Changes of Physicochemical properties During Storage at an Aquarium Tank of Wild and Cultured Gray mullet (Mugil cephalus) and Red seabream (Pagrus major)

횟집 수조 보관 중에 자연산, 양식산 참돔 및 숭어의 물리·화학적 성분변화

  • Received : 2009.08.15
  • Accepted : 2009.10.01
  • Published : 2009.10.31

Abstract

The purpose of this study is to analyze the nutrition composition and physiological changes, and to evaluate the food quality of live fish in cultured and wild fishes which have been kept in an aquarium tank. The moisture and lipid content of wild and cultured fishes when kept in an aquarium tank for seven-days storage was found to be lower than those of the initial stage storage(zero day). The breaking strength was also rapidly decreased in all of live fishes tested in this study as the periods of storage extended. The protein content did not differ significantly. However, the content of cortisol, which is a indicator indicating a stress reaction in tissues, was apt to increasing as the periods of storage extended. The cortisol content of wild fishes were higher than those of cultured fishes. On the other hand, the activity of activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), which is also a indicator indicating a stress reaction, were not changed in the serum of wild and cultured fish, suggesting the ALT and AST activity dose not directly related with a healthy loss originated from stress. The death ratio of wild fishes were higher than cultured ones due to limited activity and stress during the storage in a aquarium tank.

Keywords

Acknowledgement

Supported by : 부경대학교

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