食品科学 ›› 2011, Vol. 32 ›› Issue (6 ): 213-216.doi: 10.7506/spkx1002-6630-201106049

• 分析检测 • 上一篇    下一篇

肉中四种致病菌的PCR快速检测方法的建立

刘红玉1,李 岩1,崔洪斌2   

  1. 1.东北农业大学食品学院 2.哈尔滨医科大学公共卫生学院
  • 收稿日期:2010-04-14 修回日期:2011-01-25 出版日期:2011-03-25 发布日期:2011-03-03
  • 通讯作者: 刘红玉 E-mail:liuhongyu70@yeah.net
  • 基金资助:
    黑龙江省科技厅资助项目(GA07B401)

Establishment of A Rapid Detection Method for Bacterial Pathogens in Meat by Polymerase Chain Reaction

LIU Hong-yu1,LI Yan1,CUI Hong-bin2   

  1. 1. College of Food, Northeast Agricultural University, Harbin 150030, China;
    2. College of Public Health, Harbin Medical University, Harbin 150086, China
  • Received:2010-04-14 Revised:2011-01-25 Online:2011-03-25 Published:2011-03-03
  • Contact: LIU Hong-yu1 E-mail:liuhongyu70@yeah.net

摘要: 目的:建立一种能同时检测肉中金黄色葡萄球菌、志贺氏菌、沙门氏菌和单核增生李斯特菌的多重PCR检测方法。方法:根据金黄色葡萄球菌的耐热核酸酶基因(nuc)、沙门氏菌的侵袭蛋白基因(invA)、志贺氏菌的侵袭性质粒抗原基因(ipaH)和单核细胞增生性李斯特菌的内化素基因(inlA)设计引物,通过优化好的反应体系进行多重聚合酶链反应(PCR)扩增目的基因。结果:特异性实验结果表明4种菌均能在相应位置扩增出特异性条带。对污染4种菌的猪肉进行检测,确定出金黄色葡萄球菌和沙门氏菌的检出限是102CFU/mL,志贺氏菌和单核增生李斯特菌的检出限是101CFU/mL。结论:本实验建立的多重PCR方法比传统细菌检测方法更特异、快速、灵敏,适用于肉中金黄色葡萄球菌、志贺氏菌、沙门菌和单核增生李斯特菌的快速检测。

关键词: 多重聚合酶链反应(PCR), 致病菌, 肉, 检测

Abstract: Objective: To establish a multiplex PCR for simultaneously detecting Staphylococcus aureus, Shigella spp., Salmonella spp. and Listeria monocytogenes in meat. Methods: The primers were designed according to Staphylococcus aureus nuc gene, Shigella spp. ipaH gene, Salmonella spp. invA gene and Listeria monocytogenes inlA gene. The target genes were amplified by multiplex PCR under optimized reaction conditions. Results: Four bacterial pathogens could be amplified, which revealed the special bands at the corresponding locations. When the meat samples were contaminated with four pathogens, the detection limits of Staphylococcus aureus and Salmonella spp. were 102 CFU/mL, and the detection limits of Shigella spp. and Listeria monocytogenes were 101 CFU/mL. Conclusion: The established multiplex PCR method is more specific, rapid, and sensitive than traditional detection methods, which is suitable for the rapid detection of Staphylococcus aureus, Shigella spp., Salmonella spp. and Listeria monocytogenes in meat.

Key words: multiplex polymerase chain reaction (PCR), pathogen, meat, detection

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