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CN103907844A - Production method of freeze-dried carrot crisp chips - Google Patents

Production method of freeze-dried carrot crisp chips Download PDF

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Publication number
CN103907844A
CN103907844A CN201410113301.5A CN201410113301A CN103907844A CN 103907844 A CN103907844 A CN 103907844A CN 201410113301 A CN201410113301 A CN 201410113301A CN 103907844 A CN103907844 A CN 103907844A
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CN
China
Prior art keywords
freeze
drying
carrot
thin slice
chips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410113301.5A
Other languages
Chinese (zh)
Inventor
马霞
何艳
董炎炎
程朝辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Upper Sea Green Bright Industrial Co Ltd
Shanghai Institute of Technology
Original Assignee
Upper Sea Green Bright Industrial Co Ltd
Shanghai Institute of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Upper Sea Green Bright Industrial Co Ltd, Shanghai Institute of Technology filed Critical Upper Sea Green Bright Industrial Co Ltd
Priority to CN201410113301.5A priority Critical patent/CN103907844A/en
Publication of CN103907844A publication Critical patent/CN103907844A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00Preservation or chemical ripening of fruit or vegetables
    • A23B7/02Dehydrating; Subsequent reconstitution
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L19/00Products from fruits or vegetables; Preparation or treatment thereof
    • A23L19/01Instant products; Powders; Flakes; Granules
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Food Science & Technology (AREA)
  • Nutrition Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Preparation Of Fruits And Vegetables (AREA)
  • Storage Of Fruits Or Vegetables (AREA)

Abstract

The invention discloses a production method of freeze-dried carrot crisp chips. The production method disclosed by the invention comprises the following steps of: firstly, peeling carrots, and slicing carrots into chips; after spreading the sliced carrot chips in a dish, feeding into a hot air drying box, drying by using hot air for 40-60 min while controlling the temperature at 60-90 DEG C, after drying by using hot air, pre-freezing the carrot chips at minus 40 to minus 70 DEG C for 16-20 h, after pre-freezing, putting the carrot chips in a vacuum freeze drying machine, and freeze-drying in vacuum at minus 50 DEG C for 24 h to obtain the freeze-dried carrot crisp chips. According to the production method of the freeze-dried carrot crisp chips disclosed by the invention, because the hot air drying technology and the vacuum freeze drying technology are combined, the drying energy consumption is reduced; the drying efficiency is increased; the produced carrot crisp chips are low in nutrition loss, healthy and environment-friendly; the primary colour and the primary taste of the carrot crisp chips are greatly kept.

