most preferable that the green tea seed extract is extracted from the green tea seed with an adhesive and the remaining residue is used as green tea seed oil.
< Experimental Example 4.> Mr. Green Tea The yield according to extraction conditions and Anti-yeast activity Comparison (1) - Mr. Green Tea Milling condition
Examples 17 and 18 Pichia of green tea seed extract (hot water) The antifungal activity against membranifaciens and Zygosaccharomyces rouxii was measured by using MIC (minimum inhibitory concentration), and the results are shown in Table 6 below. At this time, the MIC test method was performed in the same manner as in Experimental Example 3.
As shown in Table 6, as the degree of grinding of green tea seeds increases, the extraction yield is increased. As a result, it can be seen that the yield is improved when the average grain size is 1.0 to 2.0 mm.
< Experimental Example 5.> Mr. Green Tea The yield according to extraction conditions and Anti-yeast activity Comparison (2) - Water content
Examples 19 to 24 Pichia of green tea seed extract (hot water) The antifungal activity against membranifaciens and Zygosaccharomyces rouxii was measured by using MIC (minimum inhibitory concentration), and the results are shown in Table 7 below. At this time, the MIC test method was performed in the same manner as in Experimental Example 3.
As shown in Table 7, when green tea seed extracts were obtained using green tea seeds having a moisture content of 20% or more, or when green tea seed extracts were obtained from dried green tea seeds having a water content of 3.6% or less, Is not affected, but the yield is remarkably lowered to less than 15%.
On the other hand, it can be confirmed that excellent extraction yields of 17% or more are obtained when green tea seeds having a moisture content of 7 to 12% are used, as in the green tea seed extract of Examples 21 to 22.
Therefore, in the green tea seed extract, it is most preferable to use a dried green tea seed so that the moisture content of the green tea seed is 7 to 12%.
< Experimental Example 6.> Green tea leaves / Mr. Green Tea / Green pea seeds Of hot-water extract Anti-yeast Active comparison (1).
The MIC (minimum inhibitory concentration) of the extracts prepared from Examples 25 and 26 and Comparative Examples 1 and 2 was determined by using a conventional culture medium dilution method.
The antimicrobial activities of the extracts prepared from Examples 25 and 26 and Comparative Examples 1 and 2 were determined by using Pichia membranifaciens ( Candida albicans ), Candida albicans (Candida albicans), Escherichia E. coli (E. coli ) and Bacillus cereus ( Bacillus cereus ). The results are shown in Table 8 below.
The MIC (minimum inhubition concentration) test method was performed in the same manner as in Experimental Example 3.
-: not tested.
As shown in Table 8, it was confirmed that green tea leaves (Comparative Example 1) had only anti-bacterial activity, and green tea seed oil (Comparative Example 2) showed excellent antibacterial activity. On the contrary, . Examples 25 to 26 According to the present invention, it is confirmed that the hot water extract of green tea seeds or green tea seeds exhibits very good antifungal activity while showing almost no antibacterial activity.
In other words, green tea and green tea seed extract showed antifungal activity unlike green tea leaves and green tea seed oil.
< Experimental Example 7.> Green tea leaves / Mr. Green Tea / Green pea seeds Of hot-water extract Anti-yeast Active comparison (2).
(Example 25), green tea seed extract (Example 26), green tea leaf extract (Comparative Example 1) and the green tea seed extract (Example 25) according to the present invention were compared to each other in order to compare the antifungal activities of green tea leaf and green tea seed extract. Were analyzed for antimicrobial activity against various microorganisms.
The strains ( candida krusei (Candida krusei )) used to confirm the antibacterial activity against each of the above samples were purchased from the Gene Bank of Korea Research Institute of Bioscience and Biotechnology. Liquid medium and plate medium were prepared using YM-medium (Yeast Mold broth) for the culture of the strain.
The antimicrobial activity was determined by disk paper method. Each strain was pre-cultured, and 100 μl of the culture suspension in which the absorbance (A 640 ) at a wavelength of 640 nm was constantly maintained at 0.6 to 0.7 was dispensed in the above-mentioned plate medium, and then the resultant was spread.
