Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of straw cellulose antibacterial fresh-keeping film and preparation method thereof

A technology of straw cellulose and fresh-keeping film, applied in the field of fresh-keeping, can solve the problems of affecting food safety and hygiene, poor air flow, high environmental humidity, etc., and achieve the effects of good mechanical properties, simple process and degraded environment.

Active Publication Date: 2021-02-23
NORTHEAST FORESTRY UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when food is packaged with ordinary plastic wrap, the air flow inside the package is poor and the ambient humidity is high. The plastic wrap and the food space become an independent environmental system, which is more likely to cause the growth and reproduction of bacteria and microorganisms, and cause the packaged food to deteriorate. affect food safety and sanitation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of straw cellulose antibacterial fresh-keeping film and preparation method thereof
  • A kind of straw cellulose antibacterial fresh-keeping film and preparation method thereof
  • A kind of straw cellulose antibacterial fresh-keeping film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A straw cellulose antibacterial fresh-keeping film prepared from microcrystalline cellulose obtained from plant straws, the antibacterial fresh-keeping film contains a certain quality of antibacterial agent, and the antibacterial agent is dandelion extract or tea polyphenol one or a combination of two.

Embodiment 2

[0048] A straw cellulose antibacterial fresh-keeping film is prepared from microcrystalline cellulose obtained from plant straws, and the antibacterial fresh-keeping film contains an antibacterial agent with a mass of 10-30% of the raw material microcrystalline cellulose, and the antibacterial agent is One or a combination of dandelion extract or tea polyphenols.

Embodiment 3

[0050] A preparation method of straw cellulose antibacterial fresh-keeping film, the steps are as follows:

[0051] Step 1, preparing straw cellulose:

[0052] Remove the leaves of the plant straw, cut into sections, wash and heat-treat in boiling water for 1 hour, dry and crush the heat-treated straw to 40 meshes to obtain straw powder; mix the straw powder with NaOH solution according to a certain solid-liquid ratio and mix under certain conditions Complete the alkalization treatment, after centrifugation, wash the first centrifugal sediment to neutrality and mix it with sodium chlorite solution according to a certain solid-liquid ratio, adjust the pH to 4.0, complete the decolorization and impurity removal treatment at a certain temperature and centrifuge, and the second The centrifuged sediment was washed to neutrality and dried and pulverized to obtain straw cellulose;

[0053] Step 2, preparing microcrystalline cellulose:

[0054] mixing the straw cellulose obtained in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of fresh-keeping, and in particular relates to a straw cellulose antibacterial fresh-keeping film and a preparation method thereof. The antibacterial fresh-keeping film of the present invention uses microcrystalline cellulose prepared from plant straw as a raw material, and simultaneously contains an antibacterial agent with a mass of microcrystalline cellulose of 10 to 30%, and the antibacterial agent is one or more of dandelion extract or tea polyphenol A combination of the two. The present invention first extracts cellulose from plant straws to prepare microcrystalline cellulose, then uses safe and green imidazolium chloride salt ionic liquid as a solvent to mix with microcrystalline cellulose to prepare casting solution, and then coats the casting solution on a glass plate A wet film is formed on the film, the imidazolium chloride salt ionic liquid in the wet film is precipitated and eluted in deionized water, and the straw cellulose antibacterial fresh-keeping film is prepared after the wet film is dried. The straw cellulose antibacterial and fresh-keeping film of the invention has good mechanical properties, water-permeable and air-permeable properties and antibacterial properties, can effectively prevent bacterial growth during food preservation, prolong the fresh-keeping period, and the raw materials are safe, non-toxic and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping, and in particular relates to a straw cellulose antibacterial fresh-keeping film and a preparation method thereof. Background technique [0002] Ordinary cling film is mostly processed from petrochemical raw materials such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), which are more common in people's daily life. The large-scale industrial production technology is relatively mature, and has Excellent barrier and mechanical properties. However, it causes great pollution to the environment, and petroleum is a non-renewable energy source, which does not meet the needs of today's green development. Most ordinary plastic wraps add a lot of plasticizers or produce toxic substances after heating, which will migrate to the wrapped fruit. , endangering people's health. [0003] my country is a big agricultural country, the annual output of straw is higher than 700 million tons...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L1/02C08K5/00C08J5/18
CPCC08J5/18C08J2301/02C08K5/0058Y02P20/54
Inventor 张群利崔琳琳邬泽凯仙鸽翟薇丽
Owner NORTHEAST FORESTRY UNIVERSITY