CN109043304A - The method of water shield keeping fresh and protecting color - Google Patents
The method of water shield keeping fresh and protecting color Download PDFInfo
- Publication number
- CN109043304A CN109043304A CN201810698348.0A CN201810698348A CN109043304A CN 109043304 A CN109043304 A CN 109043304A CN 201810698348 A CN201810698348 A CN 201810698348A CN 109043304 A CN109043304 A CN 109043304A
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- Prior art keywords
- water shield
- water
- high pressure
- ultra high
- pressure treatment
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- 235000006506 Brasenia schreberi Nutrition 0.000 title claims abstract description 118
- 244000267222 Brasenia schreberi Species 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000004806 packaging method and process Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000009461 vacuum packaging Methods 0.000 claims abstract description 23
- 239000008237 rinsing water Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 239000000084 colloidal system Substances 0.000 abstract description 9
- 238000004321 preservation Methods 0.000 abstract description 4
- 238000006467 substitution reaction Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 24
- 230000008859 change Effects 0.000 description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 11
- 230000001954 sterilising effect Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000004659 sterilization and disinfection Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 6
- 235000014347 soups Nutrition 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- NNBFNNNWANBMTI-UHFFFAOYSA-M brilliant green Chemical compound OS([O-])(=O)=O.C1=CC(N(CC)CC)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](CC)CC)C=C1 NNBFNNNWANBMTI-UHFFFAOYSA-M 0.000 description 5
- 229930002875 chlorophyll Natural products 0.000 description 5
- 235000019804 chlorophyll Nutrition 0.000 description 5
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001953 sensory effect Effects 0.000 description 4
- 229960000583 acetic acid Drugs 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000012780 transparent material Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 238000012009 microbiological test Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000218208 Caltha Species 0.000 description 1
- 235000008749 Caltha palustris Nutrition 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 240000007171 Imperata cylindrica Species 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical compound N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000000762 glandular Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, 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
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/40—Colouring or decolouring of foods
- A23L5/41—Retaining or modifying natural colour by use of additives, e.g. optical brighteners
-
- 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
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, 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
- A23L19/00—Products from fruits or vegetables; Preparation or treatment thereof
- A23L19/03—Products from fruits or vegetables; Preparation or treatment thereof consisting of whole pieces or fragments without mashing the original pieces
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, 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
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/20—Removal of unwanted matter, e.g. deodorisation or detoxification
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, 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
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/40—Colouring or decolouring of foods
-
- 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)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Packages (AREA)
Abstract
The present invention provides a kind of method of water shield keeping fresh and protecting color, includes the following steps, 1), packaging: colour protecting liquid and water shield are packed into vacuum packaging bag；2), first time ultra high pressure treatment: ultra-high pressure apparatus ultra high pressure treatment is used；3) it, rinses: taking out water shield, with water rinsing water shield until water shield pH is 6.5~7, water shield after being rinsed；4) it, packs: water shield after water and rinsing being used in conjunction with vacuum and is protected from light packaging bag hermetic package；It is 48~52% that water, which accounts for water shield and the mass percent of water gross weight, and surplus is water shield；5), second of ultra high pressure treatment；After being protected from light packaging bag ultra high pressure treatment 20s~30s to vacuum under the pressure of 400MPa-600MPa using ultra-high pressure apparatus, to keeping fresh and protecting color after water shield, be stored at room temperature vacuum and be protected from light packaging bag.Present invention first time ultra high pressure treatment is used as colour protecting liquid using Zn (CH3COO) 2, and in first time ultra high pressure treatment, Zn2+ can penetrate colloid, effectively substitution Mg2+, to reach green preservation effect.
Description
Technical field
The present invention relates to food processing preservation fields, and in particular to a kind of keeping fresh and protecting color method of water shield.
Background technique
Water shield (Braseniu schreberi) also known as cogongrass, wild duck certain herbaceous plants with big flowers, membranaceous marshmarigold herb.For perennial root aquatic herbaceous plant.
Water shield has cultivation history in 1500 in China, is one of the famous dish of Chinese tradition cultivation.The edible part of water shield is to be grown in
Tender tip with transparent colloid and nascent leaf roll in clean water.Water shield tender texture, color is dark green, and it is delicious to cook soup lubrication.Newly
The water shield of fresh picking is put into pure water rapidly, and water temperature is no more than 20 DEG C, then freshness-retained 2d, at 3~5 DEG C, 5d or so.
