CN106117615A - A kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film and preparation method thereof - Google Patents
A kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film and preparation method thereof Download PDFInfo
- Publication number
- CN106117615A CN106117615A CN201610518844.4A CN201610518844A CN106117615A CN 106117615 A CN106117615 A CN 106117615A CN 201610518844 A CN201610518844 A CN 201610518844A CN 106117615 A CN106117615 A CN 106117615A
- Authority
- CN
- China
- Prior art keywords
- tea polyphenols
- arghan
- fortification
- polyglutamic acid
- modification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
-
- 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
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K2201/011—Nanostructured additives
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film, including following parts by weight of component: arghan 100 102, endo cellulase 67, nano diatomite 45, citric acid 34, γ polyglutamic acid 46 47, chitosan 22 23, wood vinegar 11 12, tea polyphenols 78, gutta-percha 67, Cortex Eucommiae extract 34, ethylene-vinyl acetate copolymer 21 23, sucrose fatty acid ester 34, appropriate deionized water, appropriate water, appropriate glycerol.The present invention uses modified γ polyglutamic acid graft modification arghan element to prepare packaging film, film is uniform and stable and texture material is fine and smooth, the membrane structure stable performance of preparation, by the gutta-percha added, the stable fortification tea polyphenols of Cortex Eucommiae extract modification, add non-oxidizability and the nutritive effect of film.
Description
Technical field
The present invention relates to arghan packaging film technical field, particularly relate to a kind of tea polyphenols fortification modification γ-
Polyglutamic acid grafting arghan packaging film and preparation method thereof.
Background technology
With cellulose as raw material, the different macromolecule member material of processability is at necks such as medical science, biology and food medicine
Territory plays an important role, and has become as the focus of current research.China often produces substantial amounts of Fructus Ananadis comosi per year, and arghan has
The health-care effecies such as antibacterial, smelly eliminating, utilize arghan to prepare macromolecule member material and have huge development prospect.Pineapple leaves is fine
The fiber macromolecular alignment of dimension crystallization song is neat, regular, and the polyhydroxy structure of fiber molecule and strong hydrogen bonding effect make it clean
Cleanliness and the degree of orientation are higher, and chemical reactivity is low, thus cause its application to be restricted." the agriculture in south such as Wei Xiaoyi, Yang Qin
Journal ", 2016,47(1): 101-106 " arghan element film preparation process optimization " utilizes emulsifying cut mode to make pineapple leaves
Cellulose dissolution improves the chemical reactivity of arghan in ionic liquid, it is achieved the preparation of cellulose membrane, specifically does
Method is: be ground into cotton shape with Universalpulverizer after first being dried by arghan element, and alkali processes and acid treatment realizes it respectively
Purification process, is then being placed in together with ionic liquid in mulser, is carrying out shear treatment, acquisition prepare the cellulose of film from
Sub-liquid homogeneous phase solution, is layered on homogeneous phase solution on the carrier scribbling politef afterwards, through casting solution (glycerol, second
Alcohol) etc. soak drying and forming-film；This process technique improves the chemical reaction activity of arghan element, improves the equal of coating solution
Phase, but operate and employ substantial amounts of acidizer and alkali inorganic agent, adds somewhat to pollute, add Fructus Ananadis comosi
Leaf fibre element film preparation cost, the cellulose membrane function singleness simultaneously prepared.Nano-cellulose have high-crystallinity, high intensity,
The excellent properties such as high-specific surface area, environmental friendliness and low cost, also exist substantial amounts of-OH in its molecular structure, with other skies
So macromole is easily formed intermolecular and intramolecular hydrogen bond when being blended, and when being used for making membrane material, can make the formation of intermingling material
Membrane structure more stable.Gamma-polyglutamic acid-(γ-PGA) is the homopolymer of glutamic acid, is a kind of water soluble polymer, by D-
Glutamic acid or Pidolidone form, by alpha-amido and γ-carboxyl, the anionic polymer that γ-amido link is combined into, and have
The feature features such as good biocompatibility, good water solubility, degradable, edible, film property, as the life of a kind of new green environment protection
Thing material receives much concern, but readily soluble because meeting water, and certain degree limits its application.Micro-nano bubble refers to that diameter is between micron
Bubble (bubble of a diameter of 10-50um in water body) and nano bubble (a diameter of bubble less than 200nm in water body) it
Between bubble, have big specific surface area, can in water body the time of staying long, and micro-nano bubble is when shrinking, it is possible to
Producing substantial amounts of hydroxyl radical free radical, these substantial amounts of hydroxyl radical free radicals can attract the hydrogen in arghan element to a certain extent
Key, plays equivalent acidifying alkalization and destroys the effect that hydrogen bond is identical, the nanorize promoting arghan is improved its chemical reaction
Activity has certain facilitation.
