CN105968826A - Preparation method of environment-friendly edible food packaging film - Google Patents
Preparation method of environment-friendly edible food packaging film Download PDFInfo
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- CN105968826A CN105968826A CN201610509629.8A CN201610509629A CN105968826A CN 105968826 A CN105968826 A CN 105968826A CN 201610509629 A CN201610509629 A CN 201610509629A CN 105968826 A CN105968826 A CN 105968826A
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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
- C08L89/00—Compositions of proteins; Compositions of derivatives thereof
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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
- B65D65/463—Edible packaging materials
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- C—CHEMISTRY; METALLURGY
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- 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
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- 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
- C08J2389/00—Characterised by the use of proteins; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- 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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- 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
- C08J2489/00—Characterised by the use of proteins; Derivatives thereof
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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
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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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
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention relates to a preparation method of an environment-friendly edible food packaging film and belongs to the technical filed of food packaging films. Aiming at the problems that a soybean protein isolate film is high in bacterium and mold generation possibility and relatively short in quality guarantee period, the invention provides a preparation method of an environment-friendly edible food packaging film. The preparation method comprises the following steps: performing steam blasting on sunflower seed shells which serve as raw materials, decoloring the raw materials with sodium hypochlorite, and performing alkali fusion and alcohol extraction, thereby obtaining sunflower seed shell fibers; then enable the sunflower seed shell fibers to react with sulfuric acid, thereby obtaining sunflower seed shell nano fibers with rod-shaped structures; mixing the sunflower seed shell nano fibers with soybean protein isolate and corn starch; preparing a mixed solution by utilizing rich antioxidant ingredients in tomato peel slags as an additive; performing high-voltage pulse electric field treatment so as to change the function and structure of protein; and adding a plasticizer, namely propanetriol, performing debubbling, and performing film casting, thereby obtaining the environment-friendly edible food packaging film.
Description
Technical field
The present invention relates to the preparation method of a kind of environment protection type edible food package film, belong to packaging for foodstuff technical field of membrane.
Background technology
Environmental pollution is day by day serious, and environmentally friendly biomaterial increasingly comes into one's own.Wherein, the features such as edible packing material is pollution-free with it, raw material sources are extensive, edible, become the focus of the area research such as food, drug packaging.In recent years, the edible film with natural macromolecular material as base material, because having the feature of environmental protection, degradable, nonhazardous, had had been subjected to the favor of more and more people.
Nano-cellulose and soybean protein isolate are all Eco-power renewable products, and all have degradable, the characteristic of high safety and special alimentary health-care function, and therefore they are to prepare the raw material that edible film is ideal.Nano-cellulose has the excellent properties such as high-crystallinity, high intensity, high-specific surface area, environmental friendliness and low cost, its molecular structure also exists substantial amounts of-OH, it is easily formed intermolecular and intramolecular hydrogen bond when being blended with other natural macromoleculars, thus the structure of intermingling material can be made more stable.Soybean separation protein tunica albuginea is a kind of with soybean protein isolate, new type natural degradable biological sill for film forming matrix, its abundant raw material source and good film-forming property, thus in fields such as packaging for foodstuff, biological medicine and active material researchs, there is wide development and application prospect.But, the easy breed bacteria of soybean protein film and mycete, the shelf-life is relatively short.Therefore, physical characteristic and the stability of improving film further are to improve urgent problem in film using effect.
Fructus Lycopersici esculenti is modal a kind of vegetable, it directly can eat as fruit, can also be as processing raw material, in Europe and the U.S., Fructus Lycopersici esculenti reaches 33,000,000 tons usually used as the total output of raw material world's plantation Fructus Lycopersici esculenti in 2012 of processing fruit juice, fruit jam etc., the Fructus Lycopersici esculenti of the most about 1/4th is as processing raw material, and creates substantial amounts of tomato peel in the course of processing.Have the composition of non-oxidizability, such as phenolic compound, vitamin e, lycopene etc. in peel of Fructus Lycopersici esculenti containing many, in eggplant peel, the amount containing the antioxidant content such as phenolic compound, lycopene is more than in tomato pulp.Containing more antioxidant content in tomato peel, as the raw material of packaging material for food, there is bigger real value.
