CN109320786A - A kind of edible mushroom packaging material - Google Patents
A kind of edible mushroom packaging material Download PDFInfo
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- CN109320786A CN109320786A CN201811309896.6A CN201811309896A CN109320786A CN 109320786 A CN109320786 A CN 109320786A CN 201811309896 A CN201811309896 A CN 201811309896A CN 109320786 A CN109320786 A CN 109320786A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
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- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
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- C08J2397/00—Characterised by the use of lignin-containing materials
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The present invention relates to a kind of edible mushroom packaging materials, belong to field of packaging material.The present invention is first from water floatage, it is mentioned by boiling, acid, water lettuce fiber is prepared in the techniques such as alkali carries, it is again that carboxymethyl chitosan and xanthan gum is soluble in water, mixed liquor is obtained with after methanol mixing, reacts after being modified using laccase to water lettuce fiber with mixed liquor, is concentrated after reaction, after concentrate and montmorillonite, sorbierite, succinylated monoglyceride mix to obtain viscous fluid, blown film after deaeration cuts, edible mushroom packaging material can be obtained.The edible mushroom packaging material that the present invention is prepared can not only inhibit the growth of harmful bacteria to breed, the decomposition of edible mushroom is set to be in minimum state, extend the fresh-retaining preserving time, and the packaging material formed has microcellular structure, more effectively slow down moisture loss, preferable cellular morphology is kept, it is easy to use, safe.
Description
Technical field
The present invention relates to a kind of edible mushroom packaging materials, belong to field of packaging material.
Background technique
Edible mushroom delicious flavour, nutritive value are high.Edible mushroom belongs to climacteric type, constantly absorbs at normal temperature after picking
Oxygen in air still carries out strong metabolic activity and respiration, gradually decreases dry matter, leads to edible mushroom fresh mushroom
Change colour, is spoiled, to influence the edible value and appearance of edible mushroom.It is stored general 5 days or so using existing cold storing and fresh-keeping technology
Original local flavor is lost, is not suitable for transporting for long-distance.Therefore, effective storage technique is developed, is necessary.
Edible mushroom moisture content is very high, fructification surface layer is also no significantly protects structure, during post harvest transport
Easily dehydration is wilted, and is easy so as to cause fructification brown stain or even to be rotted by mechanical wounding and microbial contamination, most final decline
The commodity value and edible quality of low edible mushroom, the shelf quality of edible mushroom can only maintain 3~4 days under room temperature, and therefore, development is opened
Send out it is a kind of can apply to edible mushroom and easy to use, cost rationally, the preservation technology that works well, to extending edible mushroom
Storage time and shelf life effectively adjust the market production and marketing of edible mushroom dull and rush season section, have very great practical significance.
Traditional edible fungus fresh-keeping material is mostly packed using PE film, and packing film function is relatively simple, need to punch,
Film, addition the ancillary measures such as antistaling agent or hygroscopic agent can obtain preferable effect, technical equipment, fresh-keeping cost,
Obstacle existing for food safety and sanitation etc. constrains a wide range of popularization and utilization of the technology.So developing food products packaging is wanted
Meet the consumption demand of modern's different levels with diversification；It is sterile, conveniently
, intelligence, personalization be food packaging development new fashion；The function of food packaging is expanded, mitigates packaging waste to ring
The green package of border pollution, it has also become the development trend of new century food packaging.
