JPH119188A - Production of pressed juice powder of leaf of thea sinensis l. having gastric mucosal protecting action - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce the subject more effective a safer powder, desirable for the aging society and administrable without adverse effects by steaming a leaf of Thea sinensis L., then cooling the steamed leaf thereof, compressing the cooled leaf and subsequently drying the resultant pressed juice. SOLUTION: This pressed juice powder is produced by placing a fresh leaf of Thea sinensis L. in a steaming basket, then rapidly cooling the steamed leaf, compressing the cooled leaf thereof with a press and drying the resultant pressed juice. Since the leaf of the Thea sinensis L. is discolored to brown and deteriorated in flavor when allowed to stand in a just plucked state for >=5 hr, the fresh leaf within 5 hr at most after the collection is preferably used. Effects of this invention are not changed even by producing the powder in any seasons; however, a more desirable raw material is a leaf of the Thea sinensis L. of a new bud especially good in flavor and taste.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a method for producing tea leaf pressed juice powder having a gastric mucosa protective action which can be taken more effectively, safely and without side effects, which is desired in an aging society.

[0002]

2. Description of the Related Art Tea leaves (Thea sinensis L, Camellia)
After being processed and adjusted in various ways, it is drunk around the world as green tea, oolongcha, pualcha, red tea, and even green tea. The comprehensive classification can be roughly divided into non-fermented tea such as green tea, fermented tea such as red tea, and semi-fermented tea such as oolonga according to the presence or degree of the fermentation process.
Both are used mainly in a state extracted with boiling water, but powdered ones such as matcha are also used.

[0003] It has already been reported that tea leaves have many medicinal effects such as aging prevention, anti-carcinogenic activity, and inhibition of cholesterol absorption, and due to drastic eating, stress and the like in remarkable changes in the social environment. It is known that the incidence of ulcers that occur is increasing year by year.

On the other hand, a conventional method for producing tea leaves will be described by taking green tea (sencha) as an example. The picked tea leaves are put in a steaming basket, steamed for about 40 seconds, and cooled immediately. The softened leaves are defrosted on a simmer (roasting furnace) at about 130 ° C.
After being subjected to kneading operations such as foliage, rotating firs, medium firs, rolling firs, finishing firs, etc., they are dried in a furnace at about 60 ° C. to make a rough tea having a water content of about 20%. Since rough tea is not uniform, re-burning is performed while selecting it appropriately, and the water content is about 4
% Or less. This is referred to as hand fir making, which is currently also used in machine making. By adding processes such as fermentation and the action of oxidase to this method, red tea, oolong tea and the like can be obtained.

[0005] The present inventor has proposed that natural products other than tea leaves,
Among a number of systematic tests for anti-ulcer effect, etc., weak efficacy was found in the case of hydrochloric acid / ethanol ulcer, which is an experimental model for the symptoms of gastric mucosa roughening due to heavy drinking and overeating, in particular, in the weakness of green tea. However, the powder is large in volume and cannot be taken in large quantities.

[0006]

Therefore, the present inventor has proposed:
Using tea leaves containing a large number of active ingredients and easily drinkable daily, an extraction method in which a protective effect on gastric mucosa was remarkably recognized was examined. In addition, tea leaves are a luxury item,
It is also important not to impair the flavor, aroma and color of the fresh tea. As a result of repeatedly examining the use of tea leaves that can bring out their functionality significantly and also become a favorite item, the pressed juice powder of tea leaves has never been used and is contained in tea leaves and processed tea leaves. It has been found that powder produced by a squeezing method capable of extracting all the components, especially freshly picked tea leaves, has a strong gastric mucosal protective effect, and the object of the present invention has been achieved.

[0007]

The present invention is completed by the following method. In other words, after putting fresh tea leaves in a steaming basket and steaming, the tea leaves are cooled immediately, and the pressed juice obtained by compressing the tea leaves with a press machine is dried to obtain a tea leaf pressed juice having a gastric mucosa protective action. A powder can be provided.

[0008] As a comparison of the product of the present invention, the effect of a water extract prepared from commercially available red tea, green tea, oolong tea, green tea and the like by a conventional extraction method on the protection of the gastric mucosa was examined using rats. No remarkable efficacy was observed.

