Artichoke polyphenol-chitosan nanoparticle starch gelatin composite film and preparation method and application thereof

A technology of chitosan nanoparticles and starch gelatin, which is applied in the directions of transportation and packaging, sustainable manufacturing/processing, flexible coverings, etc., can solve the problems of limiting the water vapor barrier ability of blended films, and achieve strong mechanical strength and Barrier performance, simple preparation method, and reasonable proportioning effect

Inactive Publication Date: 2018-10-09
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although gelatin can improve the performance of starch-based materials, the high hydrophilicity of the two polymers limits the water vapor barrier ability of the blended film, which still needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Take artichoke stem and leaf powder with a particle size of 10-20 mesh, add 8 times the amount (mass volume ratio) of 60% ethanol, 200W ultrasonic extraction 2 times, each time 30min, filter after extraction; combine the filtrates, at 60 ° C Concentrate under reduced pressure to obtain a clear paste with a relative density of 1.23 to 1.48, freeze-dry for 24 hours to obtain artichoke polyphenol freeze-dried powder;

[0032] 2) Add a certain amount of chitosan powder (deacetylation degree>80%, viscosity>200mpa.s) into 1% acetic acid aqueous solution, magnetically stir until completely dissolved, and obtain a chitosan solution with a concentration of 1 mg / mL;

[0033] Add the artichoke polyphenol freeze-dried powder prepared in step 1) into the chitosan solution, and magnetically stir to dissolve to obtain the artichoke polyphenol chitosan solution, wherein the artichoke polyphenol concentration is 0.5 mg / mL;

[0034] 3) Add the sodium polyphosphate solution to the arti...

Embodiment 2

[0041] 1) Take artichoke stem and leaf powder with a particle size of 10-20 mesh, add 8 times the amount of 60% ethanol, 200W ultrasonic extraction twice, 30min each time, filter after extraction; combine the filtrates, concentrate under reduced pressure at 60°C to obtain relative The clear paste with a density of 1.23-1.48 was freeze-dried for 24 hours to obtain the artichoke polyphenol freeze-dried powder;

[0042] 2) Add a certain amount of chitosan powder (deacetylation degree>80%, viscosity>200mpa.s) into 1% acetic acid aqueous solution, magnetically stir until completely dissolved, and obtain a chitosan solution with a concentration of 2mg / mL;

[0043] Add the artichoke polyphenol freeze-dried powder prepared in step 1) into the chitosan solution, and magnetically stir to dissolve to obtain the artichoke polyphenol chitosan solution, wherein the artichoke polyphenol concentration is 0.5 mg / mL;

[0044] 3) Add the sodium polyphosphate solution to the artichoke polyphenol ...

Embodiment 3

[0051] 1) Take artichoke stem and leaf powder with a particle size of 10-20 mesh, add 8 times the amount of 60% ethanol, 200W ultrasonic extraction twice, 30min each time, filter after extraction; combine the filtrates, concentrate under reduced pressure at 60°C to obtain relative The clear paste with a density of 1.23-1.48 was freeze-dried for 24 hours to obtain the artichoke polyphenol freeze-dried powder;

[0052] 2) Add a certain amount of chitosan powder (deacetylation degree>80%, viscosity>200mpa.s) into 1% acetic acid aqueous solution, magnetically stir until completely dissolved, and obtain a chitosan solution with a concentration of 1 mg / mL;

[0053] Add the artichoke polyphenol freeze-dried powder prepared in step 1) into the chitosan solution, and magnetically stir to dissolve to obtain the artichoke polyphenol chitosan solution, wherein the artichoke polyphenol concentration is 0.5 mg / mL;

[0054] 3) Add the sodium polyphosphate solution to the artichoke polyphenol...

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Abstract

The invention discloses an artichoke polyphenol-chitosan nanoparticle starch gelatin composite film and a preparation method and application thereof. Natural edible bio-macromolecular chitosan capableof forming a film and polyphosphates are used for firstly preparing artichoke polyphenol-chitosan-polyphosphate nanoparticles, and then, the nanoparticles are added into starch and gelatin to preparethe artichoke polyphenol-chitosan nanoparticle starch gelatin composite film. The edible film obtained by the invention has good film forming characteristics, has good barrier property and tensile strength, has anti-oxidative and anti-bacterial effects, can be applied to packaging of fruits, vegetables and the like, is an innovative edible film, and belongs to an innovative food packaging technology.

Description

technical field [0001] The invention belongs to the technical field of artichoke and food deep processing, and in particular relates to an artichoke polyphenol-chitosan nanoparticle starch-gelatin composite film and a preparation method and application thereof. Background technique [0002] In today's increasingly severe environment and sustainable development problems, the development of renewable, degradable and environmentally friendly natural biopolymer edible film materials to replace traditional plastic packaging and reduce white pollution has become a research hotspot in the field of food packaging today. Edible films are usually based on natural biomacromolecules such as polysaccharides and proteins, and are formed through intramolecular and intermolecular hydrogen bonds, hydrophobic interactions, ionic bonds or disulfide bonds with certain mechanical properties and Dense three-dimensional network membrane structure with barrier properties. [0003] Starches are wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L89/00C08L5/08C08K5/13C08K3/32C08K5/053C08J5/18B65D65/46
CPCB65D65/463C08J5/18C08J2303/02C08J2389/00C08J2403/02C08J2405/08C08J2489/00C08K5/053C08K5/13C08K2003/324Y02W90/10Y02A40/90
Inventor 汤须崇黄家妮杨琼洪俊明邓爱华黄志宏
Owner HUAQIAO UNIVERSITY
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