CN110122556A - A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail - Google Patents
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail Download PDFInfo
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- CN110122556A CN110122556A CN201910460649.4A CN201910460649A CN110122556A CN 110122556 A CN110122556 A CN 110122556A CN 201910460649 A CN201910460649 A CN 201910460649A CN 110122556 A CN110122556 A CN 110122556A
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- fresh
- common cattail
- cut
- cattail
- cut common
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- 235000005324 Typha latifolia Nutrition 0.000 title claims abstract description 110
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- 238000004321 preservation Methods 0.000 title claims abstract description 37
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- 238000000576 coating method Methods 0.000 claims abstract description 18
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- 238000005138 cryopreservation Methods 0.000 claims abstract description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 42
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 20
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- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical class OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
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- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
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- 229930182817 methionine Natural products 0.000 description 1
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical class COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 210000003463 organelle Anatomy 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000009928 pasteurization Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
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- 230000036387 respiratory rate Effects 0.000 description 1
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- 238000004904 shortening Methods 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
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- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/04—Freezing; Subsequent thawing; Cooling
- A23B7/05—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals other than cryogenics, before or during cooling, e.g. in the form of an ice coating or frozen block
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/157—Inorganic compounds
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/16—Coating with a protective layer; Compositions or apparatus therefor
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Storage Of Fruits Or Vegetables (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Delay the ageing preservation method for rotting, extending storage time of fresh-cut common cattail the invention discloses a kind of, the preservation method the following steps are included: choosing fresh common cattail, clean by arrangement, dissection；Fresh-cut common cattail is immersed in ClO 2 solution and is impregnated, is dehydrated；Common cattail is immersed in coating liquid again and is impregnated, is dehydrated；Finally with preservative film package, sealing, cryopreservation；The present invention by fresh-cut common cattail be put into ClO 2 solution in impregnate, so that the activity of phenylalanine lyase, polyphenol oxidase etc. is inhibited, kill common cattail surface microorganism, be not susceptible to rot；The film on common cattail, makes common cattail and air insulated, reduces the generation that common cattail is oxidized and rots, the experimental results showed that, the generation that fresh-keeping effect is more preferable, and fresh-cut common cattail has effectively been delayed to be oxidized and rot is carried out to fresh-cut common cattail using preservation method of the invention.
Description
Technical field
The present invention relates to fruits and vegetable stock and preserving freshness field, the fresh-keeping side of specifically a kind of antibacterial film low temperature of fresh-cut common cattail
Method.
Background technique
Common cattail nickname typha latifolial, cattail, the stem or leaf of cattail, Pu root, careless bud, ivory dish, belong to Typhaceae typha, are Jiangsu
The distinctive traditional famous dish in province Huai'an.Common cattail is mainly grown in marsh and freshwater lake, with the false stem internal layer of its leaf sheath obvolvent
Or the young tender stem branch that underground is crawled is edible as vegetables, it is not only full of nutrition, and there is certain medical value.In common cattail tender stem
Containing nutriments such as protein, fat, carbon aquation inclusion, dietary fiber, calcium and phosphorus, there are also multivitamins and amino acid.