Thereafter, a sample diluted with 1% and 5% of an aqueous solution on a sterilized 8.0 mm paper disk (ADVANTEC, Japan) was absorbed twice in 50 쨉 l portions, adhered to the medium on which the strain had been smoothed, And cultured in a bacterial incubator for 48 hours. After incubation, the presence or absence (mm) of a transparent inhibition clear zone formed around the filter paper disk confirmed the antibacterial effect.
The anti-yeast activity of each of the extracts of Example 25, Example 26 and Comparative Example 1 was examined to determine whether a growth inhibitory ring was formed as '+' and a non-growth inhibitory ring as '-' Mm) were measured and shown in Table 9.
As shown in Table 9, it can be seen that the hot water extract of Example 10 of the present invention (Example 26) and the hot water extract of green tea (Example 25) exhibit a strong antifungal activity against Candida krusei (Candida krusei) .
On the other hand, the green tea leaf extract of Comparative Example 1 had no antifungal activity.
< Experimental Example 8> Green tea seeds / Mr. Green Tea / Mr. Green Tea pericarp / Mr. Green Tea Genial Anti-yeast activity compare.
The MIC (minimum inhibitory concentration) of the extracts prepared from Examples 25 to 27 and Comparative Example 3 was determined by using a conventional culture medium dilution method.
The antifungal activities of the extracts prepared from Examples 25 to 27 and Comparative Example 3 were measured for Pichia membranifaciens ( Pichia membranifaciens ), and the results are shown in Table 10 below.
As shown in Table 10, the activities of green tea seeds and green tea seeds were not significantly different, but the antioxidant activity was not observed in the green tea seed extracts. The antioxidant activity was observed in the green tea seeds seed extract, The antifungal activity according to the present invention is attributable to the components present in the green tea seed portion.
< Experimental Example The present invention relates to a preservative, Anti-yeast Comparison of the activity of the composition
(One) Green tea seeds Hot water extract and Conventional natural preservatives / synthetic preservatives Anti-yeast activation ratio School
In order to compare the antimicrobial activity of green tea seed oil with the natural preservative and the synthetic preservative, the green tea seed extract (Example 26) according to the present invention and Comparative Example 4 (grape seed extract), which is a conventional natural preservative, 5 (lotus leaf blend extract) and the conventional synthetic preservative of Comparative Example 6 (sodium benzoate), Comparative Example 7 (potassium sorbate) and Comparative Example 8 (ethyl paroxycinnamate).
The antimicrobial activity was measured by the disk paper method using each sample. Experimental procedure was the same as Experimental Example 1, and the presence or absence of a transparent inhibition clear zone formed around the filter paper disk The size (mm) was used to confirm the antibacterial effect.
However, the ethyl paroxinobenzoate of Comparative Example 8 was diluted with 50% (v / v) ethanol. The ethanol solvent was absorbed into a disk paper so as not to interfere with the antimicrobial activity measurement, and the solvent was completely volatilized. Respectively.
The antimicrobial activity against each of the samples was examined to determine whether the growth inhibition ring was formed as '+' and the growth inhibition ring was formed as '-', and the diameter (mm) of the growth inhibition circle around the disk was measured and shown in Table 11.
As shown in Table 11, Kluyveromyces fragilis ( Kluyveromyces plagilis), Candida kruse i (Candida krusei) results done comparing the anti-yeast activity against, tea seed foil hot-water extract of the present invention (Example 26) is an example of excellent and comparison (conventional natural preservatives than synthetic preservatives (Comparative Example 6-8) 4 , And 5), respectively.
The synthetic preservative showed excellent antimicrobial activity against various microorganisms at a high concentration and the conventional natural preservative has antimicrobial activity against various microorganisms at a low concentration. However, in the case of the green tea seed starch hydrolyzate according to the present invention 26) have excellent antifungal activity against Kluyveromyces fragilis (Kluyveromyces plagilis) and Candida krusei (Candida krusei) yeast.
