Preparation method of biological preservative for Penaeus vannamei

Abstract

The invention discloses a preparation method of a biological preservative for Penaeus vannamei. The compound biological preservative contains the following ingredients in percentage by weight: 0.06% of phytic acid, 0.15% of glucose oxidase, 0.02% of lysozyme and the balance of water. The solution of the compound biological preservative is processed into ice cubes by using an ice-making machine, the volume of the ice cube is 1 cm*1 cm*1 cm, and the ice cubes made of the preservative solution are used for keeping Penaeus vannamei fresh. According to the sensory evaluation of Penaeus vannamei and the detections of pH, total volatile basic nitrogen (TVB-N), total plate count and trimethylamine indices, the biological preservative is proved to effectively prevent spoilage and deterioration of Penaeus vannamei and prevent browning due to oxidation. Compared with the cold-storage using pure-water ice cubes, the shelf life of Penaeus vannamei is increased by 7 to 8 days. The preparation of the preservative solution is simple and feasible, the storage using the ice cubes is well controlled within the ice-temperature range, and the method has a certain value for application and promotion.

Description

technical field [0001] The invention relates to the technical field of food and drug biological preservation, in particular to the field of antistaling agents suitable for Penaeus vannamei, and a preparation method of the biological antistaling agent for Penaeus vannamei. Background technique [0002] Penaeus vanmamei is a creature native to the waters of the Pacific coast of South America. Since it was introduced in my country in the 1990s, its production scale has continued to expand, and it has now become the country with the largest breeding area and the highest output in the world. . Penaeus vannamei is rich in protein, low in fat, and delicious in meat quality. It is very popular with consumers. However, Penaeus vannamei is a perishable food. During fishing, transportation, processing and storage, the solution turns black and spoils, reaching the consumption level. The situation is unacceptable to the marketers, resulting in a great waste of resources, which greatly af...

AI Technical Summary

Problems solved by technology

[0006] The cold storage time is short, and the spoilage is fast; although the freshness index can be maintained for a long time in frozen storage, the physical and chemical indicators are severely reduced, and the loss of nutrients is intensified, especially the loss of nutrients caused by the thawing process is serious.

The increasingly popular ice temperature preservation technology is getting more and more attention from people, but it is difficult to accurately control the temperature of the ice temperature process. There are certain temperature fluctuations in the existing refrigeration equipment, and the temperature fluctuation is very unfavorable to the preservation of Penaeus vannamei