Modern study shows that common cattail also has certain medical value, and nature and flavor are cold and cool, with refreshing and detoxicating, Li Shui, detumescence function
Effect.Currently, the domestic research in relation to common cattail preservation and freshness being it has been reported that have coating-film fresh-keeping, controlled atmosphere, add antistaling agent etc.,
But all because the problems such as technique, cost is difficult to popularize.After series of preprocessing, tissue is damaged fresh fruit of vegetables by machinery
Wound, eucaryotic cell structure are destroyed, and a large amount of generations of ethylene in fruits and vegetables tissue are caused, and tissue own metabolism enhances, and cellular respiration is strong
Degree improves；Fresh fruit of vegetables is in working process and storage, since cutting causes mechanical damage and keeps fruits and vegetables juice directly sudden and violent
It is exposed in air, not only results in part nutrient loss (such as moisture and some vitamin), but also promote fruits and vegetables tissue
Respiratory rate improves, and own metabolism is accelerated, and has further speeded up the loss of nutriment；Fruits and vegetables are after fresh-cut is handled, epidermis pair
The protective effect of tissue disappears, and causes tissue and external microbe contact area to increase, reduces fruits and vegetables to the nature of microorganism
Resistance, while cell damage causes a large amount of juice to outflow, and nutritional condition is provided for the breeding of microorganism, so fresh-cut fruit
In vegetable storage, infecting for microorganism becomes one of the principal element for limiting its storage shelf life.Micro- life in fresh-cut fruit and vegetable
Object is from two aspects: first is that remaining in the microorganism on fresh fruit of vegetables after cleaning；Second is that in fresh cut products and storage
Microbial infection caused by as the even cross-infection of sample room of operated implement, storage environment.Above-mentioned reaction can be very big
The shelf life of the shortening fresh cut vegetables of degree, therefore how to reduce adverse reaction and influenced caused by fresh cut vegetables, extend fresh-cut
The shelf life of vegetables is just at the key of fresh cut vegetables processing technology.
Domestic and international scientific research personnel has carried out a large amount of research to this, and proposes various storage techniques, generally can be with
It is divided into physics, chemistry and biological method.Physical method mainly includes cryopreservation, heat treatment, controlled atmosphere, cold sterilization etc..Change
Method includes that Edible coatings are fresh-keeping, natural extract is fresh-keeping.Biological way of keeping fresh is a kind of natural, nontoxic fresh-keeping side
Method inhibits harmful microorganism mainly using microbial cells and its metabolite, biological natural extract and genetic technology
Growth slows down ethylene synthase and respiration rate, reduces postharvest fruit and vegetable and rots to lose, to achieve the purpose that preservation and freshness, applies
Prospect is very wide.The holding of fresh-cut fruit and vegetable quality is established in screening, the production and processing a to systems such as the storing of product from raw material
During column on various processing technique bases.Experiment show the physics that will be noted above, chemistry, biological fresh-keeping method into
The synthetical preservation technology of row reasonable combination can substantially improve the quality of fresh-cut fruit and vegetable, extend its shelf life.
Summary of the invention
The purpose of the present invention is to provide a kind of preservation methods of the antibacterial film low temperature of fresh-cut common cattail, to solve the prior art
The problems in.
To achieve the above object, the invention provides the following technical scheme:
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) fresh common cattail is chosen, is arranged, dissection, cleaning；
(2) the resulting fresh-cut common cattail of step (1) is immersed in ClO 2 solution and impregnates, drain；
(3) the resulting fresh-cut common cattail of step (2) is immersed in coating liquid and impregnates, drain；
(4) the resulting fresh-cut common cattail of step (3) is sealed with preservative film, cryopreservation.
As optimization, a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) it chooses without corruption, the fresh common cattail that goes mouldy or sprout, arranges, dissection is put into clear water, washes away soil and miscellaneous
Matter；
(2) by the resulting fresh-cut common cattail of step (1) immerse rapidly in 90~130ppm ClO 2 solution impregnate 15~
35min, centrifuge are dehydrated 6~9min；
Chlorine dioxide is a kind of strong oxidizer, has very strong bactericidal effect, and reaction equation in water is as follows: ClO2+H2O
→3[O]+2H++Cl-Nascent oxygen has very strong oxidability, has preferable absorption and permeance property to microorganism wall,
Effectively the enzyme of sulfydryl (- SH) can be included by oxidative cell, to quickly inhibit the synthesis of intracellular protein, made in protein
Amino-acid oxidase decomposes, and amino acid chain is caused to be broken, and protein loses vigor, and keeps microorganism dead.To the killing effect of virus
It is also in this way, chlorine dioxide promptly can play destruction to the tyrosine in protein on viral capsid, to inhibit disease
The specific adsorption of poison, prevents the infection to host cell.In numerous amino acid, certain amino acid are easy to by dioxy
Change chlorine to be aoxidized, most typically aromatic amino acid and sulfur-containing amino acid, respond is strongest be tyrosine, tryptophan,
Cysteine, methionine.This feature makes chlorine dioxide be often applied to every field as fungicide.
