Résumé:
The mackerel Scomber japonicus (Houttuyn, 1782) is an important source of animal
protein for the populations. In order to evaluate the microbiological quality of this fish sold to
consumers, a microbiological study was conducted on 13 samples of mackerel caught in the
Mostaganem area. Research conducted at the Fisheries Laboratory of Mostaganem University
has revealed a presence of germs impairing quality. Microbiological analyzes have shown that
the quality of the mackerel samples is unsatisfactory in the following proportions: 2,39,109
germe / gram and a drop to 10,107 germe / gram for aerobic mesophilic bacteria and 30 germe
/ gram up to 1,240,103 germe / gram for total coliforms, 10 germe / gram up to 1.15 .103
germe / gram for faecal coliforms and 20 CFU / gram up to 2.40 .102 CFU / gram for yeast
and 2 CFU / gram for mold. In addition, two of the mackerel samples analyzed were
contaminated with sulphite reducing anaerobic germs. Salmonella spp. And Staphylococcus
aureus were not detected.