Summary of the invention
The technical problems to be solved by the invention: it is mostly wrapped using PE film for current traditional edible fungus fresh-keeping material
Dress, function is relatively simple, needs to punch, and needs that antistaling agent is cooperated to carry out auxiliary use and can be only achieved effect, and practical operation is complicated
The problem of, a kind of method of modified water lettuce fiber preparation edible mushroom packaging material of laccase is provided, the present invention is first from water lettuce
Ye Zhong is mentioned by boiling, acid, the techniques such as alkali carries are prepared water lettuce fiber, then carboxymethyl chitosan and xanthan gum are dissolved in
Mixed liquor is obtained in water and after methanol mixing, reacts, reacts with mixed liquor after being modified using laccase to water lettuce fiber
After be concentrated, obtain after concentrate and montmorillonite, sorbierite, succinylated monoglyceride mix to obtain viscous fluid, blown film after deaeration is cut,
Edible mushroom packaging material can be obtained.The edible mushroom packaging material that the present invention is prepared can not only inhibit the taste of harmful bacteria
Raw breeding, makes the decomposition of edible mushroom be in minimum state, extends the fresh-retaining preserving time, and packaging material has micropore knot
Structure more effectively slows down scattering and disappearing for edible mushroom moisture, keeps preferable cellular morphology, easy to use, safe.
In order to solve the above technical problems, the present invention is using technical solution as described below:
(1) 800~1000g water floatage is weighed, the fragment of 3~5cm2 is cut into after cleaning surface with clear water, water after chopping is floated
Lotus leaf, which is added in 2~3L water, boils 2~4min, takes out after boiling, is added in cooking machine and is beaten 5~10min, use gauze after mashing
Filtering, obtains filter residue, 1:4 in mass ratio mixes filter residue with 5% hydrochloric acid solution of mass fraction, after mixing at a temperature of 70~75 DEG C
3~4h is extracted, filter residue is filtered to obtain after extraction, and be washed with deionized 3~5 times；
(2) filter residue 1:8 in mass ratio after above-mentioned washing is mixed with 5% sodium hydroxide solution of mass fraction, in 40~50 DEG C of temperature
18~22h of lower extraction, filters to get filtrate after extraction, by filtrate be added centrifugal separator in, with 4000~5000r/min revolving speed from
The heart separates 5~8min, and sediment is obtained after centrifugation, and 1~3 times of mass fraction 10% of sediment quality is added after being washed with water 2~4 times
Liquor natrii hypochloritis, adjusting pH with 45% acetic acid solution of mass fraction after mixing evenly is 5~6, and 30~50min is stirred after adjusting,
Filter residue is filtered to obtain, and is put into baking oven after washing 3~5 times with 85% ethanol solution of mass fraction, it is dry at a temperature of 60~70 DEG C
6~8h, crushed after being dried cross 70~80 meshes, obtain water lettuce fiber, spare；
(3) 5~10g carboxymethyl chitosan is weighed respectively and 8~12g xanthan gum is added in 500~600g deionized water, is put into
In water-bath, it is stirred 60~80min after being heated to 45~55 DEG C, 10~15mL methanol is added after stirring, is stirred
Mixed liquor is obtained after even；
It (4) is that 5~7g laccase is added in 3.5~4.0 NaAc_HAc buffer solutions to 500~600mLpH, after mixing
20~30min is stood, is then centrifugated supernatant and to be fitted into flask, it is spare that 8~10g step (2) are added into flask
Water lettuce fiber, be put into water-bath, be warming up to 35~45 DEG C, be stirred to react after 20~40min and be added on 100~120mL
Mixed liquor and 50~100mL dehydrated alcohol are stated, 4~6h is stirred to react, reaction terminates rotary evaporation to original volume 50~60%, obtains
Concentrate；
(5) 0.3~0.5g nano montmorillonite, 10~15g sorbierite and 3~5g mono succinate glycerol are added into above-mentioned concentrate
Ester obtains viscous fluid after being uniformly mixed, inflation film manufacturing machine is added after 20~30min of vacuum defoamation and carries out blown film, cut, 50~60
Dry 40~50h, can be obtained edible mushroom packaging material after dry at a temperature of DEG C.
