食品科学 ›› 2007, Vol. 28 ›› Issue (8): 433-437.

• 分析检测 • 上一篇    下一篇

牛奶样品中志贺氏菌的快速PCR检测技术研究

 胡建华, 李洁莉, 马兆飞, 陆玲   

  1. 江苏省产品质量监督检验研究院; 南京师范大学生命科学学院微生物研究所; 南京师范大学生命科学学院微生物研究所 江苏南京210029; 江苏南京210029; 江苏南京210046;
  • 出版日期:2007-08-15 发布日期:2011-10-24

Detection of Shigella in Milk by Polymerase Chain Reaction (PCR) and Real-time PCR

 HU  Jian-Hua, LI  Jie-Li, MA  Zhao-Fei, LU  Ling   

  1. 1.Jiangsu Provincial Supervising and Testing Research Institute for Products Quality, Nanjing 210029, China;2.College of Life Science,Nanjing Normal University, Nanjing 210046, China
  • Online:2007-08-15 Published:2011-10-24

摘要: 建立牛奶中快速检测志贺氏菌的有效方法。根据GenBank公布的志贺氏菌ipaH基因的保守序列设计特异性引物,筛选合适的DNA模板制备方法,采用快速常规PCR和定量实时PCR结合,对培养液中及牛奶阳性样品中的志贺氏菌进行检测,检测敏感度可达到2CFU/ml,检出时间小于20h。新建的PCR方法具有特异性好,灵敏度高等特点,适用于快速、准确检测牛奶中志贺氏菌的需要。

关键词: PCR, 志贺氏菌, ipaH, 牛奶, Real-timePCR

Abstract: To establish a rapid detection technique for Shigella in the milk.One set of specific primers were designed,according to the conserved area of ipaH gene published on GenBank,to detect Shigella by using a suitable template extraction method for the polymerase chain reaction (PCR) and real-time PCR.The sensitivity achieved was as high as to the 2CFU/ml and the detection time was less than 20 h. The new established method will be used to detect the Shigella in the milk rapidly and accurately.

Key words: polymerase chain reaction(PCR), Shigella, ipaH, milk, Real-time PCR