Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (35): 38-42.doi: 10.11924/j.issn.1000-6850.casb15100085

Special Issue: 水产渔业

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Application of Cryoprotectant on Aquatic Products During Frozen Storage

  

  • Received:2015-10-21 Revised:2015-11-04 Accepted:2015-11-06 Online:2015-12-18 Published:2015-12-18

Abstract: Freezing preservation can maintain the nutrition value of aquatic products. But ice crystals in aquatic products are prone to grow during the frozen storage and have great impacts on the product quality. It could easily lead to the mechanical damage, protein denaturation, increase of drip loss and decline of flavor and nutrition. Adding cryoprotectant is considered to be one of the most effective ways to prevent frozen aquatic products from protein denaturation. In this paper, functional mechanism and characteristics of cryoprotectant were reviewed. Cryoprotectant can not only improve Ca2 -ATPase activity of aquatic products, but also increase pH and maintain the flavor and nutrition, furthermore, it could inhibit ice crystal growth and reduce muscle tissue damage. Then the application of cryoprotectants including saccharides, composite phosphates, protein hydrolysates and antifreeze proteins was summarized. Modern analytical techniques and methods should be applied to obtaining the dynamic changing characteristics of protein molecule in order to clarify the mechanism of protein denaturation in future researches.