Device, fresh-keeping storage and transportation vehicle and fresh-keeping method for surrounding type dielectric barrier discharge (DBD) low-temperature plasmas

Abstract

The present invention belongs to the field of fresh-keeping of fruits and vegetables and relates to a device for surrounding type dielectric barrier discharge (DBD) low-temperature plasmas. The devicecomprises a container cover, a container body, positive electrodes, negative electrodes, discharge media, a net partition plate, a transformer and a pulse power supply, wherein the positive electrodes and negative electrodes are arranged at intervals around an inside of the container body; discharge regions are formed between the adjacent positive electrodes and negative electrodes; the positiveelectrodes and the negative electrodes are connected with the transformer and the pulse power supply; the discharge media cover left and right side surfaces of the positive electrodes; insulating sealing caps are arranged at upper and lower ends of the discharge media; the container cover is positioned above the container body and can be separated from the container body; air inlets are uniformlyformed in a periphery of the container cover; and the net partition plate is used for preventing the fruits and vegetables from contacting with the positive electrodes, the negative electrodes and thedischarge regions and guaranteeing stability of discharge and safety of the device. The device for the surrounding type DBD low-temperature plasmas is small in occupied space, wide in processing areaand uniform in processing effect. The present invention further provides a fresh-keeping storage and transportation vehicle and a fresh-keeping method for the surrounding type DBD low-temperature plasmas.

Description

technical field [0001] The invention relates to the field of fresh-keeping of fruits and vegetables, in particular to a wrap-around DBD low-temperature plasma device, a fresh-keeping storage vehicle and a fresh-keeping method. [0002] technical background [0003] Litchi is a characteristic fruit in South China. It is loved by people because of its bright red skin appearance, pleasant aroma and rich nutritional quality. As the saying goes, "Eating three hundred lychees a day will make you a Lingnan native." But lychee is a kind of fruit that is difficult to store, and the annual spoilage loss rate is about 20%. Litchi has a concentrated maturity period, strong respiration, and the peel is very easy to lose water, and it is also vulnerable to microorganisms. The most important cause of litchi deterioration is enzymatic browning dominated by endogenous enzymes such as polyphenol oxidase and peroxidase. "Litchi Picture Preface" has a saying: "If you leave the original branch,...

AI Technical Summary

Problems solved by technology

Chemical reagents can inhibit enzyme activity, but chemical residues will endanger the health of fruit growers and consumers

In addition, lychees begin to brown from the moment they leave the branches, and technologies such as refrigeration and air conditioning are mostly used in the subsequent storage and transportation processes, and it is impossible to achieve freshness at the source in the forest

In short, today's fresh-keeping technology cannot meet the needs of litchi fresh-keeping, and new fresh-keeping methods are urgently needed to make up for the shortcomings of current methods.

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