서해안(강화도, 이원면, 곰소만 해역) 패류에 대한 위생학적 안전성 평가 및 인공정화 연구
Evaluation of Microbiological Safety and Artificial Depuration System for Shellfish in the West Coast, Korea
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In this study, the hygiene indicator bacteria and pathogenic bacteria in shellfish (oysters and short-neck clams) pro duced on the West Coast were analyzed. In addition, this study aimed to secure the microbiological safety of dis tributed shellfish by reducing the number of microorganisms in the shellfish using an artificial relaying depuration system. Fecal coliforms and Escherichia coli of the shellfish examined ranged from <18 to 1,300 MPN/100 g and <18 to 700 MPN/100 g, respectively, with total aerobic bacteria ranging from <30 to 36,000 CFU/g. For Vibrio parahaemolyticus, <30 to 11,000 MPN/100 g was detected. V. vulnificus ranged from <30 to 230 MPN/100 g and V. cholerae ranged from <30 to 11,000 MPN/100 g. Salmonella spp. and Shigella spp. were not detected in this inves tigation. In the reduction study using the artificial relaying depuration system, E. coli of oysters decreased by more than 99% after 24 h of purification, and E. coli of short-neck clams decreased by more than 99.9% after 24 h. This study is expected to ensure the hygienic safety of shellfish and provide basic data for the research and development of microbial reduction technologies.
Abstract
In this study, the hygiene indicator bacteria and pathogenic bacteria in shellfish (oysters and short-neck clams) pro duced on the West Coast were analyzed. In addition, this study aimed to secure the microbiological safety of dis tributed shellfish by reducing the number of microorganisms in the shellfish using an artificial relaying depuration system. Fecal coliforms and Escherichia coli of the shellfish examined ranged from <18 to 1,300 MPN/100 g and <18 to 700 MPN/100 g, respectively, with total aerobic bacteria ranging from <30 to 36,000 CFU/g. For Vibrio parahaemolyticus, <30 to 11,000 MPN/100 g was detected. V. vulnificus ranged from <30 to 230 MPN/100 g and V. cholerae ranged from <30 to 11,000 MPN/100 g. Salmonella spp. and Shigella spp. were not detected in this inves tigation. In the reduction study using the artificial relaying depuration system, E. coli of oysters decreased by more than 99% after 24 h of purification, and E. coli of short-neck clams decreased by more than 99.9% after 24 h. This study is expected to ensure the hygienic safety of shellfish and provide basic data for the research and development of microbial reduction technologies.