Application method of the invention: the edible mushroom packaging material that the present invention is prepared packs edible mushroom, packaging
Edible mushroom afterwards can be put into refrigerator at a temperature of 25~26 DEG C with fresh-keeping 8~10 days, fresh-keeping 15~20 at a temperature of 3~5 DEG C
It, the packaging material that the present invention is prepared with a thickness of 0.102~0.115mm, tensile strength is 15.5~16.7MPa, is broken
Splitting elongation is 50~70%, and aperture is 0.1~0.3 μm, and rate of perviousness is 3.024 × 10-13~3.546 × 10-13g.cm/
cm2·s·Pa。
The present invention is compared with other methods, and advantageous effects are:
(1) the edible mushroom packaging material that the present invention is prepared can inhibit the growth of harmful bacteria to breed, and make point of edible mushroom
Solution effect is in minimum state, extends the fresh-retaining preserving time；
(2) the edible mushroom packaging material that the present invention is prepared has microcellular structure, more effectively slows down edible mushroom moisture loss, protects
Hold preferable cellular morphology；
(3) the edible mushroom packaging material that the present invention is prepared does not need auxiliary antistaling agent, and fresh keeping time 15~20 also can be improved
It, it is easy to use, it can be degradable.
Specific embodiment
800~1000g water floatage is weighed, the fragment of 3~5cm2 is cut into after cleaning surface with clear water, water after chopping is floated
Lotus leaf, which is added in 2~3L water, boils 2~4min, takes out after boiling, is added in cooking machine and is beaten 5~10min, use gauze after mashing
Filtering, obtains filter residue, 1:4 in mass ratio mixes filter residue with 5% hydrochloric acid solution of mass fraction, after mixing at a temperature of 70~75 DEG C
3~4h is extracted, filter residue is filtered to obtain after extraction, and be washed with deionized 3~5 times；By filter residue 1:8 in mass ratio after above-mentioned washing
It is mixed with 5% sodium hydroxide solution of mass fraction, 18~22h is extracted at a temperature of 40~50 DEG C, is filtered to get filtrate after extraction, it will
Filtrate is added in centrifugal separator, is centrifugated 5~8min with 4000~5000r/min revolving speed, sediment is obtained after centrifugation, uses water
1~3 times of 10% liquor natrii hypochloritis of mass fraction of sediment quality is added after washing 2~4 times, uses mass fraction after mixing evenly
It is 5~6 that 45% acetic acid solution, which adjusts pH, and 30~50min is stirred after adjusting, filters to obtain filter residue, and molten with 85% ethyl alcohol of mass fraction
Liquid is put into baking oven after washing 3~5 times, and dry 6~8h, crushed after being dried are crossed 70~80 meshes, obtained at a temperature of 60~70 DEG C
Water lettuce fiber, it is spare；5~10g carboxymethyl chitosan is weighed respectively and 8~12g xanthan gum is added to 500~600g deionization
It in water, is put into water-bath, 60~80min is stirred after being heated to 45~55 DEG C, 10~15mL methanol is added after stirring, stirs
It mixes and obtains mixed liquor after mixing；It is that 5~7g paint is added in 3.5~4.0 NaAc_HAc buffer solutions to 500~600mLpH
Enzyme stands 20~30min after mixing, is then centrifugated supernatant and to be fitted into flask, it is added 8 into flask~
10g spare water lettuce fiber, is put into water-bath, is warming up to 35~45 DEG C, be stirred to react after 20~40min and be added 100~
The above-mentioned mixed liquor of 120mL and 50~100mL dehydrated alcohol, are stirred to react 4~6h, reaction terminate rotary evaporation to original volume 50~
60%, obtain concentrate；0.3~0.5g nano montmorillonite, 10~15g sorbierite and 3~5g succinic acid are added into above-mentioned concentrate
Monoglyceride obtains viscous fluid after being uniformly mixed, inflation film manufacturing machine is added after 20~30min of vacuum defoamation and carries out blown film, cut,
Dry 40~50h, can be obtained edible mushroom packaging material after dry at a temperature of 50~60 DEG C.
