Abstract
The microbiological quality of frozen raw and cooked shrimps destined for import and export was determined. The total number of frozen shrimp samples tested were 657 comprising 54 (FW) freshwater shell-on, 29 freshwater peeled deveined, 123 seawater (SW) shell-on, 410 seawater peeled deveined, and 41 seawater cooked. The geometric means for APC g −1, coliform counts (MPN g −1) and E. coli counts (MPN g −1) were, respectively, FW shell-on, 890 000, 82 and 14; FW peeled deveined, 430 000, 16 and 5; SW shell-on, 310 000, 10 and 3; SW peeled deveined, 410 000, 9 and 3 and seawater cooked 7000, 4 and 3. 653 (99%) of the samples had S. aureus counts of less than 50 MPN g −1. Shigella and Vibrio cholerae were not detected and Salmonella was positive for 3 (0·5%) of the 657 samples tested.
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