Preservation and cold storage process of Chinese cabbages

Abstract

The invention relates to a preservation and cold storage process of Chinese cabbages. The process comprises the following steps: pretreatment of Chinese cabbage raw materials, pre-cooling and degerming of the Chinese cabbage materials, primary cold storage before cold storage of the Chinese cabbages, multi-stage heating of the Chinese cabbages subjected to primary cold storage and dry fog humidity-controlled cold storage. The preservation and cold storage process of Chinese cabbages is simple and easy to conduct and obvious in effects, cold storage processes including pre-cooling, quick primary cold storage, multi-stage heating and the like are arranged, multilayer superposition among non-woven fabrics is substituted for stacking and piling, the gas ratio of a refrigerated warehouse is adjusted, and a technological method of ozone introduction and continuous dry fog spraying and water retaining is adopted, thereby eliminating the dependence of cold storage of Chinese cabbages on low temperature to the maximum extent, and overcoming the defects of a traditional low-temperature cold storage method of Chinese cabbages on the premise of ensuring fresh quality of vegetables.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a fresh-keeping and cold storage process for Chinese cabbage. Background technique [0002] With the development of agricultural technology and the increase of vegetable production, a large number of vegetables need to be preserved by cold storage. The vegetable refrigeration process can keep the color, aroma, taste and freshness of fruits and vegetables for a long time without being restricted by seasons, and the frozen vegetables are always controlled in a low-temperature environment, and various biochemical reactions inside them are also inhibited. The nutrition in the vegetables will be lost, and it is a convenient food with development prospects. The traditional cold storage process of cabbage has relatively high requirements for raw materials, which need to be of good quality, appropriate maturity, uniform size, no pests, and no pollution. After harvesting, it is required no...

AI Technical Summary

Problems solved by technology

Moreover, the traditional cabbage cold storage process has the following problems. Palletizing cabbage is easy to overlap and press, and it takes up a lot of space, storage and transportation efficiency is low, and circulation costs are high.

In addition, fresh cabbage needs a high-humidity storage environment to keep it, but if it is kept in a common cold storage below 0°C, the cabbage is in danger of freezing. The air will intensify the evaporation of water inside the cabbage, thereby accelerating the rate of water loss, resulting in weight loss and economic value reduction of refrigerated cabbage and other products out of the warehouse

In the current new invention, most of the refrigeration methods in the prior art use fruits and vegetables as preservation objects, such as Chinese patents CN104522550, CN102302050, and CN103039590 respectively disclose several refrigeration methods for fruits and vegetables, which use skinned fruits and vegetables as refrigeration objects , the way of warehousing is still palletized and stacked, and the technical processes in cold storage and water retention cannot be equally applied to the field of vegetable cold storage with leaves as the main body