Fresh-cut-water-chestnut preservation method

Abstract

The invention relates to a fresh-cut-water-chestnut preservation method. The fresh-cut-water-chestnut preservation method includes the steps that (1) soil on water chestnut peels is removed, and obtained water chestnuts are soaked with ozone water and finally washed with clear water; (2) the whole water chestnuts are put into hot water for soaking; (3) the water chestnuts obtained after heat treatment are naturally dried with air; (4) the water chestnut peels are removed, and the peeled water chestnuts are washed with clear water; (5) the peeled water chestnuts are placed into a mixed solution containing citric acid, malic acid and water chestnut peel extract; (6) the fresh-cut water chestnuts are coated with chitosan and then blown to be dry through cold air; (7) the fresh-cut water chestnuts obtained after cold-air blowing drying are packaged through a vacuum packaging machine in 20 minutes, and finished products are obtained. According to the method, the browning degree and the weight loss ratio of the fresh-cut water chestnuts in the storage process can be reduced, influences on the taste of the water chestnuts are small, the storage period under the storage condition of 4 DEG C can be 40 days or above, and the demands of remote transportation and selling are basically met.

Description

technical field [0001] The invention belongs to the technical field of food preservation, and in particular relates to a fresh-cut water chestnut preservation method. Background technique [0002] Water chestnut (Eleocharis tuberosa), also known as horseshoe, belongs to the perennial shallow water herb of Cyperaceae. Water chestnuts are rich in nutrition, juicy and sweet, and have the reputation of "Underground Sydney" and "Jiangnan Ginseng". The planting area of ​​water chestnuts in my country is about 30,000 hectares, and the output accounts for more than 95% of the world. The planting area and total output of water chestnuts in Guangxi rank among the top in the country. Among them, Hezhou and Guilin are the "hometowns of Chinese horseshoes", and the planting area of ​​water chestnuts exceeds 400,000 mu. , the output exceeds 800,000 tons, and the output of water chestnuts accounts for more than 70% of the country. Fresh-cut water chestnuts are more and more favored by con...

AI Technical Summary

Problems solved by technology

This heat treatment method will adversely affect the quality of fresh-cut water chestnuts, and it is easy to damage the pulp during the heat treatment process, which is not conducive to extending the shelf life