Description

A kind of preparation method of freeze-drying carrots chips
Technical field
The invention belongs to technical field of drying, relate in particular to a kind of preparation method of freeze-drying carrots chips.
Background technology
Carrot nutritional is abundant, contain the various trace elements such as zinc, calcium, iron and 8 kinds of essential amino acids and dietary fiber, particularly be rich in β-carrotene, the health of human body is had to very useful health-care effect, carrot and deep processed product thereof are loved by the people, and are the main carrot deep processed products of one of the countries such as current China's export Japan, Southeast Asia and European Union.But the at present normal pressure heated-air drying gained that adopt more, the color of product is dark, nutritive loss is large, and the product quality of many enterprises is difficult to reach export requirement.But carrot after vacuum freeze drying can keep its original local flavor and nutritional labeling preferably, effectively solve the problem that said method exists.But the quality requirement for freeze-drying carrot product is: biologically active is constant, appearance luster is even, form is full, sound construction, dissolution velocity are fast, and residual moisture is low.At present, the problem that domestic carrot product exists in freeze-drying process is: on brightness in storage, red degree and yellow degree, relatively fresh carrot decline is very fast, and color distortion degree is large, affects shelf life and product quality.
Combined drying refers to a kind of composite drying technology that 2 kinds or two or more drying mode carry out stage by stage, its objective is will reduce drying time, reduce energy consumption, improve the quality of products.
Heated-air drying has that energy consumption low (for other drying means), production method are relatively simple, output advantages of higher; But also there are many deficiencies, as large in product shr, color and luster brown stain is serious, reconstitution rate is low, nutrient loss is serious etc.
Freeze drying can change above-mentioned quality defect, can keep to greatest extent the color, smell, taste and shape of food and good rehydration; Its weak point is that operating technology requirement is high, energy consumption large, serialization is produced difficulty, yielded poorly, thereby operating cost is high, has greatly restricted the development of the sector.
In sum, heated-air drying and freeze drying process are combined, find suitable transfer point, make energy consumption cost, guarantee simultaneously carrots chips fresh colour, former flavoursome, organize fresh and crisp, piece shape is complete etc.
Product prepared by this technique is except the radiation effects of self, the enforcement of the freeze-dry process of the research also will drive the whole freeze-drying industrial expansion of China, the difficult problem of fading that solves the dried frozen aquatic products of the whole freeze-drying industrial quarters of puzzlement, the freeze-dry process of setting up, will the competitiveness of enterprise in colleague.
Summary of the invention
One of object of the present invention is to provide a kind of profile, hue preserving good, and nutritional labeling loss is less and can improve the preparation method of the freeze-drying carrots chips of drying efficiency.
Technical scheme of the present invention
A preparation method for freeze-drying carrots chips, specifically comprises the steps:
(1), the fresh carrot cleaning up is peeled, be cut into the thin slice that thickness is 3 ~ 15mm;
(2), the carrot thin slice pure water cleaning of gained afterwards of cutting into slices is put into 80 ~ 100 ℃ of hot water after draining and carry out blanching 3 ~ 8min;
(3), by the balance that tiles of the carrot thin slice after blanching, balance thickness is no more than 25mm, and packs the carrot thin slice that sets dish into drying receptacle;
Described drying receptacle is culture dish, crisper or aluminum pallet;
(4), that the drying receptacle that carrot thin slice is housed is put into hot air drier is dry, dry run control temperature is 60 ~ 90 ℃, the time is 40 ~ 60min;
(5), after heated-air drying finishes, immediately the drying receptacle that carrot thin slice is housed is carried out to pre-freeze, pre-freeze temperature is-40 ~-70 ℃, and the pre-freeze time is 16 ~ 20h;