(2) Green tea seeds extract/ Mr. Green Tea Evaluation of Growth Inhibitory Activity by Co-Culture of Extract / Pichia membranifaciens ( Pichia Membrani Fassien ))
To 5 ml LB liquid medium was added Pichia 50 [mu] l of the pre-culture of membranifaciens ( Phicia membranifiasense ) and extracts (Examples 25, 26, 28 and Comparative Example 6) were added in an amount appropriate for each ppm concentration and shaken in an incubator for 24 hours at 37 [ Lt; / RTI >
After 24 hours, the degree of growth of the strain was examined by measuring the absorbance at 600 nm to determine whether the growth inhibition of the extract (degree of antibacterial activity) was observed. The results are shown in Table 12 below.
At this time, the strain cultured under the same conditions without adding the extract was used as a control.
(Green tea extract)
(Green tea seed extract)
(Green tea seed extract)
(Sodium benzoate)
(A 600 )
As shown in Table 12, it can be seen that as the concentration of Example 26 was increased, the growth of the culture solution co-cultured with Example 26 (green tea seeds hot water extract) was suppressed as compared with the control. On the other hand, Example 28 (green tea seed extract) showed the better antimicrobial activity at the same concentration as that of Example 26, and Example 25 (green tea seed extract) showed lower antimicrobial activity.
Comparative Example 6 When compared at the same concentration with the synthetic preservative sodium benzoate, Comparative Example 6 had a stronger antimicrobial activity at 500 ppm than Example 26, but at 2500 ppm, Example 26 was superior to Comparative Example 6 at 1000 ppm It can be confirmed that it has antibacterial activity.
< Experimental Example 10> Green tea seeds Hot water weights Comparison of anti-yeast activity of extracts recovered from other natural substances
In order to comparatively analyze the antimicrobial activity of the extract of green tea seedlings and the extracts of buttercups, red pepper, kelp, garlic, ginger, green onion, green onion and lycopodium, the green tea seed extract (Example 26) Comparative Example 11 (Extract of 70% (v / v) water extract), Comparative Example 12 (Extract of hot water extract), Comparative Example 10 (Extract of water extract), Comparative Example 10 (Extract of 50% Comparative Example 17 (hot water extract of onion skin), Comparative Example 16 (hot water extract of garlic), Comparative Example 17 (70% of garlic), and Example 13 (freshly extracted 80% (vinegar extract), Comparative Example 18 (ginger hot water extract), and Comparative Example 19 (
The antimicrobial activity was measured by the disk paper method using each sample. Experimental procedure was the same as Experimental Example 1, and the presence or absence of a transparent inhibition clear zone formed around the filter paper disk The size (mm) was used to confirm the antibacterial effect.
The antimicrobial activity against each of the samples was examined to determine whether the growth inhibitory ring was formed as '+' and the absence of growth inhibition as '-', and the diameter (mm) of the growth inhibitory circle around the disk was measured and shown in Table 13. At this time, each of the samples was used at a concentration of 5% (concentration (mg / ml);%).
As shown in Table 13 and FIG. 3, no anti-yeast activity was observed in the hot-water extract or the alcoholic extract recovered from natural substances other than the hot-water extract of green tea seeds according to the present invention (Example 26).
< Experimental Example 11> Green tea leaves , Green tea leaves The extract and Green tea Mr. Green Tea Analysis of Chemical Composition of Extracts.
The chemical composition of the green tea leaf of Comparative Example 1, the green tea leaf of the raw material and the chemical composition of the green tea seed extract of Example 25 and the green tea seeds thereof were analyzed and shown in Table 14 below.
The chemical components were analyzed by HPLC using the following methods.
(One) Naringenin
First, each of the hot-water extract of green tea leaves of Comparative Example 1, green tea leaves, green tea seed extract powder of Example 25 and 0.1 g of green tea seed powder were precisely taken, and 1 ml of sodium acetate buffer, Novozym 33095, Pectinex Ultra SP-L and Viscozyme After incubation at 37 ° C and 150 rpm for 24 hours, 200 μl of the hydrolyzed solution was mixed with 800 μl of ethanol and centrifuged (10000 rpm, 4 ° C, 10 min) to obtain 0.45 The solution, which was filtered with a ㎛ PTFE syringe filter, was analyzed by HPLC. At this time, HPLC analysis was performed under the conditions described in FIG. 4A.
