Low-temperature plasma device used for food sterilization and freshness retaining

Abstract

A low-temperature plasma device used for food sterilization and freshness retaining includes a supporting plate for placing food, a plasma generation device, a shell, a door and a circuit control module. The supporting plate and the plasma generation device are connected through an insulating medium, spray points of the plasma generation device are welded on a metal plate, the metal plate and a ground electrode are connected through an insulating medium, the spray pints are arranged in centers of circular holes of the ground electrode, the metal plate is connected with a high voltage end which is connected with a high voltage power supply, and the ground electrode is connected to the ground. The device generates plasma through a special discharge structure, utilizes ionic wind to drive flow of air, some active ingredients in the plasma react with microorganisms on the surface of food, thereby killing the microorganisms, the active ingredients react with some enzymes inside the food, thereby inhibiting activity of the enzymes, the decomposition rate of organic matter is slowed down, food and daily utensils are sterilized, and the shelf life of food can be prolonged, thereby realizing sterilization and freshness retaining of food under a low-temperature condition.

Description

technical field [0001] The invention relates to the technical field of food disinfection and preservation, in particular to a low-temperature plasma device for integrating food disinfection and preservation. Background technique [0002] During the food storage process, due to environmental impact or long storage time, some foods will deteriorate or rot. There are three main reasons for food deterioration: 1. Microbial decomposition: Microorganisms exist everywhere in the environment. Food is easily contaminated by microorganisms during production, processing, transportation, and storage. As long as the temperature is appropriate, microorganisms will grow and reproduce in large numbers and decompose Nutrients in food and protein in food will emit foul and sour taste after being destroyed; 2. Enzyme action: Under the action of various enzymes, the nutrients in food are decomposed into a variety of products, and the rice becomes rancid, Fruit rot is caused by carbohydrates be...

AI Technical Summary

Problems solved by technology

Traditional fresh-keeping and sterilization methods include sulfur dioxide fumigation, ultraviolet light, etc., but these methods generally have disadvantages such as high cost, residual chemical substances, and unsatisfactory sterilization effects.

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