Temperature effects on the growth and survival of tdh positive Vibrio parahaemolyticus in tissues of postharvest Manila clam (Ruditapes philippinarum)
Fecha de publicación
2017-10-31ISSN
0740-0020
Resumen
Bivalve storage at inadequate temperatures contains greater densities of Vibrio parahaemolyticus. The objective of the present study was to determine if there were any differences in growth and survival of potentially pathogenic V. parahaemolyticus (tdh positive) in relation to nonpathogenic V. parahaemolyticus (tdh-trh negative) levels in Manila clams (Ruditapes philippinarum) when exposed to different postharvest temperatures. Clams were depurated then exposed to known doses of both potential pathogenic and nonpathogenic V. parahaemolyticus for 24 h. Clams were then kept at the following temperatures corresponding to the Mediterranean summer (28 °C), winter (15 °C) and refrigeration (4 °C) for 96 h. Vibrio parahaemolyticus densities were determined at 0, 24, 48, 72 and 96 h of postharvest storage. Both isolates of V. parahaemolyticus multiplied rapidly in live clams held at 28 °C, (increase of 3 logs CFU/g at 72 h). Nonpathogenic V. parahaemolyticus in clams stored at 4 °C and 15 °C showed 1 log CFU/g and 2 log CFU/g decrease at 96 h, respectively, while no significant differences were detected for pathogenic V. parahaemolyticus at these temperatures after 96 h.
Tipo de documento
Artículo
Versión del documento
Versión aceptada
Lengua
English
Materias (CDU)
639 - Caza. Pesca. Piscicultura
Páginas
17
Publicado por
Elsevier
Publicado en
Food Microbiology
Citación
Lopez-Joven, Carmen, Ignacio de Blas, and Ana Roque. 2018. "Temperature Effects On The Growth And Survival Of Tdh Positive Vibrio Parahaemolyticus In Tissues Of Postharvest Manila Clam ( Ruditapes Philippinarum )". Food Microbiology 75: 61-64. Elsevier BV. doi:10.1016/j.fm.2017.10.016.
Número del acuerdo de la subvención
INIA-FEDER/Programa Nacional de Recursos y Tecnologías Agroalimentarias/RTA2005-00079-00-00/ES/Detección y caracterización de las bacterias del género Vibrio potenciales causantes de cuadros diarreicos en la especie humana presentes en los bivalvos de cultivo en las bahias de Alfacs i Fangar (Tarragona)/
INIA-FEDER/Programa Nacional de Proyectos de Investigación Fundamental/RTA2008-00063-00-00/ES/Estudio de las bacterias diarreicas provenientes de bivalvos cultivados en las bahías del Delta del Ebro, Tarragona/
Program
Aqüicultura
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