Glandular hairs on rotten water shield leaf roll fall off, and colloid, which is disintegrated, to go bad, and generates peculiar smell, to lose its edible value.
The processing method of water shield is entirely that fresh water shield finishes in industry at present, and glacial acetic acid is generallyd use after water-removing and is protected
It is fresh, influence the natural colored and flavor of water shield.It is fresh-keeping by glacial acetic acid plus water, but water shield has pungent acetic acid taste, water shield color
Damp tea is yellow, loses tempting emerald green of fresh water shield, water shield tissue becomes softer, loses the tender and crisp mouthfeel of fresh water shield, seeks
Feeding component damages are serious, and water shield quality is remarkably decreased.Quick-freezing fresh-keeping, one side processing cost and transportation cost are high, in addition a side
Face also will affect water shield mouthfeel, to be using its method for water shield processing enterprise.There is patent report, using ultrahigh-pressure sterilization: using
Superhigh pressure bactericidal apparatus is ultrahigh-pressure sterilization 3-5 minutes under the pressure of 350MPa-550MPa；Storage refrigeration, refrigerated storage temperature 1-5
℃.It can achieve fresh-keeping effect.But bactericidal effect efficiency is lower, sterilizing time 3-5min.Storage and sale are always cold
Chain, higher cost.
Therefore, a kind of reasonable processing technology and packing and storing method are found, it is preferable to retain water shield tender texture, color
Pool is dark green, the characteristics of nutrition all risk insurance stays, and facilitates storage and transport, has the characteristics that industrialized implementation important.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of production method of water shield keeping fresh and protecting color, this method processing steps
Simply, required time is shorter, and process is reliable.Water shield bright green obtained, normal temperature storage, and industrialized implementation is strong.
In order to solve the above technical problems, the present invention provides a kind of method of water shield keeping fresh and protecting color, comprising the following steps:
1) it, packs
The colour protecting liquid of pH 3.9~4.1 and water shield are packed into vacuum packaging bag, vacuum packaging is sealed and (only requires vacuum
Whether packaging, be protected from light no requirement (NR) to vacuum packaging bag), wherein colour protecting liquid accounts for the mass percent of the gross weight of colour protecting liquid and water shield and is
48~52%, surplus is water shield；Obtain the vacuum packaging bag for being packaged with water shield；
2), first time ultra high pressure treatment
Superelevation is carried out to the vacuum packaging bag that step 1) obtains under the pressure of 350MPa-500MPa using ultra-high pressure apparatus
Pressure processing 30s-90s, the vacuum packaging bag after obtaining ultra high pressure treatment；
3) it, rinses
It dismantles step 2) and obtains the vacuum packaging bag after ultra high pressure treatment, take out water shield, with water rinsing water shield until water shield
PH is 6.5~7, water shield after being rinsed；
4) it, packs
Water shield after rinsing that water and step 3) obtain is used in conjunction with vacuum and is protected from light packaging bag hermetic package；Water account for water shield and
The mass percent of water gross weight is 48~52%, and surplus is water shield；
5), second of ultra high pressure treatment
Packaging bag superelevation is protected from light to the vacuum that step 4) obtains under the pressure of 400MPa-600MPa using ultra-high pressure apparatus
Pressure processing 20s~30s after, to keeping fresh and protecting color after water shield (10~30 DEG C are stored at room temperature vacuum and are protected from light packaging bag).
Improvement as the method to water shield keeping fresh and protecting color of the present invention:
Colour protecting liquid in step 1) is Zn (CH3COO)2Colour protecting liquid, colour protecting liquid include Zn (CH3COO)2、CH3COOH and
Water, wherein Zn (CH3COO)2Concentration is 80mg/Kg~160mg/Kg.
Colour protecting liquid the preparation method comprises the following steps: first configuration concentration is the Zn (CH of 80mg/Kg~160mg/Kg3COO)2It is dissolved in water, so
PH 3.9~4.1 is adjusted afterwards (using CH3COOH is adjusted).
As the further improvements in methods to water shield keeping fresh and protecting color of the present invention:
Vacuum in step 5), which is protected from light in packaging bag, is provided with observation window, and observation window is translucent material.