Summary of the invention
The technical problem to be solved: for the easy breed bacteria of soybean separation protein tunica albuginea and mycete, the problem that the shelf-life is relatively short, the invention provides the preparation method of a kind of environment protection type edible food package film.The present invention uses Semen Helianthi shell to be raw material, through steam explosion, sodium hypochlorite decolours, after the molten alcohol extraction of alkali, prepare Semen Helianthi case fibre, then with sulfuric acid reaction, prepare club shaped structure sunflower seed shell nanofiber, with soybean protein isolate, corn starch mixes, and non-oxidizability composition abundant in recycling tomato peel, as additive, is prepared as mixed liquor, pass through high voltage pulse electric field processing, change function and the structure of protein, add plasticizer glycerol, after deaeration, casting film-forming, prepares environment protection type edible food package film.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
null(1) 30 ~ 50g sunflower seed shell is weighed，Add in pulverizer and pulverize，Cross 100 mesh sieves，Sunflower seed shell powder after sieving adds in steam explosion tank，1.2 ~ 1.7MPa saturated vapor it is passed through in steam explosion tank，After keeping 3 ~ 5min, moment opens steam explosion tank valve，Take out，Being immersed in 500 ~ 800mL temperature is 40 ~ 50min in 80 ~ 85 DEG C of deionized waters，Take out，Adding 300 ~ 400mL mass fraction is in 0.5% liquor natrii hypochloritis，At 60 ~ 70 DEG C under water bath with thermostatic control，Decolouring 1 ~ 2h，Filter，It is in 2% sodium hydroxide solution that filtering residue is immersed in 100 ~ 200mL mass fraction，Under 80 ~ 85 DEG C of waters bath with thermostatic control，Extraction 3 ~ 4h，It is neutrality with dehydrated alcohol and deionized water wash filtering residue to cleaning mixture，Proceed to 105 ~ 110 DEG C of drying baker are dried to constant weight，Obtain sunflower seed shell fiber；
(2) weigh 2 ~ 3g above-mentioned sunflower seed shell cellulose adding 20 ~ 30mL mass fraction is in 50% sulfuric acid solution, under 40 ~ 50 DEG C of waters bath with thermostatic control, after 300 ~ 400r/min stirring 1 ~ 2h, add 300 ~ 500mL deionized water, disperse 30 ~ 40min with 500W ultrasonic echography, load in bag filter, with deionized water dialysis to pH of mixed in bag be neutrality, mixed liquor is added lyophilization 1 ~ 3 day in vacuum freezing drying oven, obtains club shaped structure sunflower seed shell nanofiber, standby；
(3) 20 ~ 30g fresh tomato skin slag is weighed, adding 200 ~ 300mL mass fraction is in 0.5% saleratus solution, 3 ~ 5min is extracted at 90 ~ 95 DEG C, filter, filtering residue is placed in ice-water bath and is cooled to room temperature, proceed to 40 ~ 50 DEG C of air dry ovens are dried to constant weight, add pulverizer and pulverize, cross 200 mesh sieves, obtain tomato peel powder；
null(4) 3 ~ 5g soybean protein isolate is weighed，Add in 75 ~ 85mL deionized water，20 ~ 30min is stirred with 500 ~ 600r/min，Add 3 ~ 5g corn starch，Sunflower seed shell nanofiber prepared by 0.3 ~ 0.5g above-mentioned steps (2)，2 ~ 4g above-mentioned tomato peel powder，And disperse 20 ~ 30min with high speed homogenization device，Mixed liquor is passed through high-pressure pulse electric，Control field intensity is 30 ~ 32kV/cm，Umber of pulse is 6 ~ 8，To adding 1 ~ 2g glycerol in the mixed liquor that high-voltage pulse processes，Under 60 ~ 70 DEG C of waters bath with thermostatic control，With 300 ~ 400r/min agitating heating 20 ~ 30min，Proceeding to vacuum is in 0.08 ~ 0.09MPa vacuum tank，Standing and defoaming 2 ~ 3h，Obtain film forming liquid，By film forming liquid casting film-forming on Teflon mould，10 ~ 12h it is dried in 50 ~ 60 DEG C of constant-temperature tables，Take off film，Obtain environment protection type edible food package film.
The application process of the present invention is: the environment protection type edible food package film coated foods present invention prepared, and extends 1 ~ February of effective period of food quality, with after packaging film soil bury 15 ~ 20 days, degradation rate is 80 ~ 90%.
The method have the benefit that:
(1) the environment protection type edible food package film hot strength that prepared by the present invention is high, and elongation at break is good, and intensification degradation property is outstanding.
(2) production technology of the present invention is simple, green, environmental protection.