(3) the resulting fresh-cut common cattail of step (2) is immersed and impregnates 20~40min in coating liquid, centrifuge dehydration 6~
9min, coating liquid include following components in percentage by weight: chitosan 0.06~0.14%, citric acid 0.8~1.2%, hydrogen-oxygen
Change sodium 0.05~0.13%, methyl p-hydroxybenzoate 0.01~0.05%, cinnamic acid 0.02~0.06%, remaining is water；
Chitosan is dissolved in citric acid solution, and sodium hydroxide solution is added dropwise and is neutralized with citric acid solution, then again
Methyl p-hydroxybenzoate, cinnamic acid is added, is uniformly mixed, obtains coating liquid, coating liquid is coated in fresh-cut common cattail appearance, it can
Fresh-cut common cattail is separated with air, reduces a possibility that fresh-cut common cattail is oxidized, reduces the rotten generation of fresh-cut common cattail, due to
Chitosan has bacteriostasis, fresh-cut common cattail can be prevented putrid and deteriorated because of bacteria breed, while methyl hydroxybenzoate, meat
Cinnamic aldehyde also has antibacterial action, and chitosan and methyl hydroxybenzoate, cinnamic acid act synergistically, and plays the function of multiple sterilization
Effect extends storage time；
(4) step (3) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, it is described fresh-keeping
Film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/
(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
As optimization, ClO 2 solution concentration is 110ppm.
As optimization, coating liquid includes following components in percentage by weight: chitosan 0.10%, citric acid 1.0%, hydrogen-oxygen
Change sodium 0.09%, methyl p-hydroxybenzoate 0.03%, cinnamic acid 0.04%, remaining is water.
As optimization, preservative film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), dioxy
Change carbon transmitance 69817cm3/(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
Compared with prior art, the beneficial effects of the present invention are:
First is that a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail of the present invention, (a) chlorine dioxide can be killed effectively
A variety of pathogens inhibit fruits and vegetables corruption；(b) chlorine dioxide antiseptic does not generate harmful substance, safety non-pollution；(c) chlorine dioxide
Methionine can be prevented to generate ethylene, generated ethylene is destroyed, delay fruits and vegetables aging.
Second is that a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail of the present invention, methyl p-hydroxybenzoate are called Buddhist nun
Moor tortoise beetle ester, as organic synthesis, food, cosmetics, medicine sterilization antiseptic.Anticorrosion mechanism is to destroy microbial cell
Film is denaturalized intracellular protein, and inhibits the respiratory enzyme of microbial cell and the activity of electron transmission enzyme system.Paraben esters
The bacteriostatic activity of (sodium) is mainly that molecular state works, and since the hydroxyl of its intramolecular has been esterified, is no longer ionized, so it
Antibacterial action has good effect in the range of pH3~8；Cinnamic acid is a kind of aldehydes organic compound, is that yellow is sticky
Shape liquid is largely present in the plants such as cortex cinnamomi.Sterilizing anti-corrosion, especially has significant curative effect to fungi.It is mainly logical
Destruction fungal cell wall is crossed, penetrates into drug in fungal cell, organelle is destroyed and plays bactericidal effect.Because cinnamic acid unlike
The application of sodium benzoate is influenced by pH value, and for acid or alkalinity substance, it all has stronger disinfection function,
It is fresh-keeping to be but also widely used for anticorrosive mildewproof.