The fibrous membrane that arghan based on modified gamma-polyglutamic acid-and high chemical reactivity combines is to improving Fructus Ananadis comosi
Comprehensive utilization and the abundant packaging film kind of leaf are significant.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of tea polyphenols fortification modification γ-poly-
Glutamic acid grafting arghan packaging film and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of tea polyphenols fortification modification gamma-polyglutamic acid-grafting arghan packaging film, including following parts by weight of component:
Arghan 100-102, endo cellulase 6-7, nano diatomite 4-5, citric acid 3-4, gamma-polyglutamic acid-46-47, shell
Polysaccharide 22-23, wood vinegar 11-12, tea polyphenols 7-8, gutta-percha 6-7, Cortex Eucommiae extract 3-4, ethylene-vinyl acetate copolymer
21-23, sucrose fatty acid ester 3-4, appropriate deionized water, appropriate water, appropriate glycerol.
A kind of tea polyphenols fortification modification gamma-polyglutamic acid-grafting arghan packaging film preparation method, including with
Lower step:
(1), will arghan dry after become cotton shape by pulverization process 30min in Universalpulverizer, afterwards with citric acid with
And the water mixing and stirring of gross weight 2-3 times to obtain slurry standby；By nano diatomite, endo cellulase and gross weight 1-
The water mixing and stirring of 2 times, be spray-dried modified, high temperature resistant endo cellulase is standby；Slurry is heated to 80 DEG C, and
It is continuously added into modified, high temperature resistant endo cellulase mix and blend enzymolysis 40min, after 100 DEG C of enzyme denaturing, uses funnel sucking filtration to dry,
Obtain modified arghan element standby；
(2), the deionized water of chitosan, wood vinegar and gross weight 2-3 times is mixed, after 40 DEG C of heated and stirred are uniformly,
Adding gamma-polyglutamic acid-and continue heated and stirred 1h at 80 DEG C, the least fire literary composition boils 1-1.2h and obtains having strong antimicrobial effect
Modified hydrophobic gamma-polyglutamic acid-is standby；The deionized water of gutta-percha, Cortex Eucommiae extract, tea polyphenols and gross weight 2 times is mixed
High pressure homogenize stirs, and to prepare modified stable fortification tea polyphenols standby for spray drying afterwards；
(3), by modification arghan element, modified hydrophobic gamma-polyglutamic acid-, modified stable fortification tea polyphenols, ethylene-vinegar
Acid ethylene copolymer, the deionized water of sucrose fatty acid ester and gross weight 3-4 times stir after mixing, be then placed in
The mulser of intense ultrasonic wave carries out ultrasonic assistant emulsifying shear treatment 40min and obtains homogeneous membrane solution for standby, wherein ultrasound wave
Power 1000W, emulsifying shear rate 15000r/min；
(4), the deionized water coagulating bath of homogeneous membrane solution is solidified, take out after film water is washed again with the glycerol liquor of concentration 28%-30%
Solution soaks 2h at 40 DEG C and carries out plastics processing, afterwards dried 2h and get final product under 45 DEG C of constant temperature.
