CN108719878A - A kind of vacuum freezing-drying preparation method thereof of citrus piece - Google Patents

A kind of vacuum freezing-drying preparation method thereof of citrus piece Download PDF

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Publication number
CN108719878A
CN108719878A CN201810608451.1A CN201810608451A CN108719878A CN 108719878 A CN108719878 A CN 108719878A CN 201810608451 A CN201810608451 A CN 201810608451A CN 108719878 A CN108719878 A CN 108719878A
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CN
China
Prior art keywords
citrus
freeze
piece
drying
citrus piece
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Pending
Application number
CN201810608451.1A
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Chinese (zh)
Inventor
张玉
宁晓强
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Southwest University
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Southwest University
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Publication date
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Priority to CN201810608451.1A priority Critical patent/CN108719878A/en
Publication of CN108719878A publication Critical patent/CN108719878A/en
Pending legal-status Critical Current

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    • 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
    • A23L19/03Products from fruits or vegetables; Preparation or treatment thereof consisting of whole pieces or fragments without mashing the original pieces
    • 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
    • A23B7/024Freeze-drying, i.e. cryodessication or lyophilisation
    • 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 kind of vacuum freezing-drying preparation method thereofs of citrus piece, by selecting, being sliced, pre-freeze and freeze-drying step prepare it is a kind of not only can soaked edible but also direct-edible dehydration citrus piece, the citrus piece nutritive value height of preparation, appearance are beautiful, rehydration is good, be it is a kind of not only can soaked edible but also direct-edible dehydration citrus piece;Preparation method is simple simultaneously, adapts to the requirement of large-scale production citrus piece.

