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STUDIES ON THE AMYLASE ACTIVITY OF EDIBLE MOLLUSKS

Cen Liquan,Gu Xiaoying,You Zhongjie,Yu Fangping and Gong Songyan (Fisheries Dep. Ningbo University,Ningbo 315211)  
Amylase activity of 10 species of Common edible mollusks were investigated under different pH values and temperatures. The results were as following:1. The optimum temperature of amylase activity is 32℃ for Sinonovacula constricta, 33℃ for Cyclina sinensis,43℃ for Meretrix meretrix,35℃ for Gomphina veneriformis,34℃ for Ruditapes philippinarum ,37℃ for Moerella iridescens,43℃for Lunatica gilva and Thais clav-igera,40℃ for Bullacta exarata and 43 ℃ for Chlorostoma rusticum.2. The optimum pH value for amylase activity varies from 4. 6 to 6. 9.3. The amylase activities in two organs of one individual are different (liverintestine).
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