Bacteriological load of the fishes Cynoscion squamipinnis and Lutjanus gutattus in the marketing chain, Costa Rica

8 pages, 3 figures, 3 tables[EN] To determine the bacteriological quality of fishery products in the different stages from commercialization, monthly samples were taken during March 2004 and February 2006 from a Costa Rica marketing chain. Microbiological analyses were made to determine total coliforms (CT), faecal coliforms (CF), Escherichia coli (EC), aerobic total count (RTA), Salmonella sp., Staphylococcus aureus, Vibrio cholerae and Vibrio parahaemolyticus. Three body zones were analyzed: skin, belly and muscle. There were differences in the amount of CT between parts: skin had the highest counts, 11% of samples were identified as E. coli. and 2.5% of total counts were higher than the legal limit. Only 1.3% of the samples were S. aureus-positive. Salmonella sp., V. cholerae and V. parahaemolyticus were absent[ES] Con el fin de determinar la calidad bacteriológica de los productos pesqueros en las diferentes etapas de comercialización, desde marzo del 2004 y hasta febrero del 2006, recolectamos muestras mensuales y realizamos análisis microbiológicos para determinar coliformes totales (CT), coliformes fecales (CF), Escherichia coli, recuento total aerobio (RTA), Salmonella sp., Staphylococcus aureus, Vibrio cholerae y Vibrio parahaemolyticus en la piel, el vientre y la carne de los productos. Hubo diferencias en la cantidad de CT encontrada entre las diferentes zonas corporales muestreadas, siendo la piel la zona con mayor conteo. En el 11% de las muestras identificamos E. coli y el 2.5% de los recuentos totales superaron los límites máximos aceptados. Salmonella sp., V. cholerae y V. parahaemolyticus estuvieron ausentes, mientras que sólo el 1.3% de las muestras fueron positivas para S. aureusPeer Reviewe

Carga bacteriana de los peces Cynoscion squamipinnis (Perciformes: Scianidae) y Lutjanus gutattus (Perciformes: Lutjanidae) en la cadena de comercialización, Costa Rica

To determine the bacteriological quality of fishery products in the different stages from commercialization, monthly samples were taken during March 2004 and February 2006 from a Costa Rica marketing chain. Microbiological analyses were made to determine total coliforms (CT), faecal coliforms (CF), Escherichia coli (EC), aerobic total count (RTA), Salmonella sp., Staphylococcus aureus, Vibrio cholerae and Vibrio parahaemolyticus. Three body zones were analyzed: skin, belly and muscle. There were differences in the amount of CT between parts: skin had the highest counts, 11% of samples were identified as E. coli. and 2.5% of total counts were higher than the legal limit. Only 1.3% of the samples were S. aureus-positive. Salmonella sp., V. cholerae and V. parahaemolyticus were absent.Con el fin de determinar la calidad bacteriológica de los productos pesqueros en las diferentes etapas de comer- cialización, desde marzo del 2004 y hasta febrero del 2006, recolectamos muestras mensuales y realizamos análisis microbiológicos para determinar coliformes totales (CT), coliformes fecales (CF), Escherichia coli, recuento total aerobio (RTA), Salmonella sp., Staphylococcus aureus, Vibrio cholerae y Vibrio parahaemolyticus en la piel, el vientre y la carne de los productos. Hubo diferencias en la cantidad de CT encontrada entre las diferentes zonas corporales muestreadas, siendo la piel la zona con mayor conteo. En el 11% de las muestras identificamos E. coli y el 2.5% de los recuentos totales superaron los límites máximos aceptados. Salmonella sp., V. cholerae y V. parahaemolyticus estuvieron ausentes, mientras que sólo el 1.3% de las muestras fueron positivas para S. aureus