Example 1
800g water floatage is weighed, the fragment of 3cm2 is cut into after cleaning surface with clear water, 2L water is added in water floatage after chopping
In boil 2min, taken out after boiling, be added cooking machine in be beaten 5min, after mashing use filtered through gauze, obtain filter residue, in mass ratio 1:
4 mix filter residue with 5% hydrochloric acid solution of mass fraction, extract 3h at a temperature of 70 DEG C after mixing, filter residue is filtered to obtain after extraction, and
It is washed with deionized 3 times；Filter residue 1:8 in mass ratio after above-mentioned washing is mixed with 5% sodium hydroxide solution of mass fraction,
18h is extracted at a temperature of 40 DEG C, is filtered to get filtrate after extraction, filtrate is added in centrifugal separator, with the centrifugation of 4000r/min revolving speed
5min is separated, sediment is obtained after centrifugation, it is molten that 1 times of 10% sodium hypochlorite of mass fraction of sediment quality is added after being washed with water 2 times
Liquid, adjusting pH with 45% acetic acid solution of mass fraction after mixing evenly is 5, stirs 30min after adjusting, filters to obtain filter residue, and use matter
Amount 85% ethanol solution of score is put into baking oven after washing 3~5 times, and dry 6h, crushed after being dried cross 70 mesh at a temperature of 60 DEG C
Sieve, obtains water lettuce fiber, spare；5g carboxymethyl chitosan is weighed respectively and 8g xanthan gum is added in 500g deionized water, is put
Enter in water-bath, 60min is stirred after being heated to 45 DEG C, 10mL methanol is added after stirring, must be mixed after being uniformly mixed
Liquid；It is that 5g laccase is added in 3.5 NaAc_HAc buffer solutions to 500mLpH, stands 20min after mixing, is then centrifuged
It separates supernatant and to be fitted into flask, the spare water lettuce fiber of 8g is added into flask, is put into water-bath, is warming up to 35
DEG C, the above-mentioned mixed liquor of 100mL and 50mL dehydrated alcohol is added after being stirred to react 20min, is stirred to react 4h, reaction terminates rotation and steams
It is sent to original volume 50%, obtains concentrate；0.3g nano montmorillonite, 10g sorbierite and 3g mono succinate are added into above-mentioned concentrate
Glyceride obtains viscous fluid after being uniformly mixed, inflation film manufacturing machine is added after vacuum defoamation 20min and carries out blown film, cut, in 50 DEG C of temperature
The lower dry 40h of degree, can be obtained edible mushroom packaging material after dry.
The edible mushroom packaging material that the present invention is prepared packs edible mushroom, and the edible mushroom after packaging is in 25 DEG C of temperature
It can be put into refrigerator with fresh-keeping 8 days under degree, fresh-keeping 15 days at a temperature of 3 DEG C, the thickness for the packaging material that the present invention is prepared
For 0.102mm, tensile strength 15.5MPa, elongation at break 50%, aperture is 0.1 μm, and rate of perviousness is 3.024 × 10-
13g.cm/cm2·s·Pa。
Example 2
900g water floatage is weighed, the fragment of 4cm2 is cut into after cleaning surface with clear water, 2.5L is added in water floatage after chopping
3min is boiled in water, is taken out after boiling, is added in cooking machine and is beaten 8min, and filtered through gauze is used after mashing, obtains filter residue, in mass ratio
1:4 mixes filter residue with 5% hydrochloric acid solution of mass fraction, extracts 3.5h at a temperature of 73 DEG C after mixing, and filter is filtered to obtain after extraction
Slag, and be washed with deionized 4 times；Filter residue 1:8 in mass ratio after above-mentioned washing is mixed with 5% sodium hydroxide solution of mass fraction
It closes, 20h is extracted at a temperature of 45 DEG C, is filtered to get filtrate after extraction, filtrate is added in centrifugal separator, turned with 4500r/min
Speed centrifuge separation 6min, obtains sediment, 2 times of 10% hypochlorous acid of mass fraction of sediment quality is added after being washed with water 3 times after centrifugation
Sodium solution, adjusting pH with 45% acetic acid solution of mass fraction after mixing evenly is 5.5, stirs 40min after adjusting, filters to obtain filter residue,