The technical advantage of the method for water shield keeping fresh and protecting color of the present invention are as follows:
1, first time ultra high pressure treatment, using Zn (CH3COO)2As colour protecting liquid, in first time ultra high pressure treatment, Zn2+
Colloid, effectively substitution Mg can be penetrated2+, to reach green preservation effect.Meanwhile under super-pressure effect, chlorophyll release, water shield becomes
It obtains bud green；First time superpressure processing simultaneously can achieve the effect of sterilising and enzyme inactivating；
2, it rinses, after first time ultra high pressure treatment, has to rinse, it is ensured that otherwise water shield pH value will affect in 6.5-7
Its final mouthfeel；
3, it has rinsed, has carried out second of ultra high pressure treatment, continued to discharge part chlorophyll, while further sterilization.
4, it is kept in dark place, prevents soup muddiness from turning yellow.
Specific embodiment
The present invention is described further combined with specific embodiments below, but protection scope of the present invention is not limited in
This.
The fresh water shield that raw material preferably selected the same day to pick, pesticide residue meet relevant criterion requirement.GB should be met with water
5749 requirement.It rejects in tender tip leaf roll colloid and is mixed with silt, clean up.It is carried out according to the length of water shield petiole and its blade
Classification is selected, and generally has 4 ranks, S grades, M grades, L grades and irrespective of size.The present invention can be used any one in four rank water shields
Kind.
Vacuum is protected from light bag and is protected from light packing plastics bag using the vacuum of 10cm*15cm specification.Following percentage is quality
Percentage.
Base case 1:
A kind of production method of the keeping fresh and protecting color of water shield is successively followed the steps below using cleaned water shield as raw material:
1, it packs
Splitting vacuum packaging, use colour protecting liquid 50% (colour protecting liquid for pH 4.0, Zn (CH3COO)2Concentration is 120mg/Kg),
50% water shield is sealed packaging.
2, first time ultra high pressure treatment
Ultra high pressure treatment 60s, room temperature are carried out to step 1 vacuum packaging bag under the pressure of 400MPa using ultra-high pressure apparatus
It saves.
Base case 2
A kind of production method of the keeping fresh and protecting color of water shield successively carries out following to clean the water shield being classified as raw material
Step:
1, it packs
Splitting is protected from light vacuum packaging (upper right corner 4cm2Area light transmission), use colour protecting liquid 50% (colour protecting liquid for pH 4.0,
Zn(CH3COO)2Concentration is 120mg/Kg), 50% water shield is sealed packaging.
2, first time ultra high pressure treatment
Pressure using ultra-high pressure apparatus in 400MPa carries out ultra high pressure treatment 60s to the vacuum packaging bag that is protected from light of step 1,
Vacuum packaging bag after obtaining first time ultra high pressure treatment.
3, second of ultra high pressure treatment
Using vacuum packaging of the ultra-high pressure apparatus after the first time ultra high pressure treatment that the pressure of 500MPa obtains step 2
After bag ultra high pressure treatment 20s, it is stored at room temperature.
This embodiment is for base case 1, and more step 3 (second of ultra high pressure treatment), remaining step is identical.
Embodiment 3
A kind of production method of the keeping fresh and protecting color of water shield successively carries out following to clean the water shield being classified as raw material
Step:
1, it packs
Splitting vacuum packaging, use colour protecting liquid 50% (colour protecting liquid for pH 4.0, Zn (CH3COO)2Concentration is 120mg/Kg),
50% water shield is sealed packaging.
2, first time ultra high pressure treatment
Using ultra-high pressure apparatus under the pressure of 400MPa ultra high pressure treatment 60s.
3, it rinses
After release, vacuum packaging bag is dismantled, rinses water shield with clear water, it is ensured that water shield ph is about 6.5.
4, it packs for second
It is protected from light vacuum packaging (light transmission of upper right corner 4c ㎡ area) packaging.Pure water: 50%, water shield 50%.
5, second of ultra high pressure treatment
Using ultra-high pressure apparatus, ultra high pressure treatment 20s, room temperature are stored under the pressure of 500MPa.
This embodiment is more step 3 (rinsing) for base case 2, step 4 (secondary package), remaining step
It is identical.
Base case compares 1-1
A kind of production method of the keeping fresh and protecting color of water shield successively carries out following to clean the water shield being classified as raw material
Step:
1, it packs
Vacuum plastic bag packaging.Pure water: 50%, water shield 50%.
2, first time ultra high pressure treatment
Using ultra-high pressure apparatus under the pressure of 400MPa ultra high pressure treatment 60s, be stored at room temperature.
This base case compares 1-1 for base case 1, changes colour protecting liquid ingredient, " colour protecting liquid pH 4.0,
Zn(CH3COO)2Concentration is that 120mg/Kg " is changed to " 50% pure water ", remaining equivalent base case 1.
