Antibacterial food packaging material having large toughness and preparation method thereof

Abstract

The invention discloses an antibacterial food packaging material having large toughness. The antibacterial food packaging material is prepared from, by weight, 100 parts of low-density polyethylene, 2.3-2.6 parts of nano zinc oxide, 5.6-6.2 parts of oregano vulgare essential oil, 1-3 parts of attapulgite, 12-14 parts of Java cotton, 2-4 parts of maltitol, 5.7-5.9 parts of 3-amino propyl triethoxy silane, 0.7-0.9 part of calcium sorbate, 1.1-1.4 parts of barium sulfate, 0.4-0.6 part of sodium citrate and a proper amount of water. The antibacterial food packaging material uses the low-density polyethylene as a basic material, uses the nano zinc oxide subjected to silane coupling agent activating treatment as a photocatalytic antibacterial agent, and the oregano vulgare essential oil is compounded. Even under the nonluminous condition, the antibacterial food packaging material still has stronger antibacterial properties and wide antibacterial spectrum. In addition, the added modified attapulgite serves as a packing, the adsorbability is strong, the prepared antibacterial food packaging material has large toughness, the antibacterial substances have a certain volatility, and the expiration date and shelf life of foods can be prolonged.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to an antibacterial food packaging material with high toughness 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 ...

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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