Detailed description of the invention
nullWeigh 30 ~ 50g sunflower seed shell，Add in pulverizer and pulverize，Cross 100 mesh sieves，Sunflower seed shell powder after sieving adds in steam explosion tank，1.2 ~ 1.7MPa saturated vapor it is passed through in steam explosion tank，After keeping 3 ~ 5min, moment opens steam explosion tank valve，Take out，Being immersed in 500 ~ 800mL temperature is 40 ~ 50min in 80 ~ 85 DEG C of deionized waters，Take out，Adding 300 ~ 400mL mass fraction is in 0.5% liquor natrii hypochloritis，At 60 ~ 70 DEG C under water bath with thermostatic control，Decolouring 1 ~ 2h，Filter，It is in 2% sodium hydroxide solution that filtering residue is immersed in 100 ~ 200mL mass fraction，Under 80 ~ 85 DEG C of waters bath with thermostatic control，Extraction 3 ~ 4h，It is neutrality with dehydrated alcohol and deionized water wash filtering residue to cleaning mixture，Proceed to 105 ~ 110 DEG C of drying baker are dried to constant weight，Obtain sunflower seed shell fiber；Weigh 2 ~ 3g above-mentioned sunflower seed shell cellulose adding 20 ~ 30mL mass fraction is in 50% sulfuric acid solution, under 40 ~ 50 DEG C of waters bath with thermostatic control, after 300 ~ 400r/min stirring 1 ~ 2h, add 300 ~ 500mL deionized water, disperse 30 ~ 40min with 500W ultrasonic echography, load in bag filter, with deionized water dialysis to pH of mixed in bag be neutrality, mixed liquor is added lyophilization 1 ~ 3 day in vacuum freezing drying oven, obtains club shaped structure sunflower seed shell nanofiber, standby；Weigh 20 ~ 30g fresh tomato skin slag, adding 200 ~ 300mL mass fraction is in 0.5% saleratus solution, 3 ~ 5min is extracted at 90 ~ 95 DEG C, filter, filtering residue is placed in ice-water bath and is cooled to room temperature, proceed to 40 ~ 50 DEG C of air dry ovens are dried to constant weight, add pulverizer and pulverize, cross 200 mesh sieves, obtain tomato peel powder；nullWeigh 3 ~ 5g soybean protein isolate，Add in 75 ~ 85mL deionized water，20 ~ 30min is stirred with 500 ~ 600r/min，Add 3 ~ 5g corn starch，The sunflower seed shell nanofiber of the above-mentioned preparation of 0.3 ~ 0.5g，2 ~ 4g above-mentioned tomato peel powder，And disperse 20 ~ 30min with high speed homogenization device，Mixed liquor is passed through high-pressure pulse electric，Control field intensity is 30 ~ 32kV/cm，Umber of pulse is 6 ~ 8，To adding 1 ~ 2g glycerol in the mixed liquor that high-voltage pulse processes，Under 60 ~ 70 DEG C of waters bath with thermostatic control，With 300 ~ 400r/min agitating heating 20 ~ 30min，Proceeding to vacuum is in 0.08 ~ 0.09MPa vacuum tank，Standing and defoaming 2 ~ 3h，Obtain film forming liquid，By film forming liquid casting film-forming on Teflon mould，10 ~ 12h it is dried in 50 ~ 60 DEG C of constant-temperature tables，Take off film，Obtain environment protection type edible food package film.
