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Analysis of Prevalence and Survival pattern of Staphylococcus aureus from Dried Seasoned Fishes  

Cho, Joon-Il (Food Microbiology Division, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation)
Lee, Soon-Ho (Food Microbiology Division, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation)
Choi, Jun-Hyuk (Food Microbiology Division, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation)
Choi, Eun-Jung (Food Microbiology Division, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation)
Hwang, In-Gyun (Food Microbiology Division, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation)
Publication Information
Journal of Food Hygiene and Safety / v.26, no.4, 2011 , pp. 366-369 More about this Journal
Abstract
In this study, the contamination levels of total aerobic bacteria, E. coli, total coliform and S. aureus of seasoned dried fishes (SDF) in Korea were investigated. A total of 81 SDF samples were purchased randomly from 28 stores. Contamination range of total aerobic bacteria, total coliform and S. aureus were 150~1,700,000, 10~31,000 and 10~220 CFU/g, respectively. E. coli was detected in only one samples in the qualitative test. We have analyzed quantitatively Staphylococcal enterotoxins (SE-type A, C and D) produced by S. aureus contaminated in SDF using a TECRA kit and standard curve. The curve equation was Y = 0.1499 * X + 0.1183 and maximum amount of SEs in SDF was 0.71 ng/ml. Reduction speed of S. aureus in SDF stored at $37^{\circ}C$ was the highest among the samples stored for 8 days at different temperature of 7, 18 and $37^{\circ}C$. On the basis of the results, SDF in Korea can be contaminated by a variety of pathogenic bacteria. Therefore, precautionary measures are necessary for consumer protection, including the improvement of sanitary conditions in the processing plants in Korea.
Keywords
Seasoned dried fish; Staphylococcus aureus; enterotoxin; Standard curve; Survival pattern;
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Times Cited By KSCI : 6  (Citation Analysis)
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