Third is that a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail of the present invention, chitosan are dissolved in citric acid solution
In, sodium hydroxide solution is added dropwise and is neutralized with citric acid solution, other bacteriostatic agents and preservative are then added, mixing is equal
It is even, coating liquid is obtained, coating liquid is coated in fresh-cut common cattail appearance, fresh-cut common cattail can be separated with air, reduce fresh-cut Pu
A possibility that dish is oxidized reduces the rotten generation of fresh-cut common cattail, since chitosan has bacteriostasis, can prevent fresh-cut Pu
Dish is putrid and deteriorated because of bacteria breed, while methyl p-hydroxybenzoate, cinnamic acid also have an antibacterial action, chitosan with to hydroxyl
The effect of yl benzoic acid methyl esters, cinnamic acid act synergistically, play re-pasteurization, extends storage time.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1:
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) the fresh common cattail without corruption, mildew or jaundice is chosen, is arranged, dissection is put into clear water, washes away soil and miscellaneous
Matter；
(2) the resulting fresh-cut common cattail of step (1) is immersed rapidly in 90ppm ClO 2 solution and impregnates 15min, centrifuge
It is dehydrated 6~9min；
(3) the resulting fresh-cut common cattail of step (2) is immersed in film mixed liquor and impregnates 20min, centrifuge dehydration 6~
9min, coating liquid include following components in percentage by weight: chitosan 0.06%, citric acid 0.8%, sodium hydroxide 0.05%,
Methyl p-hydroxybenzoate 0.01%, cinnamic acid 0.02%, remaining is water；
(4) step (3) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, it is described fresh-keeping
Film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/
(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
Embodiment 2:
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) the fresh common cattail without corruption, mildew or jaundice is chosen, is arranged, dissection is put into clear water, washes away soil and miscellaneous
Matter；
(2) the resulting fresh-cut common cattail of step (1) is immersed rapidly in 100ppm ClO 2 solution and impregnates 20min, be centrifuged
Machine is dehydrated 6~9min；
(3) the resulting fresh-cut common cattail of step (2) is immersed in film mixed liquor and impregnates 25min, centrifuge dehydration 6~
9min, coating liquid include following components in percentage by weight: chitosan 0.08%, citric acid 0.9%, sodium hydroxide 0.07%,
Methyl p-hydroxybenzoate 0.02%, cinnamic acid 0.03%, remaining is water；
(4) step (3) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, it is described fresh-keeping
Film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/
(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
Embodiment 3:
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) the fresh common cattail without corruption, mildew or jaundice is chosen, is arranged, dissection is put into clear water, washes away soil and miscellaneous
Matter；
(2) the resulting fresh-cut common cattail of step (1) is immersed rapidly in 110ppm ClO 2 solution and impregnates 25min, be centrifuged
Machine is dehydrated 6~9min；
(3) the resulting fresh-cut common cattail of step (2) is immersed in film mixed liquor and impregnates 30min, centrifuge dehydration 6~
9min, coating liquid include following components in percentage by weight: chitosan 0.10%, citric acid 1.0%, sodium hydroxide 0.09%,
Methyl p-hydroxybenzoate 0.03%, cinnamic acid 0.04%, remaining is water；
(4) step (3) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, it is described fresh-keeping
Film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/
(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
Embodiment 4:
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) the fresh common cattail without corruption, mildew or jaundice is chosen, is arranged, dissection is put into clear water, washes away soil and miscellaneous
Matter；
(2) the resulting fresh-cut common cattail of step (1) is immersed rapidly in 120ppm ClO 2 solution and impregnates 30min, be centrifuged
Machine is dehydrated 6~9min；
(3) the resulting fresh-cut common cattail of step (2) is immersed in film mixed liquor and impregnates 35min, centrifuge dehydration 6~
9min, coating liquid include following components in percentage by weight: chitosan 0.12%, citric acid 1.1%, sodium hydroxide 0.11%,
Methyl p-hydroxybenzoate 0.04%, cinnamic acid 0.05%, remaining is water；
(4) step (3) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, it is described fresh-keeping
Film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/
(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
Embodiment 5:
