Meat food preservation device and meat food shelf life extension method

Abstract

The invention discloses a meat food preservation device which comprises a vacuum chamber. An upper high-voltage electrode and a lower high-voltage electrode are vertically oppositely arranged in the vacuum chamber, the periphery of the upper high-voltage electrode is coated with an upper dielectric barrier layer, the periphery of the lower high-voltage electrode is coated with a lower dielectric barrier layer, ultraviolet visible lamps are arranged on the lower portion of the upper dielectric barrier layer, a sample is placed on the lower dielectric barrier layer, and the vacuum chamber is communicated with a liquid nitrogen container and a liquid oxygen container through mixers. The invention further discloses a meat food shelf life extension method. Used liquid nitrogen plasma treatmentconditions are mild, cold states are maintained in sterilization, the meat food shelf life extension method is an effective cold sterilization technology and quite suitable for antibacterial preservation of fresh meat, and the shelf life of fresh meat food is prolonged by 12 days or more.

Description

technical field [0001] The invention relates to the field of meat food preservation, in particular to a meat food preservation device and a method for extending the shelf life of meat food. Background technique [0002] In the process of storage, transportation and sales of meat products, the pollution and reproduction of microorganisms and the oxidative rancidity of lipids are two factors that cause the quality of meat products to decline. At present, the sterilization and preservation of food can be summarized into two methods: heat sterilization and cold sterilization. Traditional heat sterilization will reduce the physical and chemical quality and sensory quality of food, especially not suitable for heat-sensitive products. In recent years, plasma sterilization technology, as a non-thermal sterilization technology, has significant advantages especially for heat-sensitive foods and has received widespread attention. For example, patent 201610898085.9 discloses a cold-sou...

AI Technical Summary

Problems solved by technology

However, the excitation of nitrogen is usually accompanied by the breaking of the nitrogen-nitrogen triple bond, which will release a large amount of heat during the excitation process, which not only usually makes the generated plasma temperature too high, but also has the problem of high excitation voltage.

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