Base case compares 1-2
A kind of production method of the keeping fresh and protecting color of water shield successively carries out following to clean the water shield being classified as raw material
Step:
1, it packs
Vacuum plastic bag packaging, 50% colour protecting liquid (colour protecting liquid pH 4.0, Zn (CH3COO)2Concentration 80mg/Kg), 50% water shield
Dish, sealed package.
2, first time ultra high pressure treatment
Using ultra-high pressure apparatus under the pressure of 400MPa ultra high pressure treatment 60s, be stored at room temperature.
This base case compares 1-2 for base case 1, changes colour protecting liquid ingredient, " colour protecting liquid pH 4.0,
2 concentration of Zn (CH3COO) is that 120mg/Kg " is changed to " colour protecting liquid pH 4.0, Zn (CH3COO)2Concentration is 80mg/Kg ", remaining is equivalent
Base case 1.
Base case compares 1-3
A kind of production method of the keeping fresh and protecting color of water shield successively carries out following to clean the water shield being classified as raw material
Step:
1, it packs
Vacuum plastic packaging, colour protecting liquid are pH 4.0, Zn (CH3COO)2Concentration 160mg/Kg, 50% water shield, sealed package.
2, first time ultra high pressure treatment
Using ultra-high pressure apparatus under the pressure of 400MPa ultra high pressure treatment 60s, be stored at room temperature.
This base case compares 1-3 for base case 1, changes colour protecting liquid ingredient, " colour protecting liquid pH 4.0,
Zn(CH3COO)2Concentration is that 120mg/Kg " is changed to " colour protecting liquid pH 4.0, Zn (CH3COO)2Concentration is 160mg/Kg ", remaining etc.
With base case 1.
Comparative example 1-4
For embodiment 3, do following change: colour protecting liquid 50% and water shield 50% are changed to " colour protecting liquid 25% and water shield
Dish 75% ", remaining is equal to embodiment 3.
Comparative example 1-5
For embodiment 3, do following change: colour protecting liquid 50% and water shield 50% are changed to " colour protecting liquid 75% and water shield
Dish 25% ", remaining is equal to embodiment 3.
Comparative example 1-6
For embodiment 3, do following change: colour protecting liquid pH 4.0 is changed to " colour protecting liquid pH 3.0 ", remaining is equivalent
In embodiment 3.
Comparative example 1-7
For embodiment 3, do following change: colour protecting liquid pH 4.0 is changed to " colour protecting liquid pH 5.0 ", remaining is equivalent
In embodiment 3.
Comparative example 1-8
For embodiment 3, following change: Zn (CH is done3COO)2Colour protecting liquid is changed to Cu (CH3COO)2Colour protecting liquid,
It is remaining to be equal to embodiment 3.
It is exceeded to will cause Cu2+, therefore cannot use.
Comparative example 2-1
For embodiment 3, do following change: first time ultra high pressure is changed to 200MPa by 400MPa, remaining
It is equal to embodiment 3.
Embodiment 4
For embodiment 3, do following change: first time ultra high pressure is changed to 500MPa by 400MPa, remaining
It is equal to embodiment 3.
Embodiment 5
For embodiment 3, do following change: ultra high pressure treatment time first time is changed to 30s by 60s, remaining etc.
It is same as embodiment 3.
Embodiment 6
For embodiment 3, do following change: ultra high pressure treatment time first time is changed to 90s by 60s, remaining etc.
It is same as embodiment 3.
Embodiment 7
For embodiment 3, do following change: second of ultra high pressure treatment is changed to 400MPa by 500MPa, remaining
It is equal to embodiment 3.
Embodiment 8
For embodiment 3, do following change: second of ultra high pressure treatment is changed to 600MPa by 500MPa, remaining
It is equal to embodiment 3.
Comparative example 2-7
For embodiment 3, do following change: second of ultra high pressure treatment time is changed to 10s by 20s, remaining etc.
It is same as embodiment 3.
Embodiment 9
For embodiment 3, do following change: second of ultra high pressure treatment time is changed to 30s by 20s, remaining etc.
It is same as embodiment 3.
Comparative example 2-9
For embodiment 3, do following change: vacuum is protected from light packaging bag (upper right corner light transmission) packaging, is changed to vacuum
Transparent plastic bag packaging, remaining is equal to embodiment 3.
