CN106742701A - A kind of preparation method of antibacterial high-strength type edible packaging film - Google Patents
A kind of preparation method of antibacterial high-strength type edible packaging film Download PDFInfo
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- CN106742701A CN106742701A CN201611211701.5A CN201611211701A CN106742701A CN 106742701 A CN106742701 A CN 106742701A CN 201611211701 A CN201611211701 A CN 201611211701A CN 106742701 A CN106742701 A CN 106742701A
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Classifications
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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
Abstract
The present invention relates to a kind of preparation method of antibacterial high-strength type edible packaging film, belong to edible packaging technical field of membrane.After fresh albumen is stirred into egg white solution by the present invention, citric acid solution is added drop-wise in dispersion egg white solution and is mixed, and in heating, modified extract solution is obtained after centrifugation, fresh silk is taken to mix with sodium carbonate liquor, filter cake is collected after the heating obtains boiled silk, and mix to obtain silk fibroin protein solution with lithium-bromide solution, modified extract solution is mixed with silk fibroin protein solution again, under ultrafiltration desalting processing, collect ultrafiltrate and dry, mix with Tris HCl buffer solutions after milling, heat to obtain film base fluid, then compound with glycerine and ultrasonic disperse, deaeration, coating, dry, a kind of antibacterial high-strength type edible packaging film is obtained by taking off film, edible packaging film prepared by the present invention has barrier property good, good mechanical performance, dissolution velocity is fast, and effectively suppress the breeding of microorganism, extend the shelf life of food.
Description
Technical field
The present invention relates to a kind of preparation method of antibacterial high-strength type edible packaging film, belong to edible packaging membrane technology neck
Domain.
Background technology
With the enhancing that the high speed development and popular green consumption of social economy are realized, the environmental pollution that plastics package is caused
Problem and the harm brought to health have been increasingly subject to the attention of international community.In face of severe pollution and safety problem,
Various countries start to strive to find " green package " material to replace plastics package, to reduce " white pollution ", improve packaging safety
Property.So-called " green package ", is to refer to recycling, regeneration or can be rotted in nature degraded, and in the whole of product
The packaging for meeting continuable development principle of public hazards is not caused in individual life cycle to human body and environment.
Edible packing membrane refers to edible natural material（Such as protein, polysaccharide, cellulose and its derivates）For
Raw material, the film with functional characteristic formed by the interaction between different molecular can be by parcel, coating, microcapsules
Food surface is covered in etc. form（Or it is internal）, the infiltration of aqueous vapor, other gases or various solutes can be intercepted, and play protection
The thin layer of effect, prevents food from the change of the aspects such as local flavor, texture occurring in transporting procedures, and then ensures the quality of food,
Extension Food Shelf-life, or reduce packing cost.Thus had broad application prospects in terms of food industry.But to being at present
Only, almost no edible packing membrane energy industrialized production and business application is realized, its most important reason is edible film machinery
Intensity is not enough and without heat sealability, while edible film is compared with conventional plastic packaging etc., the scarce capacity of its isolation microorganism is made
When being used for packaging for foodstuff, there is the risk of microorganism pollution.
The content of the invention
The present invention solves the technical problem of：There is mechanical strength for traditional edible packaging film low, completely cut off micro-
Biological scarce capacity, when being used as packaging for foodstuff, there is the problem of the risk of microorganism pollution, there is provided one kind is by extracting
Egg white solution rich in lysozyme is compounded with the fibroin albumen of high-strength performance, by lysozyme in refined egg white solution to biosolubilization
With destruction, while the viscoelastic fibroin albumen of composite high-strength, make bacterial adhesion and loading while substantially reduce, effectively enhancing
The method of edible film use intensity, after fresh albumen is stirred into egg white solution by the present invention, citric acid solution is added drop-wise to point
Mixing in egg white solution is dissipated, and modified extract solution is obtained after heating, centrifugation, taken fresh silk and mix with sodium carbonate liquor,
Filter cake is collected after the heating and obtains boiled silk, and mix to obtain silk fibroin protein solution with lithium-bromide solution, then by above-mentioned modified extraction
Liquid mixes with silk fibroin protein solution, under ultrafiltration desalting processing, collects ultrafiltrate and drying, freeze-dried mixed powder of milling to obtain, will be with
After the mixing of Tris-HCl buffer solutions, heating film base fluid, then compound with glycerine and ultrasonic disperse, deaeration, coating, dry,