(6), carrot thin slice good pre-freeze is placed in vacuum freeze drier and is dried, baking temperature is-50 ℃, and be 24h drying time, obtains freeze-drying carrots chips.
After finishing, above-mentioned vacuum freeze drying immediately the freeze-drying carrots chips of gained is encapsulated.
Beneficial effect of the present invention
The preparation method of a kind of freeze-drying carrots chips of the present invention, due to heated-air drying and Vacuum Freezing & Drying Technology are combined, has reduced energy consumption for drying, has improved drying efficiency, and the carrots chips nutritive loss of production is little, health environment-friendly.
Further, the preparation method of a kind of freeze-drying carrots chips of the present invention, prevent Browning Mechanism and the carrots chips characteristic in dehydration process according to carrots chips, adopt in advance blanching processing, blanching pretreatment has effectively prevented enzymatic browning, has greatly retained the original color and taste of carrots chips.
The specific embodiment
To inventing further elaboration, but do not limit the present invention below by specific embodiment.
Embodiment 1
A preparation method for freeze-drying carrots chips, specifically comprises the steps:
(1), the fresh carrot cleaning up is peeled, be cut into the thin slice that thickness is 3mm;
(2), the carrot thin slice pure water cleaning of gained afterwards of cutting into slices is put into 80 ℃ of hot water after draining and carry out blanching 3min;
(3), by the balance that tiles of the carrot thin slice after blanching, balance thickness is no more than 25mm, and packs the carrot thin slice that sets dish into drying receptacle;
Described drying receptacle is culture dish;
(4), that the drying receptacle that carrot thin slice is housed is put into hot air drier is dry, dry run control temperature is 70 ℃, the time is 40min;
(5), after heated-air drying finishes, immediately the drying receptacle that carrot thin slice is housed is carried out to pre-freeze, pre-freeze temperature is-70 ℃, and the pre-freeze time is 16h;
(6), carrot thin slice good pre-freeze is placed in vacuum freeze drier and is dried, baking temperature is-50 ℃, and be 24h drying time, obtains freeze-drying carrots chips, then encapsulation.
Comparative examples 1
A preparation method for freeze-drying carrots chips, specifically comprises the steps:
(1), the fresh carrot cleaning up is peeled, be cut into the thin slice that thickness is 3mm;
(2), the carrot thin slice pure water cleaning of gained afterwards of cutting into slices is put into 80 ℃ of hot water after draining and carry out blanching 3min;
(3), by the balance that tiles of the carrot thin slice after blanching, balance thickness is no more than 25mm, and packs the carrot thin slice that sets dish into drying receptacle;
Described drying receptacle is culture dish;
(4), the drying receptacle that carrot thin slice is housed is carried out to pre-freeze, pre-freeze temperature is-60 ℃, and the pre-freeze time is 18h;
(5), carrot thin slice good pre-freeze is placed in vacuum freeze drier and is dried, baking temperature is-50 ℃, and be 24h drying time, obtains freeze-drying carrots chips, then encapsulation.
Adopting GB/T7921-2008 uniform colour space and colour difference formula computational methods to carry out colourity to embodiment 1 with the freeze-drying carrots chips of comparative examples 1 gained relatively finds, it is 113.7 that comparative examples 1 adopts freeze-drying carrots chips aberration compared with fresh carrot of gained under vacuum freeze drying separately, and freeze-drying carrots chips aberration compared with fresh carrot of the gained that in embodiment 1, heated-air drying and Vacuum Freezing & Drying Technology combined is 44.92, can draw and of the present invention heated-air drying and Vacuum Freezing & Drying Technology be combined, reduce energy consumption for drying, improve drying efficiency, the freeze-drying carrots chips nutritive loss of producing is little, health environment-friendly.
Embodiment 2
A preparation method for freeze-drying carrots chips, specifically comprises the steps:
(1), the fresh carrot cleaning up is peeled, be cut into the thin slice that thickness is 15mm;
(2), the carrot thin slice pure water cleaning of gained afterwards of cutting into slices is put into 100 ℃ of hot water after draining and carry out blanching 8min;
