Prevalence of psychrotrophic food borne pathogens in fish in Alexandria markets

Abstract EN

One hundred samples of fish represented by SO samples of Tilapia Nilotic a and SO samples of Claris laser were collected tram different fish markets in Alexandria Governorate to evaluate their microbiological quality and detection of food borne psychrotrophs.

The bacteriological examination revealed mat the mean values of total psychrotrophic count, total Pseudomonas count and total Bacillus cereus count in Tilapia nilotica were 3.2X102 ± 1.3 X 102, 4.5 X 103 ± 1.3 X 103 and 3 X 103 ± 3.6 X 102 respectively.

The majority of Tilapia Nilotic a fish samples had psychotropic count ranged from 104 to < 105.

While, the majority of such examined fish samples had Pseudomonas and Bacillus cereus count between 103 to 104.

Furthermore, the average counts of psychrotrophics, Pseudomonas and Bacillus cereus for Claris laser were 2.5 X 104 ± 3.6 X 103, 6.8 X 103 ± 1.2X103 and 8.6 X 102 ± 2.1 X 102 respectively.

The public health significance of the isolated microorganisms and possible sources of contamination of fish with such organisms as well as some recommendations to improve the quality of fish were discussed.