And be put into baking oven after with 85% ethanol solution of mass fraction washing 4 times, dry 7h, crushed after being dried cross 75 at a temperature of 65 DEG C
Mesh obtains water lettuce fiber, spare；8g carboxymethyl chitosan is weighed respectively and 10g xanthan gum is added in 550g deionized water,
It is put into water-bath, 70min is stirred after being heated to 50 DEG C, 13mL methanol is added after stirring, must be mixed after being uniformly mixed
Close liquid；It is that 6g laccase is added in 3.7 NaAc_HAc buffer solutions to 500~600mLpH, stands 25min after mixing,
It is then centrifugated supernatant and to be fitted into flask, the spare water lettuce fiber of 9g is added into flask, is put into water-bath,
40 DEG C are warming up to, the above-mentioned mixed liquor of 110mL and 80mL dehydrated alcohol is added after being stirred to react 30min, is stirred to react 5h, reaction knot
Beam rotary evaporation obtains concentrate to original volume 55%；0.4g nano montmorillonite, 13g sorbierite and 4g are added into above-mentioned concentrate
Succinylated monoglyceride obtains viscous fluid after being uniformly mixed, inflation film manufacturing machine is added after vacuum defoamation 25min and carries out blown film, cut,
Dry 45h, can be obtained edible mushroom packaging material after dry at a temperature of 55 DEG C.
The edible mushroom packaging material that the present invention is prepared packs edible mushroom, and the edible mushroom after packaging is in 25 DEG C of temperature
It can be put into refrigerator with fresh-keeping 9 days under degree, fresh-keeping 17 days at a temperature of 4 DEG C, the thickness for the packaging material that the present invention is prepared
For 0.108mm, tensile strength 16.2MPa, elongation at break 60%, aperture is 0.2 μm, and rate of perviousness is 3.258 × 10-
13g.cm/cm2·s·Pa。
Example 3
1000g water floatage is weighed, the fragment of 5cm2 is cut into after cleaning surface with clear water, 3L water is added in water floatage after chopping
In boil 4min, taken out after boiling, be added cooking machine in be beaten 10min, after mashing use filtered through gauze, obtain filter residue, in mass ratio
1:4 mixes filter residue with 5% hydrochloric acid solution of mass fraction, extracts 4h at a temperature of 75 DEG C after mixing, filter residue is filtered to obtain after extraction,
And it is washed with deionized 5 times；Filter residue 1:8 in mass ratio after above-mentioned washing is mixed with 5% sodium hydroxide solution of mass fraction,
Extract 22h at 50 °C, filter to get filtrate after extraction, by filtrate be added centrifugal separator in, with 5000r/min revolving speed from
The heart separates 8min, and sediment is obtained after centrifugation, and it is molten that 3 times of 10% sodium hypochlorite of mass fraction of sediment quality are added after being washed with water 4 times
Liquid, adjusting pH with 45% acetic acid solution of mass fraction after mixing evenly is 6, stirs 50min after adjusting, filters to obtain filter residue, and use matter
Amount 85% ethanol solution of score is put into baking oven after washing 5 times, and dry 8h, crushed after being dried cross 80 meshes at a temperature of 70 DEG C,
Water lettuce fiber is obtained, it is spare；10g carboxymethyl chitosan is weighed respectively and 12g xanthan gum is added in 600g deionized water, is put into
In water-bath, it is stirred 80min after being heated to 55 DEG C, 15mL methanol is added after stirring, mixed liquor is obtained after being uniformly mixed；
It is that 7g laccase is added in 4.0 NaAc_HAc buffer solutions to 600mLpH, stands 30min after mixing, then centrifugation point
From obtaining supernatant and being fitted into flask, the spare water lettuce fiber of 10g is added into flask, is put into water-bath, is warming up to 45
DEG C, the above-mentioned mixed liquor of 120mL and 100mL dehydrated alcohol is added after being stirred to react 40min, is stirred to react 6h, reaction terminates rotation
It is evaporated to original volume 60%, obtains concentrate；0.5g nano montmorillonite, 15g sorbierite and 3~5g amber are added into above-mentioned concentrate
Amber acid monoglyceride obtains viscous fluid after being uniformly mixed, inflation film manufacturing machine is added after vacuum defoamation 30min and carries out blown film, cut,
Dry 50h, can be obtained edible mushroom packaging material after dry at a temperature of 60 DEG C.
