Degradable antibacterial food packaging material and manufacturing method thereof

Abstract

The invention discloses a degradable antibacterial food packaging material. The degradable antibacterial food packaging material is prepared from the following raw materials in parts by weight: 100 parts of low-density polyethylene, 2.4 to 2.6 parts of nano-zinc oxide, 6 to 8 parts of clove essential oil, 1.2 to 15 parts of potassium sorbate, 5.3 to 5.7 parts of a silane coupling agent KH550, 2 to 3 parts of shell powder, 1 to 2 parts of bacterial cellulose, 11 to 13 parts of enteromorpha fibres, 0.6 to 0.8 part of ascorbic acid and a suitable amount of water. The degradable antibacterial food packaging material takes the low-density polyethylene as a substrate, takes the nano-zinc oxide which is subjected to activating treatment by the silane coupling agent as a photocatalytic antibacterial agent, and is compounded with the clove essential oil, so that the degradable antibacterial food packaging material still has a strong antibacterial property without light and is high in broad-spectrum antibacterial property; meanwhile, the modified shell powder is added to serve as filler, and the adsorptivity is high; the prepared antibacterial food packaging material is environment-friendly and degradable, so that food has a relatively long shelf life without adding a preservative and refrigerating.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to a degradable antibacterial food packaging material and a manufacturing method thereof. Background technique [0002] Microorganisms are small in size, various in variety, rapid in reproduction and strong in adapting to the environment, and are widely distributed in nature. Most foods are rich in nutrients and high in water content, so they are easily contaminated by microorganisms and cause spoilage, which greatly shortens the shelf life of foods. How to prevent microbial contamination of food and prolong the shelf life of food has always been a subject of research and concern by relevant scientists all over the world. With the development of science and technology, food packaging materials prepared by antibacterial technology can become a practical and reliable antibacterial solution. [0003] In recent years, with the deepening of nanotechnology research and the expans...

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Problems solved by technology

[0004] However, the antibacterial mechanism of nano zinc oxide in this paper is photocatalytic antibacterial. Without light catalysis, the food preservation effect is poor, the shelf life is short, the conditions are harsh and the antibacterial broad spectrum is narrow. It is urgent to add a non-toxic, long-lasting antibacterial effect and no need for light. The catalytic antibacterial agent is compatible with it; at the same time, the food packaging material in this paper only has the function of barrier and protection, and has a single structure. With the increasing importance of food packaging material safety, the market's requirements for food packaging materials continue to increase. High-quality food prolongs the shelf life, especially the demand for active packaging materials, because it can change the packaging environment inside the packaging materials by deoxidizing, antibacterial, dehumidifying, ethylene removing, releasing ethanol, etc., preventing the growth of microorganisms, and then improving food quality. shelf life, necessitating modification of existing technologies