(3), by the balance that tiles of the carrot thin slice after blanching, balance thickness is no more than 25mm, and packs the carrot thin slice that sets dish into drying receptacle;
Described drying receptacle is crisper;
(4), that the drying receptacle that carrot thin slice is housed is put into hot air drier is dry, dry run control temperature is 90 ℃, the time is 60min;
(5), after heated-air drying finishes, immediately the drying receptacle that carrot thin slice is housed is carried out to pre-freeze, pre-freeze temperature is-70 ℃, and the pre-freeze time is 20h;
(6), carrot thin slice good pre-freeze is placed in vacuum freeze drier and is dried, baking temperature is-50 ℃, and be 24h drying time, obtains freeze-drying carrots chips, then encapsulation.
Embodiment 3
A preparation method for freeze-drying carrots chips, specifically comprises the steps:
(1), the fresh carrot cleaning up is peeled, be cut into the thin slice that thickness is 6mm;
(2), the carrot thin slice pure water cleaning of gained afterwards of cutting into slices is put into 90 ℃ of hot water after draining and carry out blanching 8min;
(3), by the balance that tiles of the carrot thin slice after blanching, balance thickness is no more than 25mm, and packs the carrot thin slice that sets dish into drying receptacle;
Described drying receptacle is aluminum pallet;
(4), that the drying receptacle that carrot thin slice is housed is put into hot air drier is dry, dry run control temperature is 80 ℃, the time is 50min;
(5), after heated-air drying finishes, immediately the drying receptacle that carrot thin slice is housed is carried out to pre-freeze, pre-freeze temperature is--50 ℃, the pre-freeze time is 18h;
(6), carrot thin slice good pre-freeze is placed in vacuum freeze drier and is dried, baking temperature is-50 ℃, and be 24h drying time, obtains freeze-drying carrots chips, then encapsulation.
Embodiment 4
A preparation method for freeze-drying carrots chips, specifically comprises the steps:
(1), the fresh carrot cleaning up is peeled, be cut into the thin slice that thickness is 13mm;
(2), the carrot thin slice pure water cleaning of gained afterwards of cutting into slices is put into 100 ℃ of hot water after draining and carry out blanching 7min;
(3), by the balance that tiles of the carrot thin slice after blanching, balance thickness is no more than 25mm, and packs the carrot thin slice that sets dish into drying receptacle;
Described drying receptacle is culture dish;
(4), that the drying receptacle that carrot thin slice is housed is put into hot air drier is dry, dry run control temperature is 75 ℃, the time is 55min;
(5), after heated-air drying finishes, immediately the drying receptacle that carrot thin slice is housed is carried out to pre-freeze, pre-freeze temperature is-60 ℃, and the pre-freeze time is 20h;
(6), carrot thin slice good pre-freeze is placed in vacuum freeze drier and is dried, baking temperature is-50 ℃, and be 24h drying time, obtains freeze-drying carrots chips, then encapsulation.
Embodiment 5
A preparation method for freeze-drying carrots chips, specifically comprises the steps:
(1), the fresh carrot cleaning up is peeled, be cut into the thin slice that thickness is 10mm;
(2), the carrot thin slice pure water cleaning of gained afterwards of cutting into slices is put into 80 ℃ of hot water after draining and carry out blanching 5min;
(3), by the balance that tiles of the carrot thin slice after blanching, balance thickness is no more than 25mm, and packs the carrot thin slice that sets dish into drying receptacle;
Described drying receptacle is crisper;
(4), that the drying receptacle that carrot thin slice is housed is put into hot air drier is dry, Drying Technology Parameter is: be 45min drying time, baking temperature is 60 ℃;
(5), after heated-air drying finishes, immediately the drying receptacle that carrot thin slice is housed is carried out to pre-freeze, pre-freeze temperature is-70 ℃, and the pre-freeze time is 16h;
(6), carrot thin slice good pre-freeze is placed in vacuum freeze drier and is dried, baking temperature is-50 ℃, and be 24h drying time, obtains freeze-drying carrots chips, then encapsulation.
Above embodiment is only not used in and limits the scope of the invention for the present invention is described.In addition, after having read the content of the present invention's instruction, those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally.