The invention have the advantage that
The present invention uses modified gamma-polyglutamic acid-graft modification arghan element to prepare packaging film, and film is uniform and stable and material
Material exquisite quality, the membrane structure stable performance of preparation, by the gutta-percha added, the stable fortification of Cortex Eucommiae extract modification
Tea polyphenols, adds non-oxidizability and the nutritive effect of film；By the modification to gamma-polyglutamic acid-of the chitosan wood vinegar, real
Show the enhancing of hydrophobically modified and anti-microbial property, it is achieved that the gamma-polyglutamic acid-extensive application in packaging film.The present invention exists
In preparation process, by means of the enzyme that nano diatomite is modified, decrease pollution that traditional fibre element soda acid purification process causes and
Expense cost, it is achieved that environmental protection produces；Furthermore, ultrasonic assistant emulsifying shear treatment one step achieves arghan
Further nanorize and coating solution is homogeneous, the micro-nano bubble that intense ultrasonic wave effect produces existence in coating solution, promotees
Enter the nanorize of arghan, increased its dissolubility, improve the homogeneous degree of coating solution, equal for cellulose membrane structure
Even stably providing guarantee, this physical treatment method decreases the use of conventional homogeneous liquid preparation process intermediate ion liquid.
Detailed description of the invention
A kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film, including following weight portion group
Point: arghan 100, endo cellulase 6, nano diatomite 4, citric acid 3, γ polyglutamic acid 46, chitosan 22, wood vinegar
Liquid 11, tea polyphenols 7, gutta-percha 6, Cortex Eucommiae extract 3, ethylene-vinyl acetate copolymer 21, sucrose fatty acid ester 3, appropriate going
Ionized water, appropriate water, appropriate glycerol.
A kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film preparation method, including following
Step:
(1), will arghan dry after become cotton shape by pulverization process 30min in Universalpulverizer, afterwards with citric acid with
And the water mixing and stirring of gross weight 2 times to obtain slurry standby；By nano diatomite, endo cellulase and gross weight 1 times
Water mixing and stirring, be spray-dried modified, high temperature resistant endo cellulase is standby；Slurry is heated to 80 DEG C, and continues
Add modified, high temperature resistant endo cellulase mix and blend enzymolysis 40min, after 100 DEG C of enzyme denaturing, use funnel sucking filtration to dry, must change
Property arghan element is standby；
(2), the deionized water of chitosan, wood vinegar and gross weight 2 times is mixed, after 40 DEG C of heated and stirred are uniformly, add
Entering γ polyglutamic acid and continue heated and stirred 1h at 80 DEG C, the least fire literary composition boils the modified hydrophobic that 1h obtains having strong antimicrobial effect
γ polyglutamic acid is standby；Deionized water mixed high-voltage homogenizing by gutta-percha, Cortex Eucommiae extract, tea polyphenols and gross weight 2 times
Stirring, to prepare modified stable fortification tea polyphenols standby for spray drying afterwards；
(3), by modification arghan element, modified hydrophobic γ polyglutamic acid, modified stable fortification tea polyphenols, ethylene vinyl acetate
Stir after the deionized water mixing of ethylene copolymer, sucrose fatty acid ester and gross weight 3 times, be then placed in strong super
The mulser of sound wave carries out ultrasonic assistant emulsifying shear treatment 40min and obtains homogeneous membrane solution for standby, wherein ultrasonic power
1000W, emulsifying shear rate 15000r/min；
(4), the deionized water coagulating bath of homogeneous membrane solution is solidified, take out after film water is washed again with the glycerine water solution of concentration 28%%
Soak 2h at 40 DEG C and carry out plastics processing, afterwards dried 2h and get final product under 45 DEG C of constant temperature.
After tested, the maximum tensile strength of this packaging film is 15.2MPa, and now elongation at break is 31.2%；The minimum of film
OTR oxygen transmission rate is reached for 2.5 × 10-5cm3/ (m2 d Pa), and after soil buries 150d, its biological degradation rate reaches 94%, demonstrates
Excellent biological degradability.