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) the fresh common cattail without corruption, mildew or jaundice is chosen, is arranged, dissection is put into clear water, washes away soil and miscellaneous
Matter；
(2) the resulting fresh-cut common cattail of step (1) is immersed rapidly in 130ppm ClO 2 solution and impregnates 35min, be centrifuged
Machine is dehydrated 6~9min；
(3) the resulting fresh-cut common cattail of step (2) is immersed in film mixed liquor and impregnates 40min, centrifuge dehydration 6~
9min, coating liquid include following components in percentage by weight: chitosan 0.14%, citric acid 1.2%, sodium hydroxide 0.13%,
Methyl p-hydroxybenzoate 0.05%, cinnamic acid 0.06%, remaining is water；
(4) step (3) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, it is described fresh-keeping
Film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/
(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
Comparative example 1:
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) the fresh common cattail without corruption, mildew or jaundice is chosen, is arranged, dissection is put into clear water, washes away soil and miscellaneous
Matter；
(2) the resulting fresh-cut common cattail of step (1) is immersed rapidly in 110ppm ClO 2 solution and impregnates 25min, be centrifuged
Machine is dehydrated 6~9min；
(3) step (2) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, it is described fresh-keeping
Film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/
(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
It is fresh-keeping to the progress of fresh-cut common cattail according to the method for the embodiment of the present invention 3, except that not applied on fresh-cut common cattail
Film.
Comparative example 2:
A kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, the preservation method the following steps are included:
(1) the fresh common cattail without corruption, mildew or jaundice is chosen, is arranged, dissection is put into clear water, washes away soil and miscellaneous
Matter；
(2) the resulting fresh-cut common cattail of step (1) is immersed in film mixed liquor and impregnates 30min, centrifuge dehydration 6~
9min, coating liquid include following components in percentage by weight: chitosan 0.10%, citric acid 1.0%, sodium hydroxide 0.09%,
Methyl p-hydroxybenzoate 0.03%, cinnamic acid 0.04%, remaining is water；
(3) step (2) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, it is described fresh-keeping
Film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/
(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
It is fresh-keeping to the progress of fresh-cut common cattail according to the method for the embodiment of the present invention 3, except that common cattail is not placed on dioxy
Change and is impregnated in solutions of chlorine.
Effect example:
Common cattail is by arranging, becoming fresh-cut common cattail after dissection, so vegetables will receive the mechanical damage in some dicing process
Wound, the damage for causing vegetables itself to organize cause some physiological reactions for being unfavorable for storage, as the surface after cutting is exposed to sky
It is easy to happen rotten in gas, influences the appearance of vegetables, the anaerobic respiration acceleration for cutting through rear vegetables can generate some peculiar smell, influence
Original smell of vegetables, the vegetables by cutting can aggravate to generate excessive ethylene, malonaldehyde, the chlorophyll of common cattail, solubility
Solid content, the decline of ascorbic acid equal size, the metabolism for enhancing tissue make a large amount of nutrition and energy loss, vegetables are made to lose original
Some values；The cell scratched after cutting will cause the loss of nutriment, provides advantageous growing environment for microorganism, adds
The speed breeding of microorganism, results in the putrid and deteriorated of fresh cut vegetables.Measurement by the embodiment of the present invention 1 to 5 and comparative example 1 to
2 treated fresh-cut common cattail ascorbic acid contents, measurement result are shown in Table 1.
From table 1 it follows that the ascorbic acid after treated fresh-cut common cattail section 7 days by the embodiment of the present invention 1 to 5
Content is in 0.8mg/100g or more, and the ascorbic acid after treated fresh-cut common cattail section 7 days by comparative example 1 and 2 contains
Amount is respectively 0.012 and 0.368, the experimental results showed that, using the preservation method of the embodiment of the present invention 1 to 5 to fresh-cut common cattail section
It is more preferable to carry out fresh-keeping effect, effectively prevents the brown stain of fresh-cut common cattail, extend storage time.
