Prevalence of aeromonas hydrophila and yersinia enterocolitica in some seafoods sold in sharkia governorate markets and the effects of heat treatments on their viabilities

Abstract

Atotal of 120 samples of fresh mullet, frozen tilapia fillet and chilled shrimps (40each)were collected from the markets of sharkia governrate for surveying the organisms of aeromonas hydrophila and yersinia enterocolitica in their flesh. Aeromonas orlevels of total colony count were 4.91+0.247, 4.383+0.463and 4.44+0.125 log GFU/g respectively. Such organisms were identified as aeromonas hydrophila, A. caviae and A.sibria with acommon prevalence for A. hydrophila. The present investigation revealed also that both of A. hydrophila and Y. enterocolitica were sensive to heat treatment. Thus, good ripening of sea foods is adequate to control of these microorganisms.