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Foodborne Pathogens in Retail Oysters in South China
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作者 YAN CHEN XIU-mei LIU +4 位作者 JI-WEN YAN XIU-GUI LI ling-ling mei QUN-FEI MA YI MA 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2010年第1期32-36,共5页
Objective To investigate the occurrence of important foodbome pathogens in shellstock Pacific oysters in the food markets in South China. Methods From July 2007 to June 2008, retail oysters were collected in different... Objective To investigate the occurrence of important foodbome pathogens in shellstock Pacific oysters in the food markets in South China. Methods From July 2007 to June 2008, retail oysters were collected in different seasons from South China and analyzed for the prevalence and levels of Listeria monocytogenes, Vibrio vulnificus and Vibrio parahaemolyticus. Results None of L. monocytogenes could be detected in any of the 202 oyster samples tested, while E vulnificus and E parahaemolyticus could be detected in 67 (54.9%) and 109 (89.3%) of the 122 oyster samples analyzed, respectively, with an MPN (most probable number) value greater than or equal to 3. V. wdnificus and Eparahaemolyticus with a more than 102 MPN/g were found in 36 (29.5%) and 59 (48.4%) of the 122 oyster samples, respectively. The tdh and trh genes were detected in 4 (0.3%) and 8 (0.6%) of the 1 349 V. parahaemolyticus isolates, respectively. Of the 122 samples, 4 (3.3%) was positive for either tdh or trh. The levels of E vulnificus and total V. parahaemolyticus in oysters in South China varied in different seasons. Conclusion V. vulnificus and pathogenic V. parahaemolyticus are frequently found in oysters in south China, which may pose a potential threat to public health. Data presented here will be useful for the microbiological risk assessment in oysters in China. 展开更多
关键词 Listeria monocytogenes Vibrio vulnificus VIBRIOPARAHAEMOLYTICUS OYSTER Microbiological risk assessment
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