Comparative example 2-10
For embodiment 3, do following change: vacuum is protected from light packaging bag (upper right corner aperture visible light) packaging, changes
It is protected from light plastic bag packaging completely for vacuum, remaining is equal to embodiment 3.
Comparative example 2-11
For embodiment 3, do following change: vacuum is protected from light packaging bag upper right corner 4cm2Area light transmission is changed to
“5cm2Area light transmission ", remaining is equal to embodiment 3.
Illustrate: the final vacuum of water shield is protected from light in packaging bag, designs transparent part, primarily to being convenient for consumer
The emerald green color of water shield is observed, without regard to the transparent area (4cm of maximum for looking after its color of influence2),
Following experiments use same rank water shield.
Experiment one
The product that above-described embodiment and comparative example obtain, water shield normal temperature storage is respectively 0 day, 30 days, 60 after keeping fresh and protecting color
It, 90 days and 180 days progress Micro biological Tests, the method for inspection is according to GB 4789.1-2016, Micro biological Tests index such as table 1
It is shown:
Water shield microbiological indicator under table 1, different technology conditions
As can be seen from Table 1, ultra high pressure treatment can significantly kill the microorganism in water shield.But secondary superelevation need to be used
Sterilization mode is pressed, and the control of super-pressure first time ultrahigh-pressure sterilization condition exists: using the pressure of ultra-high pressure apparatus 400MPa-500MPa
Second of sterilization conditions: lower ultra high pressure treatment 60s-90s by force is surpassed under the pressure of 500MPa-600MPa using ultra-high pressure apparatus
HIGH PRESSURE TREATMENT 20s-30s, can effectively kill bacteria.It is individually inadequate using primary sterilization or sterilization pressure and time, it cannot be effective
Sterilization.
Experiment two
The product that above-described embodiment and comparative example obtain, the storage of room temperature sunshine (were stored at room temperature vacuum and are protected from light packet at 1 day respectively
Pack 1 day), organoleptic examination is carried out, for the method for inspection according to as shown in table 2, inspection result is as shown in table 3.
2 water shield sensory evaluation index of table
3 different condition process of table water shield sensory evaluation index after the 1st day
Experimental result annotation
1) as can be seen from Table 3, Zn (CH in the pressure of first time super-pressure and time and colour protecting liquid3COO)2Concentration is big
It is small, it will affect the color and mouthfeel of water shield, while after ultra high pressure treatment, gelatin in water shield can be very good to retain, and soup is clear
It is clear transparent, the distinctive fragrant of water shield.
2) base case compares 1-1 compared with base case 1, and pure water is used to pack, therefore under super-pressure effect, only
The release of some greenery element, and without color protection treatment, therefore color is not so good as base case 1.Colour protecting liquid concentration 120mg/Kg,
160mg/Kg, i.e., under effective Zn+ content, under (comparative example 1-4 and comparative example 1-5) suitable ultra-high pressure condition, effect of color protection
Unanimously.Under the conditions of pH is 4.0, effect of color protection is best.
3) base case 2 uses secondary ultra high pressure treatment compared with base case 1, and color can achieve emerald green.
In first time ultra high pressure treatment, Zn2+Colloid, effectively substitution Mg can be penetrated2+, to reach green preservation effect.Meanwhile superelevation
Under pressure effect, chlorophyll release, water shield becomes bud green；Second of ultra high pressure treatment, chlorophyll further discharge, it is ensured that water shield is fresh
Green.But when ultra high pressure treatment overlong time or ultra high pressure it is excessive, water shield can be made further to turn yellow instead.
4) embodiment 3 after first time color protection, rinses colour protecting liquid compared with base case 2, is then adopted again
With secondary ultra high pressure treatment is obtained, rinsing can effectively remove colour protecting liquid, carry out final packaging using pure water, will not influence its mouth
Sense, retains the distinctive fragrant of its water shield.
5) comparative example 2-1 shows within the scope of effective colour protecting liquid, and first time ultra high pressure is insufficient, and effect of color protection is bad.
On the one hand its reason is that chlorophyll cannot be released preferably, another aspect Zn2+Colloid preferably cannot be crossed through water shield, thus
Mg cannot effectively be replaced2+。
Experiment three
Above-described embodiment and comparative example resulting product, selection " effect and embodiment 3 in the 1st day Analyses Methods for Sensory Evaluation Results of table 3
Identical embodiment and comparative example ", and " effect is same as Example 3 in water shield microbiological indicator under 1 different technology conditions of table
Embodiment and comparative example ", both identical embodiment and after comparative example normal temperature storage 180 days, carries out organoleptic examination, as a result such as
Shown in table 4.