A kind of antibacterial high-strength type edible packaging film is prepared into by taking off film, edible packaging film prepared by the present invention has barrier property
Good, good mechanical performance, dissolution velocity are fast, and effectively suppress the breeding of microorganism, extend the shelf life of food.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）Fresh albumen is collected, 25~30min of mixing is stirred under 450~600r/min, after the completion of mixing to be mixed, collected
Dispersion egg white solution, then in mass ratio 1:10, the citric acid solution of mass fraction 15% is dropped to and is disperseed in egg white solution, stirring is mixed
Merge 25~30min of heating water bath at being placed in 45~50 DEG C, treat after the completion of heating water bath, be centrifuged under 3000~4000r/min
15~20min is separated, supernatant is collected and is adjusted pH to 7.0 with the ammonia spirit of mass concentration 10%, be prepared into modified extract solution；
（2）Collect fresh silk, in mass ratio 1:10, fresh silk is mixed with the stirring of the sodium carbonate liquor of mass fraction 0.5%,
It is subsequently heated to boiling, after 25~30min of insulation reaction, filters and collect filter cake, after being washed with deionized 3~5 times, collects
Boiled silk, then in mass ratio 1:15, boiled silk is mixed with the stirring of 10mol/L lithium-bromide solutions, at 45~50 DEG C
45~60min of lower heating water bath, collects to obtain silk fibroin protein solution；
（3）Then by volume 1:2, by step（1）The modified extract solution for preparing mixes with silk fibroin protein solution stirring, collects mixed
Close liquid to be placed under 0.15~0.20MPa, with the milipore filter of interception 10000 to its ultrafiltration 1~2h of desalting processing, collect ultrafiltration
Liquid and vacuum freeze drying, mill and are prepared into freeze-dried mixed powder；
（4）In mass ratio 1:10, the Tris-HCl buffer solutions stirring that freeze-dried mixed powder and the pH of above-mentioned preparation are 7.4 is mixed,
10~15min of heating water bath at 45~50 DEG C, collects to obtain film base fluid, and then in mass ratio 1:8, by glycerine and film base fluid
Stirring mixing, 10~15min of ultrasonic disperse under 200~300W after 6~8h of standing and defoaming, is prepared into coating liquid, then in phase
Under to humidity 50%, coating liquid is coated to lucite plate surface, control coating thickness for 0.8~1.0mm, completion to be coated
Afterwards, then at room temperature 20~24h of standing and drying, is prepared into a kind of antibacterial high-strength type edible packaging film by taking off film.
After testing, under the conditions of RH75%, the tensile strength of present invention gained edible packaging film for 41.22~
43.33MPa, elongation at break is 3.97~4.88%, and effectively suppresses the breeding of microorganism, and food preservation is extended at room temperature
12~15 days phases.
The beneficial effects of the invention are as follows：
（1）There is antibacterial high-strength type edible packaging film prepared by the present invention good tensile strength and fracture to stretch when in use
Rate long, and the water retention property of packaging film is good, it is easy to use, it is economical and practical；
（2）The present invention prepare edible packaging film barrier property is good, excellent antibacterial performance, dissolution velocity are fast, pollution-free, production
Process is simple, easily produces in enormous quantities.
Specific embodiment
Fresh albumen is collected, 25~30min of mixing is stirred under 450~600r/min, after the completion of mixing to be mixed, collected
Dispersion egg white solution, then in mass ratio 1:10, the citric acid solution of mass fraction 15% is dropped to and is disperseed in egg white solution, stirring is mixed
Merge 25~30min of heating water bath at being placed in 45~50 DEG C, treat after the completion of heating water bath, be centrifuged under 3000~4000r/min
15~20min is separated, supernatant is collected and is adjusted pH to 7.0 with the ammonia spirit of mass concentration 10%, be prepared into modified extract solution；
Collect fresh silk, in mass ratio 1:10, fresh silk is mixed with the stirring of the sodium carbonate liquor of mass fraction 0.5%, it is subsequently heated
To seething with excitement, after 25~30min of insulation reaction, filter cake is filtered and collected, after being washed with deionized 3~5 times, collect to obtain degumming silkworm
Silk, then in mass ratio 1:15, boiled silk is mixed with the stirring of 10mol/L lithium-bromide solutions, water-bath adds at 45~50 DEG C
45~60min of heat, collects to obtain silk fibroin protein solution；Then by volume 1:2, modified extract solution and silk fibroin protein solution are stirred
Mixing, collects mixed liquor and is placed under 0.15~0.20MPa, with the milipore filter of interception 10000 to its ultrafiltration desalting processing 1~
2h, collects ultrafiltrate and vacuum freeze drying, mills and is prepared into freeze-dried mixed powder；In mass ratio 1:10, by the mixed of above-mentioned preparation
Close freeze-dried powder and mix with the Tris-HCl buffer solutions stirring that pH is 7.4,10~15min of heating water bath at 45~50 DEG C is collected
Film base fluid, then in mass ratio 1:8, the stirring of glycerine and film base fluid is mixed, under 200~300W ultrasonic disperse 10~
15min, after 6~8h of standing and defoaming, is prepared into coating liquid, then under relative humidity 50%, coating liquid is coated to lucite
Plate surface, controls coating thickness for 0.8~1.0mm, it is to be coated after the completion of, then 20~24h of standing and drying at room temperature takes off film i.e.
