Abdelsalam Adoum Doutoum, Abdelsalam Tidjani, Hamadou Abba, Couba Faye, Mg. Seidy & Bhen Sikina Toguebaye
The study of initial contamination of tropical sea fish has included 100 samples of red mullet (Pseudupeneus prayensis). The samples were taken from the flesh and the gills. The initial contamination bacteria are constituted by: Mesophile Flora Total Aerobic at 30 ° C (FMAT) and Aerobic Flora Psychrotrophe at 5 ° C (FMP), FMAT predominates in flesh and gills with an average of 2.6 x 102 CFU/g of meat versus 0.6 x 102 CFU/g of meat for FAP. At the gill level, an average of 1.2 x 104 CFU/g was obtained for the FMAT against 0.3x 104 CFU/g for the FAP. Enterobacteriaceae absent in the flesh contaminate the gills with an average of 2.7.x 103 CFU/g. E. coli was isolated at a rate of 8% by the Mackenzie test. Pseudomonas are almost absent in the flesh (2.4 CFU/g) and are more important in the gills (102 CFU/g). Vibrios are present in the flesh and gills respectively in 51% and 76% of the samples. 59 samples carry V. alginolyticus in flesh and gills. 6 samples carry V. parahaemolyticus in the gills only. In view of these results, the storage under ice of the fish must be done at an early stage, immediately after catching in order to avoid the proliferation of the flora. The early delimbing of the fish makes it possible to avoid the spread of the germs towards the flesh.
Published Date: 2018-02-13;