Claims (2)
1. tea polyphenols fortification modification gamma-polyglutamic acid-grafting arghan packaging film, it is characterised in that include with
Lower parts by weight of component: arghan 100-102, endo cellulase 6-7, nano diatomite 4-5, citric acid 3-4, γ-poly-
Glutamic acid 46-47, chitosan 22-23, wood vinegar 11-12, tea polyphenols 7-8, gutta-percha 6-7, Cortex Eucommiae extract 3-4, ethylene-vinegar
Acid ethylene copolymer 21-23, sucrose fatty acid ester 3-4, appropriate deionized water, appropriate water, appropriate glycerol.
2. a tea polyphenols fortification modification gamma-polyglutamic acid-grafting arghan packaging film preparation method, its feature exists
In, comprise the following steps:
(1), will arghan dry after become cotton shape by pulverization process 30min in Universalpulverizer, afterwards with citric acid with
And the water mixing and stirring of gross weight 2-3 times to obtain slurry standby；By nano diatomite, endo cellulase and gross weight 1-
The water mixing and stirring of 2 times, be spray-dried modified, high temperature resistant endo cellulase is standby；Slurry is heated to 80 DEG C, and
It is continuously added into modified, high temperature resistant endo cellulase mix and blend enzymolysis 40min, after 100 DEG C of enzyme denaturing, uses funnel sucking filtration to dry,
Obtain modified arghan element standby；
(2), the deionized water of chitosan, wood vinegar and gross weight 2-3 times is mixed, after 40 DEG C of heated and stirred are uniformly,
Adding gamma-polyglutamic acid-and continue heated and stirred 1h at 80 DEG C, the least fire literary composition boils 1-1.2h and obtains having strong antimicrobial effect
Modified hydrophobic gamma-polyglutamic acid-is standby；The deionized water of gutta-percha, Cortex Eucommiae extract, tea polyphenols and gross weight 2 times is mixed
High pressure homogenize stirs, and to prepare modified stable fortification tea polyphenols standby for spray drying afterwards；
(3), by modification arghan element, modified hydrophobic gamma-polyglutamic acid-, modified stable fortification tea polyphenols, ethylene-vinegar
Acid ethylene copolymer, the deionized water of sucrose fatty acid ester and gross weight 3-4 times stir after mixing, be then placed in
The mulser of intense ultrasonic wave carries out ultrasonic assistant emulsifying shear treatment 40min and obtains homogeneous membrane solution for standby, wherein ultrasound wave
Power 1000W, emulsifying shear rate 15000r/min；
(4), the deionized water coagulating bath of homogeneous membrane solution is solidified, take out after film water is washed again with the glycerol liquor of concentration 28%-30%
Solution soaks 2h at 40 DEG C and carries out plastics processing, afterwards dried 2h and get final product under 45 DEG C of constant temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518844.4A CN106117615A (en) | 2016-07-04 | 2016-07-04 | A kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518844.4A CN106117615A (en) | 2016-07-04 | 2016-07-04 | A kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106117615A true CN106117615A (en) | 2016-11-16 |
Family
ID=57468357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610518844.4A Withdrawn CN106117615A (en) | 2016-07-04 | 2016-07-04 | A kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106117615A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219348A (en) * | 2007-09-12 | 2008-07-16 | 昆山华科生物高分子材料研究所有限公司 | Gama-polyglutamic acid compound film producing method |
| CN103102419A (en) * | 2013-01-25 | 2013-05-15 | 浙江理工大学 | Method for preparing nano microcrystalline cellulose by hydrolyzing phyllostachys edulis fiber with cellulase |
| CN103160016A (en) * | 2013-02-22 | 2013-06-19 | 中科院广州化学有限公司 | Cellulose nanocrystal/ethylene-vinyl acetate (EVA) gas separating membrane, preparation method thereof and application thereof |
| CN103254469A (en) * | 2013-06-08 | 2013-08-21 | 中国国旅贸易有限责任公司 | Edible film material containing nanocellulose, edible film and preparation method of edible film |
| CN104312117A (en) * | 2014-10-14 | 2015-01-28 | 昆明学院 | Biological macromolecular composite material for tableware and preparation method thereof |
-