Example 1
Weigh 30g sunflower seed shell, add in pulverizer and pulverize, cross 100 mesh sieves, sunflower seed shell powder after sieving adds in steam explosion tank, 1.2MPa saturated vapor it is passed through in steam explosion tank, after keeping 3min, moment opens steam explosion tank valve, take out, being immersed in 500mL temperature is 40min in 80 DEG C of deionized waters, take out, adding 300mL mass fraction is in 0.5% liquor natrii hypochloritis, at 60 DEG C under water bath with thermostatic control, decolouring 1h, filter, it is in 2% sodium hydroxide solution that filtering residue is immersed in 100mL mass fraction, under 80 DEG C of waters bath with thermostatic control, extraction 3h, it is neutrality with dehydrated alcohol and deionized water wash filtering residue to cleaning mixture, proceed to 105 DEG C of drying baker are dried to constant weight, obtain sunflower seed shell fiber；Weigh 2g above-mentioned sunflower seed shell cellulose adding 20mL mass fraction is in 50% sulfuric acid solution, under 40 DEG C of waters bath with thermostatic control, after 300r/min stirring 1h, add 300mL deionized water, disperse 30min with 500W ultrasonic echography, load in bag filter, with deionized water dialysis to pH of mixed in bag be neutrality, mixed liquor is added lyophilization 1 day in vacuum freezing drying oven, obtains club shaped structure sunflower seed shell nanofiber, standby；Weighing 20g fresh tomato skin slag, adding 200mL mass fraction is in 0.5% saleratus solution, extracts 3min at 90 DEG C, filter, filtering residue is placed in ice-water bath and is cooled to room temperature, proceed to 40 DEG C of air dry ovens are dried to constant weight, add pulverizer to pulverize, cross 200 mesh sieves, obtain tomato peel powder；Weigh 3g soybean protein isolate, add in 75mL deionized water, 20min is stirred with 500r/min, add 3g corn starch, the sunflower seed shell nanofiber of the above-mentioned preparation of 0.3g, 2g above-mentioned tomato peel powder, and disperse 20min with high speed homogenization device, mixed liquor is passed through high-pressure pulse electric, control field intensity is 30kV/cm, umber of pulse is 6, to adding 1g glycerol in the mixed liquor that high-voltage pulse processes, under 60 DEG C of waters bath with thermostatic control, with 300r/min agitating heating 20min, proceeding to vacuum is in 0.08MPa vacuum tank, standing and defoaming 2h, obtain film forming liquid, by film forming liquid casting film-forming on Teflon mould, 10h it is dried in 50 DEG C of constant-temperature tables, take off film, obtain environment protection type edible food package film.
The application process of the present invention is: the environment protection type edible food package film coated foods present invention prepared, and extends effective period of food quality January, with after packaging film soil bury 15 days, degradation rate is 80%.
Example 2
Weigh 40g sunflower seed shell, add in pulverizer and pulverize, cross 100 mesh sieves, sunflower seed shell powder after sieving adds in steam explosion tank, 1.5MPa saturated vapor it is passed through in steam explosion tank, after keeping 4min, moment opens steam explosion tank valve, take out, being immersed in 600mL temperature is 45min in 82 DEG C of deionized waters, take out, adding 350mL mass fraction is in 0.5% liquor natrii hypochloritis, at 65 DEG C under water bath with thermostatic control, decolouring 1.5h, filter, it is in 2% sodium hydroxide solution that filtering residue is immersed in 150mL mass fraction, under 82 DEG C of waters bath with thermostatic control, extraction 3.5h, it is neutrality with dehydrated alcohol and deionized water wash filtering residue to cleaning mixture, proceed to 108 DEG C of drying baker are dried to constant weight, obtain sunflower seed shell fiber；Weigh 2.5g above-mentioned sunflower seed shell cellulose adding 25mL mass fraction is in 50% sulfuric acid solution, under 45 DEG C of waters bath with thermostatic control, after 350r/min stirring 1.5h, add 400mL deionized water, disperse 35min with 500W ultrasonic echography, load in bag filter, with deionized water dialysis to pH of mixed in bag be neutrality, mixed liquor is added lyophilization 2 days in vacuum freezing drying oven, obtains club shaped structure sunflower seed shell nanofiber, standby；Weighing 25g fresh tomato skin slag, adding 250mL mass fraction is in 0.5% saleratus solution, extracts 4min at 92 DEG C, filter, filtering residue is placed in ice-water bath and is cooled to room temperature, proceed to 45 DEG C of air dry ovens are dried to constant weight, add pulverizer to pulverize, cross 200 mesh sieves, obtain tomato peel powder；nullWeigh 4g soybean protein isolate，Add in 80mL deionized water，25min is stirred with 550r/min，Add 4g corn starch，The sunflower seed shell nanofiber of the above-mentioned preparation of 0.4g，3g above-mentioned tomato peel powder，And disperse 25min with high speed homogenization device，Mixed liquor is passed through high-pressure pulse electric，Control field intensity is 31kV/cm，Umber of pulse is 7，To adding 1.5g glycerol in the mixed liquor that high-voltage pulse processes，Under 65 DEG C of waters bath with thermostatic control，With 350r/min agitating heating 25min，Proceeding to vacuum is in 0.08MPa vacuum tank，Standing and defoaming 2.5h，Obtain film forming liquid，By film forming liquid casting film-forming on Teflon mould，11h it is dried in 55 DEG C of constant-temperature tables，Take off film，Obtain environment protection type edible food package film.