And the film on fresh-cut common cattail, fresh-cut common cattail do not contact comparative example 1 with air, increase what fresh-cut common cattail was oxidized
Possibility increases the generation of fresh-cut common cattail brown stain, so the Vitamin C after treated fresh-cut common cattail 7 days by comparative example 1
Acid is lower, poor using fresh-keeping effect of this method to fresh-cut common cattail.
And fresh-cut common cattail is not put into chlorine dioxide and inhibits to impregnate in liquid by comparative example 2, chlorine dioxide in fresh-cut common cattail
Activity be not inhibited, activity is higher, once contacting with oxygen, be easy for causing fresh-cut common cattail that brown stain occurs, so by
Ascorbic acid of the comparative example 2 after treated fresh-cut common cattail 7 days is lower, using this method to the fresh-keeping effect of fresh-cut common cattail compared with
Difference.
Claims (5)
1. a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail, which is characterized in that the preservation method the following steps are included:
(1) fresh common cattail is chosen, is arranged, dissection, cleaning；
(2) the resulting fresh-cut common cattail of step (1) is immersed in ClO 2 solution and impregnates, drain；
(3) the resulting fresh-cut common cattail of step (2) is immersed in film mixed liquor and impregnates, drain；
(4) step (3) resulting fresh-cut common cattail preservative film is wrapped up, sealing, cryopreservation.
2. a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail according to claim 1, which is characterized in that this is fresh-keeping
Method the following steps are included:
(1) it chooses without corruption, mildew or sallow fresh common cattail, arranges, dissection is put into clear water, washes away soil and impurity；
(2) the resulting fresh-cut common cattail of step (1) is immersed into rapidly 15~35min of immersion in 90~130ppm ClO 2 solution,
Centrifuge is dehydrated 6~9min；
(3) the resulting fresh-cut common cattail of step (2) is immersed and impregnates 20~40min in coating liquid, centrifuge is dehydrated 6~9min, institute
Stating coating liquid includes following components in percentage by weight: chitosan 0.06~0.14%, citric acid 0.8~1.2%, sodium hydroxide
0.05~0.13%, methyl p-hydroxybenzoate 0.01~0.05%, cinnamic acid 0.02~0.06%, remaining is water；
(4) step (3) resulting fresh-cut common cattail preservative film is wrapped up, sealing, is placed at 0 ± 2 DEG C and stores, the preservative film is
Point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide transmission rate 69817cm3/(m2·
Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
3. a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail according to claim 2, which is characterized in that described two
Chlorine monoxid solution concentration is 110ppm.
4. a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail according to claim 3, which is characterized in that the painting
Film liquid includes following components in percentage by weight: chitosan 0.10%, citric acid 1.0%, sodium hydroxide 0.09%, para hydroxybenzene
Methyl formate 0.03%, cinnamic acid 0.04%, remaining is water.
5. a kind of preservation method of the antibacterial film low temperature of fresh-cut common cattail according to any one of claim 2 to 4, special
Sign is: the preservative film is point off PE preservative film, OTR oxygen transmission rate 15334cm3/(m2Atm for 24 hours), carbon dioxide is saturating
Cross rate 69817cm3/(m2Atm for 24 hours), vapor transfer rate 66g/ (m2·24h)。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112772713A (en) * | 2021-01-29 | 2021-05-11 | 淮安康得乐食品有限公司 | Method for preserving and protecting color of common cattail |
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| CN105053172A (en) * | 2015-08-17 | 2015-11-18 | 北京市农林科学院 | Fresh keeping agent, preparation method thereof, and application of fresh keeping agent in fresh keeping treatment of dishcloth gourds |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112772713A (en) * | 2021-01-29 | 2021-05-11 | 淮安康得乐食品有限公司 | Method for preserving and protecting color of common cattail |
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