Light-resistant antimicrobial food packaging material and preparation method thereof

Abstract

The invention discloses a light-resistant antimicrobial food packaging material. The light-resistant antimicrobial food packaging material is prepared from the following raw materials in parts by weight: 100 parts of low-density polyethylene, 13 to 15 parts of ABS resin, 3.4 to 3.9 parts of nanometer zinc oxide, 6.4 to 6.9 parts of rosemary essential oil, 1.5 to 1.8 parts of benzoic acid, 0.3 to 0.6 parts of sodium alginate tech grade, 3 to 5 parts of propolis, 2 to 3 parts of shale powder, 6 to 9 parts of beech wood shaving, 7.4 to 7.9 parts of (Triethoxysilylpropyl)urea, and a balance amount of water; the low-density polyethylene is as a base material, the nanometer zinc oxide activated by a silane coupling agent is as a photocatalysis antimicrobial agent, and the rosemary essential oil is compounded; the antimicrobial property is still strong even under non-luminous conditions, and the antimicrobial compatibility is high; and meanwhile, the modified shale powder is added as a filler, so that the light resistance and adsorptivity of the material are improved, the prepared antimicrobial food packaging material has relatively stronger light resistance, the light resistance of the food is improved, and the shelf life of the food is prolonged.

Description

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

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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