In HPLC analysis, 10 mg of the standard substance Naringnin was precisely weighed and dissolved in 10 ml of methanol (1000 μg / ml), diluted with methanol, and used as a working solution.
(2) Crude saponin
First, the hot-water extract of green tea leaves of Comparative Example 1, green tea leaves, green tea seed extract powder of Example 25 and 5 g of green tea seed powder were each taken in a flask, and 50 ml of methanol was added thereto, followed by stirring at room temperature for about 1 hour The filtrate was then filtered through a concentrated flask. After repeating the above procedure for the residue, the filter paper was washed with 50 ml of methanol, and the combined methanol was concentrated under reduced pressure. Then, the filtrate was dissolved in distilled water (50 ml), put in a separating funnel, 50 ml of a saturated butanol solution was added thereto, The mixture was allowed to stand until the water and butanol layer were completely separated. The butanol layer was collected separately, and the water-saturated butanol extraction operation was repeated two more times in the same manner as above. The entire recovered butanol solution was transferred to a separatory funnel, and then 50 ml of distilled water was added thereto, followed by shaking to completely separate the water layer and the butanol layer. After the water layer was removed, the butanol layer was transferred to a previously concentrated flask, and concentrated under reduced pressure. 50 ml of ether was added to the concentrated residue, and the mixture was refluxed for 30 minutes in a water bath at 46 ° C to remove the ether. And the crude saponin content was determined according to the following formula (1). ≪ tb > < TABLE >
In the above equation,
The weight after drying is the total weight of the water containing the concentrated residue after transferring the sample in water and concentration under reduced pressure,
The weight of a handwoven handwriting means the weight of a handwheel that does not contain any concentrated residue,
(3) total phenol
First, an appropriate amount of each of the green tea leaf extract, the green tea leaf, the green tea seed extract powder of Example 25 and the green tea seed powder of Comparative Example 1 was precisely weighed, dissolved in 1 ml of water, centrifuged (3,000 rpm, 10 min) And the supernatant was used as the test solution.
100 μl of a Folin-ciocalteu reagent (Fluka, 47641, Buchs, Switzerland) was added to 1 ml of the diluted solution containing 900 μl of the purified water, and the mixture was allowed to stand for 5 minutes. Then, 7% (w / v) Na 2 After adding 1 ml of CO 3 solution, 400 μl of purified water was added, mixed well, left at room temperature for 90 minutes, and then absorbance was measured at 750 nm.
The total phenol content of the sample extracts was calculated from the standard calibration curve obtained by analyzing the total phenol content with chlorogenic acid (0-1000 ㎍ / ㎖; Sigma Chemical Co., St. Louis, Mo., USA) gt; mg < / RTI > gallic acid equivalent per gram.
(4) Catechins analysis
And analyzed by the method of food revolution. Specifically, first, a predetermined amount (0.2 g) of powder of hot-water extract of green tea leaves, green tea leaves, green tea seed extract of Example 25 and green tea seed powder of Comparative Example 1 was precisely weighed and dissolved in methanol (50 ml) PTFE).
Standard products were diluted with 1000 μg / ml stock solutions of epigallocatechin (EGC), epicatechin (EC), epigallocatechin gallate (EGCG), and epicatechin gallate (ECG). At this time, HPLC analysis conditions were performed under the conditions described in FIG. 4B.
As shown in Table 14, green tea seeds were found to have differences in green tea leaves and chemical components. Specifically, naringenin contained more green tea seeds, and phenol and crude saponin were significantly lower. Especially, catechin, which is known to have antimicrobial activity, was not observed in green tea seeds.
That is, the green tea seed extract obtained by using the green tea seed extract obtained by using the green tea seed extract obtained by removing the fat-soluble component from the green tea seed according to the present invention has a low content of the chemical components known to have the general antibacterial activity of green tea, And the antifungal activity of the green tea seeds or green tea seed extract according to the present invention was not observed in the green tea leaf extract and the green tea seed oil. Therefore, the anti-yeast activity of the green tea seeds or the green tea seed extract was determined by the phenol and crude saponin It can be seen that this is not caused by.
< Experimental Example 12> Narin Genin by Anti-yeast activity analysis.