2016
- 2016-07-04 CN CN201610518844.4A patent/CN106117615A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219348A (en) * | 2007-09-12 | 2008-07-16 | 昆山华科生物高分子材料研究所有限公司 | Gama-polyglutamic acid compound film producing method |
| CN103102419A (en) * | 2013-01-25 | 2013-05-15 | 浙江理工大学 | Method for preparing nano microcrystalline cellulose by hydrolyzing phyllostachys edulis fiber with cellulase |
| CN103160016A (en) * | 2013-02-22 | 2013-06-19 | 中科院广州化学有限公司 | Cellulose nanocrystal/ethylene-vinyl acetate (EVA) gas separating membrane, preparation method thereof and application thereof |
| CN103254469A (en) * | 2013-06-08 | 2013-08-21 | 中国国旅贸易有限责任公司 | Edible film material containing nanocellulose, edible film and preparation method of edible film |
| CN104312117A (en) * | 2014-10-14 | 2015-01-28 | 昆明学院 | Biological macromolecular composite material for tableware and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张莉等: ""纤维素纳米改性技术及其性能研究"", 《中国印刷与包装研究》 * |
| 魏晓奕等: ""菠萝叶纤维素膜制备工艺优化"", 《南方农业学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107417937B (en) | Graphene modified cellulose membrane and preparation method thereof | |
| CN111087491B (en) | Method for preparing hemicellulose, carboxylated cellulose nano crystal, fibril and citrate multi-component product from fiber by using citric acid | |
| CN104892772B (en) | Method of poroducing nanofibers from gramineae | |
| Zaki et al. | Microbial treatment for nanocellulose extraction from marine algae and its applications as sustainable functional material | |
| Ai et al. | Toward cleaner production of nanocellulose: A review and evaluation | |
| CN106117611A (en) | A kind of polylactic acid blend modification pulullan polysaccharide grafting pina fibre packaging film and preparation method thereof | |
| CN103556235A (en) | Preparation technology of cellulose fiber spinning solution | |
| CN106009570B (en) | PLA bamboo nano-cellulose whisker ultra micro bamboo charcoal composite material method for manufacturing thin film | |
| CN113354875B (en) | Production method of low-cost biodegradable disposable straw | |
| CN105885111A (en) | Plastic bag easy to degrade | |
| CN106117613A (en) | A kind of epoxidized vegetable oil blending and modifying pulullan polysaccharide grafting pina fibre packaging film and preparation method thereof | |
| CN104371127A (en) | Juicy food packaging biodegradable chitosan film preparation method | |
| CN103450643B (en) | Cellulose nanocrystal and the method for aliphatic polyester compatibility is improved with phthalic anhydride | |
| CN101508786A (en) | Method for dissolution of bacteria cellulose | |
| CN105885099A (en) | Pineapple leaf cellulose packaging film with antibacterial effect and preparation method for pineapple leaf cellulose packaging film | |
| CN105949518A (en) | Modified gamma-polyglutamic acid grafted pineapple leaf fiber packaging film with preservation effect and preparation method thereof | |
| CN106835784A (en) | A kind of method that nano-cellulose is prepared in AmimCl systems | |
| CN106084301A (en) | A kind of chitin modified γ polyglutamic acid grafting arghan packaging film and preparation method thereof | |
| CN108610517A (en) | A kind of preparation method of nano-cellulose enhancing hemicellulose group compound film | |
| CN105924681A (en) | Mung bean hull nano cellulose commixed modified pulullan grafted pineapple fiber packaging membrane and preparation method thereof | |
| CN106117612A (en) | A kind of ascidian cellulose blending modification pulullan polysaccharide grafting pina fibre packaging film and preparation method thereof | |
| CN106117615A (en) | A kind of tea polyphenols fortification modification γ polyglutamic acid grafting arghan packaging film and preparation method thereof | |
| CN105885098A (en) | Fish scale gelatin and modified gamma-polyglutamic acid grafted pineapple leaf fiber package film and preparation method thereof | |
| CN107880502A (en) | A kind of biological whole degradation plastic and preparation method thereof | |
| CN105949517A (en) | Aloe vera gel-modified gamma-polyglutamic acid grafted pineapple leaf fiber packaging film and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20161116 |