Description

A kind of vacuum freezing-drying preparation method thereof of citrus piece
Technical field
The invention belongs to food field of deep, and in particular to a kind of vacuum freezing-drying preparation method thereof of citrus piece.
Background technology
Citrus is wide in China's cultivated area, fruit delicious flavour, and nutritive value is high, and development Citrus Industry is for Chinese mandarin orange The development of the infiltration and development of the industrial chain of tangerine class fruit, the stabilization and rural economy of China's structure of agricultural production is of great significance. Dehydration and drying is that common garden stuff processing mode extends fruits and vegetables storage life by reducing the moisture in fruits and vegetables.The dry tool of fruits and vegetables Have the advantages that the physics for being convenient for storage, transport, sale, but fruits and vegetables to occur in the drying process, chemical reaction can influence fruits and vegetables and do Final quality.
Traditional heated-air drying is earliest as the application of fruit and vegetable dryness mode, at low cost, but often occur product brown stain it is serious, The problems such as nutritive value reduces.Vacuum freeze drying is that material is frozen into eutectic point hereinafter, under certain vacuum degree, keeps ice straight Distillation is connect to a kind of dewatered drying means.Vacuum freeze drying carries out under low temperature, vacuum condition, can be to greatest extent Holding raw material color and luster, shape, flavor and nutritional ingredient.
At present to the drying of citrus piece mostly with heated-air drying for main drying mode, but heated-air drying citrus piece organoleptic quality It is poor, the public acceptance to citrus piece is affected, therefore by studying the preparation method of citrus piece so as to improve citrus piece Color and luster, shape, flavor and nutritional ingredient have good market prospects.
Invention content
In view of this, the purpose of the present invention is to provide a kind of vacuum freezing-drying preparation method thereofs of citrus piece.
For achieving the above object, the present invention provides the following technical solutions:
1, a kind of vacuum freezing-drying preparation method thereof of citrus piece, includes the following steps:
(1) it selects:Full maturity, color, citrus of the same size are selected, is cleaned spare;
(2) it is sliced:By the clean crosscutting flakiness of citrus;
(3) pre-freeze:Citrus thin slice pre-freeze is taken out after 6~12 hours;
(4) it is freeze-dried:The good citrus piece of pre-freeze is equably layered in lyophilized plate, vacuum freeze drier drying is put into It can arrive within 50~70 hours to citrus piece.
Preferably, the citrus is brocade orange.
Preferably, the thickness of the thin slice is 1cm.
Preferably, the temperature of the pre-freeze is -40 DEG C~-18 DEG C.
Preferably, pressure when described dry is 50~80Pa.
Preferably, condenser temperature when described dry is -60 DEG C~-50 DEG C.
The beneficial effects of the present invention are:The purpose of the present invention is to provide a kind of preparations of the vacuum freeze drying of citrus piece Method, the citrus piece nutritive value height of preparation, appearance are beautiful, and rehydration is good, are that one kind not only can be soaked edible but also direct-edible Dehydration citrus piece, preparation method is simple, adapt to large-scale production citrus piece requirement.
Description of the drawings
In order to keep the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides following attached drawing:
Fig. 1 is citrus piece figure prepared by different dry methods.
Fig. 2 is that the Vc of citrus piece prepared by distinct methods contains spirogram.
Fig. 3 is the total acid content figure of citrus piece prepared by distinct methods.
Fig. 4 is the total sugar content figure of citrus piece prepared by distinct methods.
Fig. 5 is the rehydration of citrus piece prepared by distinct methods than figure.
Specific implementation mode
The preferred embodiment of the present invention will be described in detail below.The experiment of actual conditions is not specified in embodiment Method, usually according to conventional conditions or according to the manufacturer's recommendations.
Embodiment 1
Color, ripe brocade orange of the same size are selected, cleans, dry the rear crosscutting thin slice at 1cm, pre-freeze at -18 DEG C 12h, evenly laid out in lyophilized plate, the pressure of vacuum freeze drier is set as 80Pa, and -50 DEG C of condenser temperature, dry 60 is small When after take out.
Embodiment 2
Select color, mature orange of the same size, clean, dry it is rear it is crosscutting at thin slice, pre-freeze 8h at -20 DEG C, Even to be laid in lyophilized plate, the pressure of vacuum freeze drier is set as 50Pa, and -55 DEG C of condenser temperature takes after 70 hours dry Go out.
Embodiment 3
Color, mature orange of the same size are selected, cleans, dry rear crosscutting flakiness, pre-freeze 6h at -40 DEG C, uniformly It is laid in lyophilized plate, the pressure of vacuum freeze drier is set as 60Pa, and -60 DEG C of condenser temperature takes out after 50 hours dry. Comparative example 1-3
Color, ripe brocade orange of the same size are selected, cleans, dry the rear crosscutting thin slice at 1cm, pre-freeze at -18 DEG C 12h, it is evenly laid out in lyophilized plate, 50 DEG C of dryings (comparative example 1) of hot wind are respectively adopted, 70 DEG C of dryings of hot wind are respectively adopted (comparative example 2) is respectively adopted 90 DEG C of dryings (comparative example 3) of hot wind, is taken out after 50 hours dry.
It is as shown in Figure 1 to cross the citrus piece that freeze-drying and hot-air seasoning are prepared, it can be seen that freeze-drying The citrus piece appearance luster being prepared is more preferable.
The citrus piece that embodiment 1 is prepared carries out Vc contents, the measurement of total acid content and total sugar content, while right Than the citrus piece being prepared with hot-air seasoning in embodiment 1-3, the results are shown in Figure 2 for comparative determination, it can be seen that passes through The Vc contents for the citrus piece that the preparation method of the present invention is prepared are higher, and the comparative determination result of same total acid content is as schemed Shown in 3, the results are shown in Figure 4 for the measurement of comparison of total sugar content, it can be seen that freeze-drying through the invention compares hot air drying The dry citrus piece that is prepared has higher nutritive value.
The citrus piece that the citrus piece that embodiment 1 is prepared is prepared with heated-air drying in comparative example 1-3 into Row rehydration is tested, and obtained rehydration ratio is said as shown in figure 5, the rehydration of the citrus piece of freeze-drying of the present invention preparation is bigger The preparation method of the bright present invention can make citrus piece dehydration and drying more thorough.
Different preparation methods can equally influence the appearance luster of citrus piece, test to obtain through the invention by color difference meter The relevant parameter of freeze-drying and the citrus piece that hot-air seasoning in comparative example 1-3 is prepared is as shown in table 1, passes through Compare it can be seen that preparation method of the present invention can prepare the better citrus piece of appearance luster.
Influence (x ± s, n=9) of the different drying modes of table 1 to color and luster
Table 2 shows the texture data of citrus piece prepared by different drying means, and analytical data is bright, originally passes through freeze-drying The extent of the destruction smaller of citrus piece texture prepared by method, short texture, and through the mandarin orange of heated-air drying (50 DEG C, 70 DEG C, 90 DEG C) Tangerine chip architecture is close, and exactly this structure influences the hard of sample, chewiness etc., reduces the organoleptic quality of brocade orange piece.
The texture data (x ± s, n=9) of citrus piece prepared by the different drying means of table 2
For food, sensory evaluation largely influences it and promotes and apply, different drying means systems Standby citrus piece also has bigger difference in the performance of appearance, taste flavor etc., and specific manifestation is as shown in table 3, from sense organ pair Citrus piece color and luster than freeze-drying making known to analysis result is orange, surfacing, almost pucker-free, crispy in taste, firmly Spend it is moderate, and have strong citrus flavors.
The sense organ evaluating meter (x ± s, n=10) of citrus piece prepared by the different drying means of table 3
In summary the V for citrus piece distinct methods being preparedC, total acid, total reducing sugar, texture, aberration and sense organ refer to Mark is analyzed it is found that the citrus piece being prepared by freeze-drying method is in nutritional ingredient, institutional framework and sense organ etc. It has a clear superiority, the citrus chip architecture for being embodied in vacuum freeze-drying method preparation is loose, and rehydration and sensory evaluation are good, battalion A point height is formed, the color and luster and internal structure extent of the destruction to citrus piece are small, not only can be soaked edible but also direct-edible;Preparation method It is easy to operate, it is suitble to industrialized production, there is good commercial application prospect.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be Various changes are made to it in form and in details, without departing from claims of the present invention limited range.

