Method for fresh-keeping of aquatic product by electrolytic ice

Abstract

The invention relates to a method for fresh-keeping of an aquatic product by electrolytic ice. The method is characterized by comprising the steps of: at room temperature, subjecting an NaCl aqueous solution with a mass concentration of 0.08-0.20% to preparation of weak acidic electrolytic water through electrolytic water preparation equipment; filling the prepared weak acidic electrolytic water with a carbon dioxide gas, and further conducting freezing so as to obtain active electrolytic ice; leaching the fresh and live aquatic product with the prepared weak acidic electrolytic water 1-3 times rapidly, and then placing the aquatic product in the fishroom of a fishing workboat, a transportation or selling preservation box, a refrigerated transport vehicle or a supermarket freezer; and finally covering the aquatic product with a layer of active electrolytic ice. The method provided in the invention makes use of the electrolytic ice prepared by freezing of weak acidic electrolytic water to keep the freshness of the aquatic product, and can achieve a good sterilizing effect, thus effectively controlling pathogenic microorganisms in the aquatic product. Meanwhile, the fresh-keeping method has the advantages of simple process and low cost, solves the safety control problem of aquatic product pathogenic microorganisms, reduces wasting of fresh and live aquatic resources, and guarantees the quality safety of the aquatic product and its products as well as the fitness of consumers.

Description

technical field [0001] The invention belongs to the technical field of quality safety and control of aquatic products, and in particular relates to a method for using electrolytic ice to preserve fresh aquatic products. The prepared electrolytic ice is used to inhibit or kill pathogenic microorganisms in fresh aquatic products. Background technique [0002] Fresh aquatic products have high water content (70-80%), fragile tissues, easy for bacteria to invade, and are prone to spoilage and deterioration under the action of endogenous enzymes in the tissues. According to statistical analysis, about 20% of fresh and live aquatic products in my country have deteriorated due to corruption, and the annual economic loss is as high as 27 billion yuan. These rotten aquatic products are either directly discarded to pollute sea areas and ports or used as feed, resulting in serious loss of resources. Therefore, the preservation technology of fresh aquatic products has become an importan...

AI Technical Summary

Problems solved by technology

At present, domestic and foreign researches on the application of electrolyzed water are all focused on electrolyzed water with low acidity (pH<2.7), and the lower pH is just corrosive to the quality of food (especially aquatic products) and packaging and transportation materials. Among them, the available chlorine is extremely unstable, and the production cost of strongly acidic electrolyzed water is high, which greatly limits its application.

In addition, there are no reports on the application and research of electrolytic ice prepared by freezing electrolyzed water in aquatic products for preservation and sterilization.