A kind of antibacterial high-strength type edible packaging film can be prepared into.
Example 1
Fresh albumen is collected, mixing 25min is stirred under 450r/min, after the completion of mixing to be mixed, collect dispersion egg white solution, with
Afterwards in mass ratio 1:10, the citric acid solution of mass fraction 15% is dropped to and is disperseed in egg white solution, stirring mixing is placed at 45 DEG C
Heating water bath 25min, treats after the completion of heating water bath, the centrifugation 15min under 3000r/min collects supernatant and uses quality
The ammonia spirit of concentration 10% adjusts pH to 7.0, is prepared into modified extract solution；Collect fresh silk, in mass ratio 1:10, will be fresh
Silk mixes with the stirring of the sodium carbonate liquor of mass fraction 0.5%, is subsequently heated to boiling, after insulation reaction 25min, filters and receives
Collection filter cake, after being washed with deionized 3 times, collects to obtain boiled silk, and then in mass ratio 1:15, by boiled silk and 10mol/
L lithium-bromide solutions stirring mixing, the heating water bath 45min at 45 DEG C collects to obtain silk fibroin protein solution；Then by volume 1:2,
Modified extract solution is mixed with silk fibroin protein solution stirring, mixed liquor is collected and is placed under 0.15MPa, with interception 10000
Milipore filter collects ultrafiltrate and vacuum freeze drying to its ultrafiltration desalting processing 1h, mills and is prepared into freeze-dried mixed powder；By quality
Than 1:10, the Tris-HCl buffer solutions stirring that freeze-dried mixed powder and the pH of above-mentioned preparation are 7.4 is mixed, water-bath adds at 45 DEG C
Hot 10min, collects to obtain film base fluid, and then in mass ratio 1:8, glycerine is mixed with the stirring of film base fluid, the ultrasound under 200W
Dispersion 10min, after standing and defoaming 6h, is prepared into coating liquid, then under relative humidity 50%, coating liquid is coated to organic glass
Glass plate surface, controls coating thickness for 0.8mm, it is to be coated after the completion of, then standing and drying 20h at room temperature, taking off film can preparation
Obtain a kind of antibacterial high-strength type edible packaging film.After testing, under the conditions of RH75%, the drawing of present invention gained edible packaging film
Intensity is stretched for 41.22MPa, elongation at break is 3.97%, and effectively suppress the breeding of microorganism, food is extended at room temperature and is protected
Deposit the phase 12 days.
Example 2
Fresh albumen is collected, mixing 30min is stirred under 600r/min, after the completion of mixing to be mixed, collect dispersion egg white solution, with
Afterwards in mass ratio 1:10, the citric acid solution of mass fraction 15% is dropped to and is disperseed in egg white solution, stirring mixing is placed at 50 DEG C
Heating water bath 30min, treats after the completion of heating water bath, the centrifugation 20min under 4000r/min collects supernatant and uses quality
The ammonia spirit of concentration 10% adjusts pH to 7.0, is prepared into modified extract solution；Collect fresh silk, in mass ratio 1:10, will be fresh
Silk mixes with the stirring of the sodium carbonate liquor of mass fraction 0.5%, is subsequently heated to boiling, after insulation reaction 30min, filters and receives
Collection filter cake, after being washed with deionized 5 times, collects to obtain boiled silk, and then in mass ratio 1:15, by boiled silk and 10mol/
L lithium-bromide solutions stirring mixing, the heating water bath 60min at 50 DEG C collects to obtain silk fibroin protein solution；Then by volume 1:2,
Modified extract solution is mixed with silk fibroin protein solution stirring, mixed liquor is collected and is placed under 0.20MPa, with interception 10000
Milipore filter collects ultrafiltrate and vacuum freeze drying to its ultrafiltration desalting processing 2h, mills and is prepared into freeze-dried mixed powder；By quality
Than 1:10, the Tris-HCl buffer solutions stirring that freeze-dried mixed powder and the pH of above-mentioned preparation are 7.4 is mixed, water-bath adds at 50 DEG C
Hot 15min, collects to obtain film base fluid, and then in mass ratio 1:8, glycerine is mixed with the stirring of film base fluid, the ultrasound under 300W
Dispersion 15min, after standing and defoaming 8h, is prepared into coating liquid, then under relative humidity 50%, coating liquid is coated to organic glass
Glass plate surface, controls coating thickness for 1.0mm, it is to be coated after the completion of, then standing and drying 24h at room temperature, taking off film can preparation
Obtain a kind of antibacterial high-strength type edible packaging film.After testing, under the conditions of RH75%, the drawing of present invention gained edible packaging film
Intensity is stretched for 43.33MPa, elongation at break is 4.88%, and effectively suppress the breeding of microorganism, food is extended at room temperature and is protected
Deposit the phase 15 days.
