Microbiological quality of filleted fish with special reference to listeria monocytogenes

الملخص EN

-Imported (Saba) and local {tilapia nilotica and Nile perch) flitted fish (60 samples) were analyzed for aerobic colony count (ACC), total coli form count and for presence of listeria monocytogenes to detect their quality.

.imported flitted fish samples were lower in aerobic colony count, coli form count and also in listeria monocytogenes incidence.

Aerobic colony count • (acc) was 3.3±7.7xl06cfu/g in imported (Saba) filleted fish, j1 ^±4.0x107and 1.

8±5.

Ox 107 CFU /g in local filleted tilapia nilotica and Nile perch, respectively.

Coli forms counts were 1.3±2.8xl02, 4.3±8.4xl02 and CFU/g in imported (Saba) filleted, local filleted tilapia nilotica and Nile perch, respectively.

The overall incidence of Listeria monocytogenes was 6.7% in imported flitted fish samples, 23.3% in local flitted fish samples (26.7% in flitted tilapia nilotica samples and 20% in Nile perch samples), which was indentified by conventional PCR reaction.