4 different condition process of table water shield sensory evaluation index after the 180th day
| Color | Colloid | Soup | Mouthfeel | Comprehensive score | |
| Embodiment 3 | 6 | 6 | 6 | 6 | 24 |
| Comparative example 1-5 | 6 | 6 | 6 | 6 | 24 |
| Comparative example 2-10 | 6 | 6 | 6 | 6 | 24 |
| Comparative example 2-11 | 3 | 4 | 3 | 5 | 15 |
Experimental result annotation
1) as can be seen from Table 4, ultra high pressure treatment twice, wherein first time colour protecting liquid adds super-pressure, and second conventional super
HIGH PRESSURE TREATMENT can make water shield keep emerald green, and colloid is kept not to be destroyed substantially, and soup is as clear as crystal, and it is special to retain water shield
There is fragrant, and the shelf-life at least can reach 180 days.
2) comparative example 1-5 can achieve good keeping fresh and protecting color effect, but it need to add more colour protecting liquid " colour protecting liquid
75% and water shield 25% ", and there is cleaning process in the later period, be easy to cause waste, increases production cost.
3) after comparative example 2-11 can be seen that ultra high pressure treatment, water shield still needs to be kept in dark place, illumination to water shield color and
Soup influences more serious.But in product industrialization production and the marketization, partially transparent material packaging is can be used in packaging,
The emerald green color of water shield is observed convenient for consumer, present invention discover that 10*15cm is protected from light packaging bag, using partially transparent material packet
Dress, transparent material area≤4cm2Its color will not be impacted.
The above list is only a few specific embodiments of the present invention for finally, it should also be noted that.Obviously, this hair
Bright to be not limited to above embodiments, acceptable there are many deformations.Those skilled in the art can be from present disclosure
All deformations for directly exporting or associating, are considered as protection scope of the present invention.
Claims (3)
1. the method for water shield keeping fresh and protecting color, which comprises the following steps:
1) it, packs
The colour protecting liquid of pH 3.9~4.1 and water shield are packed into vacuum packaging bag and are sealed vacuum packaging, wherein colour protecting liquid accounts for shield
The mass percent of the gross weight of color liquid and water shield is 48~52%, and surplus is water shield；Obtain the vacuum packaging bag for being packaged with water shield；
2), first time ultra high pressure treatment
Ultra high pressure treatment 30s-90s is carried out to the vacuum packaging bag that step 1) obtains under the pressure of 350MPa-500MPa, is obtained
Vacuum packaging bag after ultra high pressure treatment；
3) it, rinses
It dismantles step 2) and obtains the vacuum packaging bag after ultra high pressure treatment, take out water shield, with water rinsing water shield until water shield pH is
6.5~7, water shield after being rinsed；
4) it, packs
Water shield after rinsing that water and step 3) obtain is used in conjunction with vacuum and is protected from light packaging bag hermetic package；Water accounts for water shield and water is total
The mass percent of weight is 48~52%, and surplus is water shield；
5), second of ultra high pressure treatment
Packaging bag ultra high pressure treatment 20s~30s is protected from light to the vacuum that step 4) obtains under the pressure of 400MPa-600MPa, is obtained
Water shield after to keeping fresh and protecting color.
2. the method for water shield keeping fresh and protecting color according to claim 1, it is characterised in that:
Colour protecting liquid in step 1) is Zn (CH3COO)2Colour protecting liquid, wherein Zn (CH3COO)2Concentration is 80mg/Kg~160mg/
Kg。
Colour protecting liquid the preparation method comprises the following steps: first configuration concentration is the Zn (CH of 80mg/Kg~160mg/Kg3COO)2It is dissolved in water, is then adjusted
Save pH 3.9~4.1.
3. the method for water shield keeping fresh and protecting color according to claim 2, it is characterised in that:
Vacuum in step 5), which is protected from light in packaging bag, is provided with observation window, and observation window is translucent material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115316662A (en) * | 2021-03-30 | 2022-11-11 | 云南师范大学 | Treatment method of trypsin inhibitor in pseudo-ginseng flowers |
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| CN103168829A (en) * | 2013-04-18 | 2013-06-26 | 重庆博智高压科技有限公司 | Ultrahigh-pressure preservation method of brasenia schrebei |
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