Example 3
Fresh albumen is collected, mixing 28min is stirred under 530r/min, after the completion of mixing to be mixed, collect dispersion egg white solution, with
Afterwards in mass ratio 1:10, the citric acid solution of mass fraction 15% is dropped to and is disperseed in egg white solution, stirring mixing is placed at 48 DEG C
Heating water bath 28min, treats after the completion of heating water bath, the centrifugation 18min under 3500r/min collects supernatant and uses quality
The ammonia spirit of concentration 10% adjusts pH to 7.0, is prepared into modified extract solution；Collect fresh silk, in mass ratio 1:10, will be fresh
Silk mixes with the stirring of the sodium carbonate liquor of mass fraction 0.5%, is subsequently heated to boiling, after insulation reaction 28min, filters and receives
Collection filter cake, after being washed with deionized 4 times, collects to obtain boiled silk, and then in mass ratio 1:15, by boiled silk and 10mol/
L lithium-bromide solutions stirring mixing, the heating water bath 53min at 48 DEG C collects to obtain silk fibroin protein solution；Then by volume 1:2,
Modified extract solution is mixed with silk fibroin protein solution stirring, mixed liquor is collected and is placed under 0.18MPa, with interception 10000
Milipore filter collects ultrafiltrate and vacuum freeze drying to its ultrafiltration desalting processing 2h, mills and is prepared into freeze-dried mixed powder；By quality
Than 1:10, the Tris-HCl buffer solutions stirring that freeze-dried mixed powder and the pH of above-mentioned preparation are 7.4 is mixed, water-bath adds at 48 DEG C
Hot 13min, collects to obtain film base fluid, and then in mass ratio 1:8, glycerine is mixed with the stirring of film base fluid, the ultrasound under 250W
Dispersion 13min, after standing and defoaming 7h, is prepared into coating liquid, then under relative humidity 50%, coating liquid is coated to organic glass
Glass plate surface, controls coating thickness for 0.9mm, it is to be coated after the completion of, then standing and drying 22h at room temperature, taking off film can preparation
Obtain a kind of antibacterial high-strength type edible packaging film.After testing, under the conditions of RH75%, the drawing of present invention gained edible packaging film
Intensity is stretched for 42.33MPa, elongation at break is 4.38%, and effectively suppress the breeding of microorganism, food is extended at room temperature and is protected
Deposit the phase 14 days.
