Study on the fresh-keeping effect of partial freezing on Scapharca subcrenata

In this paper, an experimental investigation on the fresh-keeping effect on Scapharca subcrenata under partial freezing (at temperature ranges of (-3°C±1°C) was briefly introduced. Composite biological preservative was adopted to keep Scapharca subcrenata fresh under partial freezing holding TVBN value, TBA value and Ca²⁺-ATPase as the freshness index. The result of experiment showed that effect of composite biological preservative was better than that of the blank control group and Group 4(complex fresh-keeping agents and modified atmosphere) was the best one. In this group the shelf life was prolonged to 30d, compared with the blank control, Group 4 was nearly 15d longer.