Claims (6)

1. a kind of vacuum freezing-drying preparation method thereof of citrus piece, which is characterized in that described method includes following steps:
(1) it selects:Full maturity, color, citrus of the same size are selected, is cleaned spare;
(2) it is sliced:By the clean crosscutting flakiness of citrus;
(3) pre-freeze:Citrus thin slice pre-freeze is taken out after 6~12 hours;
(4) it is freeze-dried:The good citrus piece of pre-freeze is equably layered in lyophilized plate, be put into vacuum freeze drier drying 50~ It can be obtained citrus piece within 70 hours.
2. a kind of vacuum freezing-drying preparation method thereof of citrus piece according to claim 1, which is characterized in that the citrus For brocade orange.
3. a kind of vacuum freezing-drying preparation method thereof of citrus piece according to claim 1, which is characterized in that step (2) Described in thin slice thickness be 1cm.
4. a kind of vacuum freezing-drying preparation method thereof of citrus piece according to claim 1, which is characterized in that step (3) Described in pre-freeze temperature be -40 DEG C~-18 DEG C.
5. a kind of vacuum freezing-drying preparation method thereof of citrus piece according to claim 1, which is characterized in that step (4) Described in it is dry when pressure be 50~80Pa.
6. a kind of vacuum freezing-drying preparation method thereof of citrus piece according to claim 1, which is characterized in that step (4) Described in it is dry when condenser temperature be -60 DEG C~-50 DEG C.
CN201810608451.1A 2018-06-13 2018-06-13 A kind of vacuum freezing-drying preparation method thereof of citrus piece Pending CN108719878A (en)

Priority Applications (1)

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CN201810608451.1A CN108719878A (en) 2018-06-13 2018-06-13 A kind of vacuum freezing-drying preparation method thereof of citrus piece

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111034961A (en) * 2020-01-07 2020-04-21 深圳市清生元生物技术股份有限公司 Vacuum freeze-drying preparation method of guava instant tablets
CN112401232A (en) * 2020-11-24 2021-02-26 西南大学 Preparation method and application of Tibetan mushroom fermented plant enzyme
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006101763A (en) * 2004-10-05 2006-04-20 Pokka Corp Method for producing dried slice of citrus fruit
CN105192234A (en) * 2015-10-16 2015-12-30 四川大学 Instant orange slices and preparation method thereof
CN105685881A (en) * 2016-03-03 2016-06-22 湖南省农产品加工研究所 Lime slices and preparation method thereof
CN106643006A (en) * 2016-12-21 2017-05-10 吴青业 Freezing and drying preparation method and application of pomelo fruits

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006101763A (en) * 2004-10-05 2006-04-20 Pokka Corp Method for producing dried slice of citrus fruit
CN105192234A (en) * 2015-10-16 2015-12-30 四川大学 Instant orange slices and preparation method thereof
CN105685881A (en) * 2016-03-03 2016-06-22 湖南省农产品加工研究所 Lime slices and preparation method thereof
CN106643006A (en) * 2016-12-21 2017-05-10 吴青业 Freezing and drying preparation method and application of pomelo fruits

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
谢振文,等: "真空冷冻干燥柠檬片工艺参数优化研究 ", 《食品与发酵科技》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111034961A (en) * 2020-01-07 2020-04-21 深圳市清生元生物技术股份有限公司 Vacuum freeze-drying preparation method of guava instant tablets
CN112401232A (en) * 2020-11-24 2021-02-26 西南大学 Preparation method and application of Tibetan mushroom fermented plant enzyme
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

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Application publication date: 20181102

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