[0009] On the other hand, if the tea leaves are left for more than 5 hours in a freshly picked state, they turn brown and have a reduced flavor. Therefore, according to the method of the present invention, fresh tea leaves within at most 5 hours after collection are obtained. Used. Tea leaves 8 to 12 hours after collection were also examined, but both flavor and medicinal effects were reduced. Cabbage squeezed juice powder, which is known to be effective for gastric ulcer, was treated in the same manner as in the present invention and used as a control.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The product of the present invention is
In the case of an adult, taking 10 to 100 mg per day as it is is sufficiently effective. Taking Matcha as an example,
At about one-fourth the equivalent effect appears.

The dosage form used may be a pressed powder,
Granules or tablets may be prepared by adding an appropriate excipient.

Although the effects of the present invention do not change when produced in any season, a more desirable raw material is sprout tea leaves which have particularly good flavor and flavor. In addition, tea leaves have a very strong antioxidant action, as is known, and if the pressed juice is left as it is, it will be oxidized by electricity, and the flavor and medicinal properties will decrease, so freeze drying or spray drying It is important to dry it.

Next, the present invention will be described in detail with reference to examples.

Example 1 500 g of fresh tea leaves within 5 hours after collection are thoroughly washed with water, placed in a domestic steaming basket and heated, and observed for changes in flavor, flavor, and the like after 90 seconds, 180 seconds, and 360 seconds. did. 90
The one after the lapse of seconds retained the green color of the leaves by 80% or more, and had the best flavor and flavor.

Example 2 500 g of fresh tea leaves used in Example 1 were put in a steaming basket.
Steam at 100 ° C for about 15 minutes. Immediately, the tea leaves were pressed at 500 kg / m ³ with a press machine (MK-1 manufactured by Komagata Machine Works).
For 5 minutes to obtain 50 ml of pressed juice. Subsequently, the squeezed juice is freeze-dried (SF-05H manufactured by Yamato Kagaku).
And freeze-dried to obtain a pressed juice powder. The yield after lyophilization was 3-5%.

Comparative Example 1 Tea leaves 8 hours after collection were obtained in the same manner as in Example 2 to obtain 50 ml of squeezed juice. The yield after lyophilization was the same as in Example 2.

Comparative Examples 2 to 6 Fresh tea leaves used in Example 1 were reduced to 100 mesh with a crusher, and commercially available green tea, red tea, oolongcha and matcha were used. One liter of water was added to each 100 g, and the mixture was heated for about 1 hour. After cooling, the filtrate was freeze-dried, and the extract was stored in a desiccator. The yield of the fresh tea leaf extract (Comparative Example 1) was 2-3%, and that of the other tea leaf extracts (comparative examples 2-6) was 8-12%.

Comparative Example 7 500 g of edible portion of cabbage was put in a steaming basket and steamed at 100 ° C. for about 90 seconds. Immediately, the cabbage was squeezed at 500 kg / m ³ for 5 minutes using a press machine (MK-1 manufactured by Komagata Kikai Seisakusho) to obtain 120 ml of squeezed juice. Subsequently, the squeezed juice is freeze-dried (SF-05H type manufactured by Yamato Scientific Co., Ltd.).
And freeze-dried to obtain a pressed juice powder. The yield after lyophilization was 2-4%.

Evaluation of protective effect on gastric mucosa Evaluation of protective effect on gastric mucosa was performed as follows. Weight 16
0 to 180 g of male Wistar rats were used as a group of 6 rats. The mice that had been fasted for 18 to 20 hours were given 10 to 100 mg / k of various extracts obtained in Example 1 and Comparative Examples 1 to 7.
g is administered orally. Then, 1 hour after administration of the extract, 1.5 ml of 150 mM hydrochloric acid / 60% ethanol solution was orally administered, and after 1 hour, the mice were killed, and the degree of erosion observed in the stomach was indexed. It was used as an indicator of protective action. In addition, as a comparative control agent, setraxate hydrochloride (manufactured by Daiichi Pharmaceutical Co., Ltd.), which is known as a gastric mucosa protective agent, was used. Table 1 shows the results.

[0020]

As described above, the tea leaf pressed powder according to the present invention has an excellent gastric mucosal protective effect and is derived from natural products, so that it can be easily and safely used as a medicine, food or drink. On top of that, with safe and inexpensive manufacturing methods,
Can be provided. Therefore, it can be said that the industrial applicability of the present invention is extremely high.

[Table 1]

Claims (1)

[Claims] 1. After steaming fresh tea leaves in a steaming basket,
A method for producing tea leaf pressed juice powder having a protective effect on gastric mucosa, wherein the juice is obtained by rapidly cooling and compressing the tea leaves with a press machine and drying the obtained juice.