Claims (1)
1. a kind of preparation method of antibacterial high-strength type edible packaging film, it is characterised in that specific preparation process is：
（1）Fresh albumen is collected, 25~30min of mixing is stirred under 450~600r/min, after the completion of mixing to be mixed, collected
Dispersion egg white solution, then in mass ratio 1:10, the citric acid solution of mass fraction 15% is dropped to and is disperseed in egg white solution, stirring is mixed
Merge 25~30min of heating water bath at being placed in 45~50 DEG C, treat after the completion of heating water bath, be centrifuged under 3000~4000r/min
15~20min is separated, supernatant is collected and is adjusted pH to 7.0 with the ammonia spirit of mass concentration 10%, be prepared into modified extract solution；
（2）Collect fresh silk, in mass ratio 1:10, fresh silk is mixed with the stirring of the sodium carbonate liquor of mass fraction 0.5%,
It is subsequently heated to boiling, after 25~30min of insulation reaction, filters and collect filter cake, after being washed with deionized 3~5 times, collects
Boiled silk, then in mass ratio 1:15, boiled silk is mixed with the stirring of 10mol/L lithium-bromide solutions, at 45~50 DEG C
45~60min of lower heating water bath, collects to obtain silk fibroin protein solution；
（3）Then by volume 1:2, by step（1）The modified extract solution for preparing mixes with silk fibroin protein solution stirring, collects mixed
Close liquid to be placed under 0.15~0.20MPa, with the milipore filter of interception 10000 to its ultrafiltration 1~2h of desalting processing, collect ultrafiltration
Liquid and vacuum freeze drying, mill and are prepared into freeze-dried mixed powder；
（4）In mass ratio 1:10, the Tris-HCl buffer solutions stirring that freeze-dried mixed powder and the pH of above-mentioned preparation are 7.4 is mixed,
10~15min of heating water bath at 45~50 DEG C, collects to obtain film base fluid, and then in mass ratio 1:8, by glycerine and film base fluid
Stirring mixing, 10~15min of ultrasonic disperse under 200~300W after 6~8h of standing and defoaming, is prepared into coating liquid, then in phase
Under to humidity 50%, coating liquid is coated to lucite plate surface, control coating thickness for 0.8~1.0mm, completion to be coated
Afterwards, then at room temperature 20~24h of standing and drying, is prepared into a kind of antibacterial high-strength type edible packaging film by taking off film.
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| CN201611211701.5A CN106742701A (en) | 2016-12-25 | 2016-12-25 | A kind of preparation method of antibacterial high-strength type edible packaging film |
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| CN201611211701.5A CN106742701A (en) | 2016-12-25 | 2016-12-25 | A kind of preparation method of antibacterial high-strength type edible packaging film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112655757A (en) * | 2020-12-11 | 2021-04-16 | 南京信息工程大学 | Protein anticorrosive coating for fruits and vegetables and preparation method thereof |
| CN113080251A (en) * | 2021-05-14 | 2021-07-09 | 泉州师范学院 | Edible composite coating material and preparation method thereof |
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| CN1285402A (en) * | 2000-09-18 | 2001-02-28 | 中国科学技术大学 | Process for separation of lysozyme |
| CN101768577A (en) * | 2010-03-01 | 2010-07-07 | 德州天康食品有限公司 | Extraction of lysozyme in egg white and comprehensive utilization of egg white protein |
| CN104530456A (en) * | 2014-12-23 | 2015-04-22 | 惠州学院 | Water-insoluble silk fibroin-gelatin blended film and preparation method thereof |
| CN105440701A (en) * | 2016-01-21 | 2016-03-30 | 江南大学 | Preparation method of edible egg white protein nanometer film |
| CN105802253A (en) * | 2016-04-29 | 2016-07-27 | 江南大学 | Preparation method of edible enzyme modified egg white film |
| JP6019506B1 (en) * | 2015-12-28 | 2016-11-02 | 株式会社松田養蚕場 | Method for producing high molecular weight silk fibroin aqueous solution and method for producing high molecular weight silk fibroin powder |
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2016
- 2016-12-25 CN CN201611211701.5A patent/CN106742701A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285402A (en) * | 2000-09-18 | 2001-02-28 | 中国科学技术大学 | Process for separation of lysozyme |
| CN101768577A (en) * | 2010-03-01 | 2010-07-07 | 德州天康食品有限公司 | Extraction of lysozyme in egg white and comprehensive utilization of egg white protein |
| CN104530456A (en) * | 2014-12-23 | 2015-04-22 | 惠州学院 | Water-insoluble silk fibroin-gelatin blended film and preparation method thereof |
| JP6019506B1 (en) * | 2015-12-28 | 2016-11-02 | 株式会社松田養蚕場 | Method for producing high molecular weight silk fibroin aqueous solution and method for producing high molecular weight silk fibroin powder |
| CN105440701A (en) * | 2016-01-21 | 2016-03-30 | 江南大学 | Preparation method of edible egg white protein nanometer film |
| CN105802253A (en) * | 2016-04-29 | 2016-07-27 | 江南大学 | Preparation method of edible enzyme modified egg white film |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112655757A (en) * | 2020-12-11 | 2021-04-16 | 南京信息工程大学 | Protein anticorrosive coating for fruits and vegetables and preparation method thereof |
| CN113080251A (en) * | 2021-05-14 | 2021-07-09 | 泉州师范学院 | Edible composite coating material and preparation method thereof |
| CN113080251B (en) * | 2021-05-14 | 2023-08-18 | 泉州师范学院 | Edible composite coating material and preparation method thereof |
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