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논문 기본 정보

자료유형
학술저널
저자정보
Jeong, Yoo Seok (Biohealth Convergence Center) Jung, Hee Kyoung (Biohealth Convergence Center) Hong, Joo-Heon (Department of Food Science and Technology, Catholic University of Daegu)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제56권 제6호
발행연도
2013.1
수록면
715 - 721 (7page)

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This study presented a multiplex, single-tube, realtime polymerase chain reaction (RTi-PCR) approach for detecting Staphylococcus aureus, Vibrio parahaemolyticus, and Salmonella typhimurium, three of the more frequent foodborne pathogenic bacteria typically investigated in a variety of foods. New primer sequences were designed for detection of specific gene fragments in the 23s ribosomal RNA, transmembrane transcription regulator, and replication origin sequences of S. aureus, V. parahaemolyticus, and S. typhimurium. Simultaneous amplifications were performed under the optimized reaction conditions. Melting curve analysis using SYBR Green I RTi-PCR analysis produced characteristic Tm values for each target amplicon, demonstrating specific and efficient amplification of the three fragments. Addition of an internal amplification control did not affect detection sensitivity for the target pathogen. The analysis of frequent foodborne pathogenic bacteria in artificially inoculated food demonstrated analytical sensitivity for direct detection of each pathogen using the Chelex method rather than a commercial DNA extraction kit. The assay was sensitive to $10^3$ colony-forming units (CFU)/reaction. With enrichment (2 or 4 h), each species could be detected at $10^1$ CFU/g. These results provided that RTi-PCR is a rapid and costeffective procedure to detect foodborne pathogens. This assay could become a valuable tool for routine microbiological analysis in the food industry.

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