The edible mushroom packaging material that the present invention is prepared packs edible mushroom, and the edible mushroom after packaging is in 26 DEG C of temperature
It can be put into refrigerator with fresh-keeping 10 days under degree, fresh-keeping 20 days at a temperature of 3~5 DEG C, the packaging material that the present invention is prepared
With a thickness of 0.115mm, tensile strength 16.7MPa, elongation at break 70%, aperture is 0.3 μm, rate of perviousness is 3.546 ×
10-13g.cm/cm2·s·Pa。
Claims (1)
1. a kind of modified water lettuce fiber of laccase prepares edible mushroom packaging material, it is characterised in that use following preparation method system
, specific steps are as follows:
(1) 800~1000g water floatage is weighed, the fragment of 3~5cm2 is cut into after cleaning surface with clear water, water after chopping is floated
Lotus leaf, which is added in 2~3L water, boils 2~4min, takes out after boiling, is added in cooking machine and is beaten 5~10min, use gauze after mashing
Filtering, obtains filter residue, 1:4 in mass ratio mixes filter residue with 5% hydrochloric acid solution of mass fraction, after mixing at a temperature of 70~75 DEG C
3~4h is extracted, filter residue is filtered to obtain after extraction, and be washed with deionized 3~5 times；
(2) filter residue 1:8 in mass ratio after above-mentioned washing is mixed with 5% sodium hydroxide solution of mass fraction, in 40~50 DEG C of temperature
18~22h of lower extraction, filters to get filtrate after extraction, by filtrate be added centrifugal separator in, with 4000~5000r/min revolving speed from
The heart separates 5~8min, and sediment is obtained after centrifugation, and 1~3 times of mass fraction 10% of sediment quality is added after being washed with water 2~4 times
Liquor natrii hypochloritis, adjusting pH with 45% acetic acid solution of mass fraction after mixing evenly is 5~6, and 30~50min is stirred after adjusting,
Filter residue is filtered to obtain, and is put into baking oven after washing 3~5 times with 85% ethanol solution of mass fraction, it is dry at a temperature of 60~70 DEG C
6~8h, crushed after being dried cross 70~80 meshes, obtain water lettuce fiber, spare；
(3) 5~10g carboxymethyl chitosan is weighed respectively and 8~12g xanthan gum is added in 500~600g deionized water, is put into
In water-bath, it is stirred 60~80min after being heated to 45~55 DEG C, 10~15mL methanol is added after stirring, is stirred
Mixed liquor is obtained after even；
It (4) is that 5~7g laccase is added in 3.5~4.0 NaAc_HAc buffer solutions to 500~600mLpH, after mixing
20~30min is stood, is then centrifugated supernatant and to be fitted into flask, it is spare that 8~10g step (2) are added into flask
Water lettuce fiber, be put into water-bath, be warming up to 35~45 DEG C, be stirred to react after 20~40min and be added on 100~120mL
Mixed liquor and 50~100mL dehydrated alcohol are stated, 4~6h is stirred to react, reaction terminates rotary evaporation to original volume 50~60%, obtains
Concentrate；
(5) 0.3~0.5g nano montmorillonite, 10~15g sorbierite and 3~5g mono succinate glycerol are added into above-mentioned concentrate
Ester obtains viscous fluid after being uniformly mixed, inflation film manufacturing machine is added after 20~30min of vacuum defoamation and carries out blown film, cut, 50~60
Dry 40~50h, can be obtained edible mushroom packaging material after dry at a temperature of DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309896.6A CN109320786A (en) | 2016-12-11 | 2016-12-11 | A kind of edible mushroom packaging material |
Applications Claiming Priority (2)
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| CN106674610B (en) | 2019-03-01 |
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