Claims (2)

1. a preparation method for freeze-drying carrots chips, is characterized in that first carrot being peeled and thinly slicing;
Then after the carrot thin slice of gained after section being drained with pure water cleaning, put into 80 ~ 100 ℃ of hot water and carry out blanching 3 ~ 8min;
Carrot thin slice after blanching is tiled after balance and sent in hot air drier, and controlling temperature is 60 ~ 90 ℃, carries out heated-air drying 40 ~ 60min;
After heated-air drying finishes, carrot thin slice is carried out to pre-freeze, pre-freeze process control temp is-40 ~-70 ℃, and the time is 16 ~ 20h;
Pre-freeze is put into vacuum freeze drier by carrot thin slice after finishing and is controlled temperature and carry out vacuum freeze drying 24h for-50 ℃, obtains freeze-drying carrots chips.
2. the preparation method of freeze-drying carrots chips as claimed in claim 1, is characterized in that specifically comprising the steps:
(1), the fresh carrot cleaning up is peeled, be cut into the thin slice that thickness is 3 ~ 15mm;
(2), the carrot thin slice pure water cleaning of gained afterwards of cutting into slices is put into 80 ~ 100 ℃ of hot water after draining and carry out blanching 3 ~ 8min;
(3), by the balance that tiles of the carrot thin slice after blanching, balance thickness is no more than 25mm, and packs the carrot thin slice that sets dish into drying receptacle;
Described drying receptacle is culture dish, crisper or aluminum pallet;
(4), that the drying receptacle that carrot thin slice is housed is put into hot air drier is dry, dry run control temperature is 60 ~ 90 ℃, the time is 40 ~ 60min;
(5), after heated-air drying finishes, immediately the drying receptacle that carrot thin slice is housed is carried out to pre-freeze, pre-freeze temperature is-40 ~-70 ℃, and the pre-freeze time is 16 ~ 20h;
(6), carrot thin slice good pre-freeze is placed in vacuum freeze drier and is dried, baking temperature is-50 ℃, and be 24h drying time, obtains freeze-drying carrots chips.
CN201410113301.5A 2014-03-26 2014-03-26 Production method of freeze-dried carrot crisp chips Pending CN103907844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104522558A (en) * 2014-12-18 2015-04-22 中国农业科学院农产品加工研究所 Processing method of crispy carrot strips
CN105211780A (en) * 2015-10-13 2016-01-06 杨明彰 The processing method of dried carrot
BE1022972B1 (en) * 2014-12-08 2016-10-25 Jiangnan University Production process for fiber-rich recombined asparagus chips
CN106616584A (en) * 2016-10-12 2017-05-10 内蒙古天奇生物科技有限公司 Drying method of carrot powder
CN106666542A (en) * 2017-02-20 2017-05-17 淮阳县万源蒜业食品有限公司 Method for preparing dry and crisp shredded onion through low-temperature vacuum oil bath technology
CN107897774A (en) * 2017-09-19 2018-04-13 蚌埠市众星蔬果科技专业合作社联合社 The preparation method that a kind of nutrition pears are done
CN111329015A (en) * 2020-03-11 2020-06-26 张掖市晨绿农工贸有限责任公司 Processing method of dehydrated carrots
CN112869072A (en) * 2021-02-24 2021-06-01 上海应用技术大学 Freeze-dried flaky dried citrus gonggan and preparation method thereof
CN114017998A (en) * 2022-01-06 2022-02-08 如皋市通达机械制造有限公司 Continuous powder dryer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554292A (en) * 2003-12-22 2004-12-15 浙江海通食品集团股份有限公司 Method for processing leisure seasoning dewatered fruit and vegetable

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554292A (en) * 2003-12-22 2004-12-15 浙江海通食品集团股份有限公司 Method for processing leisure seasoning dewatered fruit and vegetable

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1022972B1 (en) * 2014-12-08 2016-10-25 Jiangnan University Production process for fiber-rich recombined asparagus chips
CN104522558A (en) * 2014-12-18 2015-04-22 中国农业科学院农产品加工研究所 Processing method of crispy carrot strips
CN105211780A (en) * 2015-10-13 2016-01-06 杨明彰 The processing method of dried carrot
CN105211780B (en) * 2015-10-13 2018-11-30 杨明彰 The processing method of dried carrot
CN106616584A (en) * 2016-10-12 2017-05-10 内蒙古天奇生物科技有限公司 Drying method of carrot powder
CN106666542A (en) * 2017-02-20 2017-05-17 淮阳县万源蒜业食品有限公司 Method for preparing dry and crisp shredded onion through low-temperature vacuum oil bath technology
CN106666542B (en) * 2017-02-20 2020-09-22 淮阳县万源蒜业食品有限公司 Method for preparing crisp onion shreds by using low-temperature vacuum oil bath technology
CN107897774A (en) * 2017-09-19 2018-04-13 蚌埠市众星蔬果科技专业合作社联合社 The preparation method that a kind of nutrition pears are done
CN111329015A (en) * 2020-03-11 2020-06-26 张掖市晨绿农工贸有限责任公司 Processing method of dehydrated carrots
CN112869072A (en) * 2021-02-24 2021-06-01 上海应用技术大学 Freeze-dried flaky dried citrus gonggan and preparation method thereof
CN114017998A (en) * 2022-01-06 2022-02-08 如皋市通达机械制造有限公司 Continuous powder dryer

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Application publication date: 20140709