The application process of the present invention is: the environment protection type edible food package film coated foods present invention prepared, and extends effective period of food quality 1.5 months, and the packaging film soil after using buries 18 days, and degradation rate is 85%.
Example 3
Weigh 50g sunflower seed shell, add in pulverizer and pulverize, cross 100 mesh sieves, sunflower seed shell powder after sieving adds in steam explosion tank, 1.7MPa saturated vapor it is passed through in steam explosion tank, after keeping 5min, moment opens steam explosion tank valve, take out, being immersed in 800mL temperature is 50min in 85 DEG C of deionized waters, take out, adding 400mL mass fraction is in 0.5% liquor natrii hypochloritis, at 70 DEG C under water bath with thermostatic control, decolouring 2h, filter, it is in 2% sodium hydroxide solution that filtering residue is immersed in 200mL mass fraction, under 85 DEG C of waters bath with thermostatic control, extraction 4h, it is neutrality with dehydrated alcohol and deionized water wash filtering residue to cleaning mixture, proceed to 110 DEG C of drying baker are dried to constant weight, obtain sunflower seed shell fiber；Weigh 3g above-mentioned sunflower seed shell cellulose adding 30mL mass fraction is in 50% sulfuric acid solution, under 50 DEG C of waters bath with thermostatic control, after 400r/min stirring 2h, add 500mL deionized water, disperse 40min with 500W ultrasonic echography, load in bag filter, with deionized water dialysis to pH of mixed in bag be neutrality, mixed liquor is added lyophilization 3 days in vacuum freezing drying oven, obtains club shaped structure sunflower seed shell nanofiber, standby；Weighing 30g fresh tomato skin slag, adding 300mL mass fraction is in 0.5% saleratus solution, extracts 5min at 95 DEG C, filter, filtering residue is placed in ice-water bath and is cooled to room temperature, proceed to 50 DEG C of air dry ovens are dried to constant weight, add pulverizer to pulverize, cross 200 mesh sieves, obtain tomato peel powder；Weigh 5g soybean protein isolate, add in 85mL deionized water, 30min is stirred with 600r/min, add 5g corn starch, the sunflower seed shell nanofiber of the above-mentioned preparation of 0.5g, 4g above-mentioned tomato peel powder, and disperse 30min with high speed homogenization device, mixed liquor is passed through high-pressure pulse electric, control field intensity is 32kV/cm, umber of pulse is 8, to adding 2g glycerol in the mixed liquor that high-voltage pulse processes, under 70 DEG C of waters bath with thermostatic control, with 400r/min agitating heating 30min, proceeding to vacuum is in 0.09MPa vacuum tank, standing and defoaming 3h, obtain film forming liquid, by film forming liquid casting film-forming on Teflon mould, 12h it is dried in 60 DEG C of constant-temperature tables, take off film, obtain environment protection type edible food package film.
The application process of the present invention is: the environment protection type edible food package film coated foods present invention prepared, and extends effective period of food quality February, with after packaging film soil bury 20 days, degradation rate is 90%.
Claims (1)
1. the preparation method of an environment protection type edible food package film, it is characterised in that concrete preparation process is:
null(1) 30 ~ 50g sunflower seed shell is weighed，Add in pulverizer and pulverize，Cross 100 mesh sieves，Sunflower seed shell powder after sieving adds in steam explosion tank，1.2 ~ 1.7MPa saturated vapor it is passed through in steam explosion tank，After keeping 3 ~ 5min, moment opens steam explosion tank valve，Take out，Being immersed in 500 ~ 800mL temperature is 40 ~ 50min in 80 ~ 85 DEG C of deionized waters，Take out，Adding 300 ~ 400mL mass fraction is in 0.5% liquor natrii hypochloritis，At 60 ~ 70 DEG C under water bath with thermostatic control，Decolouring 1 ~ 2h，Filter，It is in 2% sodium hydroxide solution that filtering residue is immersed in 100 ~ 200mL mass fraction，Under 80 ~ 85 DEG C of waters bath with thermostatic control，Extraction 3 ~ 4h，It is neutrality with dehydrated alcohol and deionized water wash filtering residue to cleaning mixture，Proceed to 105 ~ 110 DEG C of drying baker are dried to constant weight，Obtain sunflower seed shell fiber；