In order to confirm that the anti-yeast activity of the green tea seed or green tea seed extract according to the present invention is not an anti-yeast activity by the naringenin, the green tea leaves having different chemical components are different from the green tea seeds or the green tea seed extract, ≪ / RTI > activity.
(Example 25), green tea leaf extract (Example 26), green tea leaf extract (Comparative Example 1) and an aqueous solution of naringenin (25 쨉 g / ml) as a polaronoid component according to the present invention The antifungal activities of Zygosaccharomyces rouxii and Pichia membranifaciens were analyzed.
The strains (Zygosaccharomyces rouxii and Pichia membranifaciens) used to confirm the antimicrobial activity of each of the above samples were purchased from the Gene Bank of Korea Research Institute of Bioscience and Biotechnology. Liquid medium and plate medium were prepared using YM-medium (Yeast Mold broth) for the culture of the strain.
The antimicrobial activity was determined by disk paper method. Each strain was pre-cultured, and 100 μl of the culture solution in which the absorbance (A 640 ) at a wavelength of 640 nm was constantly maintained at 0.6 to 0.7 was dispensed in the above-mentioned plate culture medium, and then plated.
Thereafter, 50 μl of the sample was absorbed twice onto a sterilized 8.0 mm paper disk (ADVANTEC, Japan), and the microorganism was adhered to the medium on which the microorganism was smoothed, followed by culturing in a 37 ° C bacterial incubator for 48 hours. After incubation, the presence or absence (mm) of a transparent inhibition clear zone formed around the filter paper disk confirmed the antibacterial effect.
The anti-yeast activity of the aqueous solutions of Example 25, Example 26, Comparative Example 1 and naringenin was examined to determine that the growth inhibitory rings were formed as '+' and those not formed as '-' (Mm) were measured and shown in Table 15. < tb > < TABLE >
As shown in Table 15, in the same manner as the above-mentioned experimental results, only the green tea leaf extract showed significant activity against Bacillus subtilis, and no remarkable activity was observed for all extracts of Listeria monocytogenes ( Listeria monocytogenen ) An inhibitory activity was observed.
It was confirmed that naringenin, which is a main polymeric boronoid component present in green tea seedlings, does not have antimicrobial activity at all in the range of 5 to 50 μg. Therefore, the green tea seed extract of the present invention is produced by a component other than naringenin Which is an anti-yeast activity.
In addition, Zygosaccharomyces For the rouxii and Pichia membranifaciens yeast cells , the green tea seed water extracts of Examples 25, 26, and 28 of the present invention, including the green tea seed extracts or the alcohol extracts, have activity , And green tea leaf hydrothermal extract showed no activity.
Claims (13)
Removing the peel from the crushed green tea seeds and obtaining seeds;
Roasting the seeds and then obtaining green tea seed oil and green tea seed oil using an agitator at 600 to 650 kgf / cm 2; And
And extracting the green tea seeds at 50 to 70 DEG C for 4 to 6 hours,
, Which is composed of C andida albicans (Candida albicans) , Candida krusei (Candida krusei ), Zygosaccharomyces rouxii ( Kluyveromyces spp. ), Kluyveromyces fragilis ( Kluyveromyces plagilis ) and Pichia membranifaciens A method for producing a high yield of green tea seed oil extract having high antifungal activity against any one or more yeast selected from the group consisting of
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| Yuji Yamauchi 외4명,‘Development of a Simple Preparation Method for Tea-Seed Saponins and Investigation on Their Antiyeast Activity, JARQ 제35권제3호, 185-188쪽,(2001)* |
| 윤원호 외 3명, ‘차나무 종자 추출물의 항균활성 및 항종양활성’, 한국식품과학회지 제37권제1호, 108-112쪽, 2005년 02월.* |
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| KR20200056035A (en) * | 2018-11-14 | 2020-05-22 | 건국대학교 글로컬산학협력단 | Composition for preservation of a source of livestock feed comprising metabisulfite and preparation method of livestock feed using the same |
| KR102196047B1 (en) | 2018-11-14 | 2020-12-29 | 건국대학교 글로컬산학협력단 | Composition for preservation of a source of livestock feed comprising metabisulfite and preparation method of livestock feed using the same |
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