Pangasius hypophthalmus fillets, classified according to different frozen technologies, were subjected to microbiological (Psychrophilic Total Aerobic Count = PTAC, Enterobacteriacea, Staphylococcus aureus, Salmonella spp. and Listeria monocytogenes) and chemical analyses (Hg, Pb, Cd and six “indicator” congeners of polychlorinated biphenyls=PCB6). Mean count of psychrophilic aerobic total bacteria, Enterobacteriaceae and S. aureus in all samples examined was 4.44 log CFU/g, 2.16 log CFU/g and 1.07 log CFU/g, respectively. Any sample showed the presence of Salmonella, while L. monocytogenes was encountered in 2.1% of samples tested. The microbiological counts were different among fillet categories, but with values always lower than the limit of ICMSF. Also the chemical quality of processed products is satisfactory being the concentrations of all metals and six “indicator” PCBs below safety levels for human consumption. This study has contributed to addressing the current paucity in literature on the microbial and chemical status of frozen P. hypophthalmus fillets.
ASPECTS OF VIETNAMESE SUTCHI CATFISH (PANGASIUS HYPOPHTHALMUS) FROZEN FILLET QUALITY: MICROBIOLOGICAL PROFILE AND CHEMICAL RESIDUES
NORMANNO, GIOVANNI GIUSEPPE;
2016-01-01
Abstract
Pangasius hypophthalmus fillets, classified according to different frozen technologies, were subjected to microbiological (Psychrophilic Total Aerobic Count = PTAC, Enterobacteriacea, Staphylococcus aureus, Salmonella spp. and Listeria monocytogenes) and chemical analyses (Hg, Pb, Cd and six “indicator” congeners of polychlorinated biphenyls=PCB6). Mean count of psychrophilic aerobic total bacteria, Enterobacteriaceae and S. aureus in all samples examined was 4.44 log CFU/g, 2.16 log CFU/g and 1.07 log CFU/g, respectively. Any sample showed the presence of Salmonella, while L. monocytogenes was encountered in 2.1% of samples tested. The microbiological counts were different among fillet categories, but with values always lower than the limit of ICMSF. Also the chemical quality of processed products is satisfactory being the concentrations of all metals and six “indicator” PCBs below safety levels for human consumption. This study has contributed to addressing the current paucity in literature on the microbial and chemical status of frozen P. hypophthalmus fillets.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
