Food refrigeration and fresh-keeping method

Abstract

The invention provides a food refrigeration and fresh-keeping method, and belongs to the technical field of refrigeration and fresh keeping. The specific method comprises the steps: selecting fresh fruits, transporting to a cool place timely after harvesting, carrying out quality grading, and eliminating defective products; soaking the fruits in washing water of rice, and 25-30 min later, cleaning with sterile water, to obtain fruits treated by the washing water of rice; preparing a mixed enzyme solution, coating the surface of the fruits treated by the washing water of rice with the mixed enzyme solution, placing for 1-2 h, then carrying out sterile cleaning to obtain enzyme-treated fruits, spraying the surface of the enzyme-treated fruits with a 0.2 mol / L sodium bicarbonate solution, finally, cleaning cleanly with pre-cooled sterile water to obtain sterilized fruits, soaking for 0.5-1 min in a fresh-keeping solution, then fishing up, and air-drying; and loading the fruits after being soaked in the fresh-keeping solution into polyethylene thin film fresh-keeping bags, putting the packaged fruits in a refrigeration house, and refrigerating with the refrigeration temperature of 0-4 DEG C.

Description

technical field [0001] The invention belongs to the technical field of refrigeration and preservation, and in particular relates to a method for refrigeration and preservation of food. Background technique [0002] Fruit and vegetable production is one of the characteristic agricultural industries and plays an important role in agricultural production. Due to the seasonality, regionality and diversity of fruit and vegetable production, the off-season and peak season of fruit production are obvious. Fruits and vegetables are fresh products with tender tissues, high water content, perishable deterioration, and not resistant to storage and transportation. They are easy to lose their freshness and reduce their quality after harvest, thereby reducing or losing their nutritional value and commodity economic value. In order to enable people to obtain a balanced supply of fruits and vegetables, in addition to strengthening off-season planting, annual stubble arrangements, promotion...

AI Technical Summary

Problems solved by technology

[0003] At present, fresh fruits and vegetables are cooled and refrigerated during the period of sorting and refrigerating. Although it can slightly prolong the preservation time of fruits and vegetables, it only suppresses the respiration of fruits or vegetables from the aspect of temperature. There will still be a large amount of water loss in fruits and vegetables, resulting in dry consumption, rot and deterioration of fruits or vegetables, seriously affecting their quality and sales, and bringing huge losses to business operators, and the power consumption is large, which greatly increases refrigeration cost

[0004] Therefore, existing refrigerated and fresh-keeping technology can not satisfy people's demand, urgently needs a kind of food refrigerated and fresh-keeping method that can keep fresh and harmless to fruit