(2) weigh 2 ~ 3g above-mentioned sunflower seed shell cellulose adding 20 ~ 30mL mass fraction is in 50% sulfuric acid solution, under 40 ~ 50 DEG C of waters bath with thermostatic control, after 300 ~ 400r/min stirring 1 ~ 2h, add 300 ~ 500mL deionized water, disperse 30 ~ 40min with 500W ultrasonic echography, load in bag filter, with deionized water dialysis to pH of mixed in bag be neutrality, mixed liquor is added lyophilization 1 ~ 3 day in vacuum freezing drying oven, obtains club shaped structure sunflower seed shell nanofiber, standby；
(3) 20 ~ 30g fresh tomato skin slag is weighed, adding 200 ~ 300mL mass fraction is in 0.5% saleratus solution, 3 ~ 5min is extracted at 90 ~ 95 DEG C, filter, filtering residue is placed in ice-water bath and is cooled to room temperature, proceed to 40 ~ 50 DEG C of air dry ovens are dried to constant weight, add pulverizer and pulverize, cross 200 mesh sieves, obtain tomato peel powder；
null(4) 3 ~ 5g soybean protein isolate is weighed，Add in 75 ~ 85mL deionized water，20 ~ 30min is stirred with 500 ~ 600r/min，Add 3 ~ 5g corn starch，Sunflower seed shell nanofiber prepared by 0.3 ~ 0.5g above-mentioned steps (2)，2 ~ 4g above-mentioned tomato peel powder，And disperse 20 ~ 30min with high speed homogenization device，Mixed liquor is passed through high-pressure pulse electric，Control field intensity is 30 ~ 32kV/cm，Umber of pulse is 6 ~ 8，To adding 1 ~ 2g glycerol in the mixed liquor that high-voltage pulse processes，Under 60 ~ 70 DEG C of waters bath with thermostatic control，With 300 ~ 400r/min agitating heating 20 ~ 30min，Proceeding to vacuum is in 0.08 ~ 0.09MPa vacuum tank，Standing and defoaming 2 ~ 3h，Obtain film forming liquid，By film forming liquid casting film-forming on Teflon mould，10 ~ 12h it is dried in 50 ~ 60 DEG C of constant-temperature tables，Take off film，Obtain environment protection type edible food package film.
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| CN201610509629.8A CN105968826A (en) | 2016-07-03 | 2016-07-03 | Preparation method of environment-friendly edible food packaging film |
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| CN (1) | CN105968826A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106496649A (en) * | 2016-10-29 | 2017-03-15 | 袁春华 | A kind of preparation method of medicine field degradable function mulch film |
| CN108610517A (en) * | 2018-05-08 | 2018-10-02 | 昆明理工大学 | A kind of preparation method of nano-cellulose enhancing hemicellulose group compound film |
| JP2019529635A (en) * | 2016-09-13 | 2019-10-17 | エスピーシー サンフラワー プラスティック コンパウンド ゲーエムベーハーＳｐｃ Ｓｕｎｆｌｏｗｅｒ Ｐｌａｓｔｉｃ Ｃｏｍｐｏｕｎｄ Ｇｍｂｈ | Method for producing bioplastic granules based on sunflower seed husk / seed hull material |
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2016
- 2016-07-03 CN CN201610509629.8A patent/CN105968826A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019529635A (en) * | 2016-09-13 | 2019-10-17 | エスピーシー サンフラワー プラスティック コンパウンド ゲーエムベーハーＳｐｃ Ｓｕｎｆｌｏｗｅｒ Ｐｌａｓｔｉｃ Ｃｏｍｐｏｕｎｄ Ｇｍｂｈ | Method for producing bioplastic granules based on sunflower seed husk / seed hull material |
| US11312040B2 (en) | 2016-09-13 | 2022-04-26 | Spc Sunflower Plastic Compound Gmbh | Method of producing a bioplastic granulate based on sunflower seed shells/sunflower seed hull material on the one hand and a plastic material on the other hand |
| JP7129971B2 (en) | 2016-09-13 | 2022-09-02 | エスピーシー サンフラワー プラスティック コンパウンド ゲーエムベーハー | Method for producing bioplastic granules based on sunflower seed husk/hull material |
| CN106496649A (en) * | 2016-10-29 | 2017-03-15 | 袁春华 | A kind of preparation method of medicine field degradable function mulch film |
| CN108610517A (en) * | 2018-05-08 | 2018-10-02 | 昆明理工大学 | A kind of preparation method of nano-cellulose enhancing hemicellulose group compound film |
| CN108610517B (en) * | 2018-05-08 | 2020-12-15 | 昆明理工大学 | Preparation method of nanocellulose-reinforced hemicellulose-based composite membrane |
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