QUALITY-CONTROL OF SEAFOOD .2. ADVANTAGE AND LIMITATION OF MICROBIOLOGICAL ASSAY AND CHEMICAL-ANALYSIS

This paper describes the results obtained during the investigation of 56 samples of marine fishes belonging to the most current species. All samples were submitted to microbiological assay and to chemical analy sis (ABVT, histamine). Analysis were performed with samples maintained at ambient temperature during 32 hours. The results demonstrated that the fishes reached to thresold of reject after 8 hours. The experimen tal data showed a linear correlation between the level of alteration a nd both bacteriological numerations and chemical analysis (ABVT and hi stamine concentrations). However this linear relation appears in two p hases before and after the thresold of reject. On the other hand, our results clearly demonstrate the presence of faecal colibacillus from h uman origin. Finally our experiment underline the interest and limits of each criteria.