Hydrogel composite material, preparation method and application

A composite material and hydrogel technology, which is applied in application, protection of fruits/vegetables with a coating protective layer, food science, etc., can solve the problems of unsatisfactory fresh-keeping effect, easy breeding of bacteria and mold, oxidation reaction, etc., and achieve excellent antibacterial Excellent freshness-preserving effect, antibacterial and moisturizing effects, and simple preparation method

Active Publication Date: 2022-04-19
RES INST OF ZHEJIANG UNIV TAIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of use, the fresh-keeping film of these materials is easy to oxidize with the fresh-keeping material, or it is easy to breed bacteria, mold, etc., resulting in unsatisfactory fresh-keeping effect

Method used

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  • Hydrogel composite material, preparation method and application
  • Hydrogel composite material, preparation method and application
  • Hydrogel composite material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Weigh 3.0g of gelatin and 0.15g of xanthan gum into a beaker, add 30mL of water, heat in a 60°C water bath until completely dissolved, then add 0.3g of polyglycerol-10 while hot, stir and mix evenly;

[0036] 2. Put the above solution in a refrigerator at 8°C, cool it until it becomes viscous, and wrap it in red bayberry; take it out and place it in a glass dish, and treat it at a low temperature of 5°C to solidify into a dense wrapping layer to obtain a hydrogel composite material wrapping Bayberry;

[0037] 3. Put the bayberry wrapped with the hydrogel composite material at room temperature for observation and record.

Embodiment 2

[0039] 1. Weigh 3.0g of gelatin and 0.3g of sodium alginate into a beaker, add 30mL of water, heat in a water bath at 60°C until completely dissolved, then add 0.3g of polyglycerol-10 while hot, and stir to mix evenly;

[0040] 2. Place the above solution in a refrigerator at 8°C, cool it to a viscous gel, put it in bayberry for wrapping; take it out, place it in a glass dish, and treat it at a low temperature of 5°C to solidify into a dense wrapping layer to obtain a hydrogel composite composite wrapping bayberry;

[0041] 3. Put the bayberry wrapped with the hydrogel composite material at room temperature to observe and record the phenomenon.

Embodiment 3

[0043] 1. Weigh 3.0g of gelatin and 0.12g of quaternary ammonium chitosan into a beaker, add 30mL of water, heat in a water bath at 60°C until completely dissolved, then add 1.8g of polyglycerol-10 while hot, and stir to mix evenly;

[0044] 2. Put the above solution in a refrigerator at 8°C, cool it until it becomes viscous, and wrap it in red bayberry; take it out and place it in a glass dish, and treat it at a low temperature of 5°C to solidify into a dense wrapping layer to obtain a hydrogel composite material wrapping Bayberry;

[0045] 3. Put the bayberry wrapped with the hydrogel composite material at room temperature to observe and record the phenomenon.

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PUM

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Abstract

The invention discloses a hydrogel composite material, a preparation method and application, and relates to the field of antibacterial hydrogel composite materials and fruit antibacterial preservation. Through the formula design of the hydrogel, the antibacterial property and moisture retention of the composite material are remarkably improved, and the fresh-keeping time and taste of fruits can be controlled by adjusting the proportion of the components; the preparation method of the hydrogel composite material is easy to operate and good in wrapping performance; the hydrogel composite material prepared by the invention has excellent antibacterial and fresh-keeping effects, under the condition of room temperature, waxberries are stored for 7 days, strawberries are preserved for 14 days, and the storage time of fruits is prolonged.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a hydrogel composite material, a preparation method and an application. Background technique [0002] With the improvement of people's quality of life, the requirements for product storage safety and product preservation are getting higher and higher. At present, product packaging materials and fresh-keeping technology have become research hotspots. In the prior art, the plastic wrap is usually made of high molecular polymer materials such as ethylene-vinyl alcohol copolymer, low-density polyethylene or polypropylene. However, during use, the fresh-keeping films of these materials are prone to oxidative reactions with the fresh-keeping materials, or they are easy to breed bacteria, molds, etc., resulting in unsatisfactory fresh-keeping effects. [0003] For fruits that are difficult to store and transport, it is an irreversible research trend to develop a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08L89/00C08L5/00C08L5/04C08L5/08C08L71/02A23B7/16
CPCC08J3/075A23B7/16C08J2389/00C08J2371/02C08J2489/00C08J2405/00C08J2471/02C08J2405/04C08J2405/08A23V2002/00A23V2250/5432A23V2250/5086A23V2250/5026A23V2250/511A23V2250/6406
Inventor 刘振中应佳蕾马春新徐鑫磊何广宇
Owner RES INST OF ZHEJIANG UNIV TAIZHOU
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