Effects of Storage Conditions on Total Number of Bacteria and Coliform Group in Shellfish

In order to investigate the changing trend of microorganisms in shellfish,total number of bacteria and coliform in 3 species of shellfish such as Ruditapes philippinarum,Chlamys farreri and Solen gouldii Conrada stored at-18,4,15 ℃ and 22 ℃ for different periods were determined.Results indicated that an obvious decrease in total number of bacteria in shellfish stored at-18℃ for more than 24 h was observed;in contrast,no obvious change in shellfish stored at other temperature conditions for 12 h or at 4 ℃ for 24 h was observed.Moreover,a positive correlation between total number of bacteria and coliform group in shellfish stored at 22 ℃ was also observed.Taken together,the original status of microorganisms present in shellfish can be remained for a longer period of time at the environmental condition of 0 ℃.