食品科学 ›› 2009, Vol. 30 ›› Issue (6): 196-198.doi: 10.7506/spkx1002-6630-200906044

• 分析检测 • 上一篇    下一篇

改良FTA-PCR快速检测单核细胞增生李斯特氏菌研究

李 慧,张会彦,马晓燕,柳 毅,何 义,张 伟*   

  1. 河北农业大学食品科技学院
  • 收稿日期:2008-05-20 修回日期:2008-08-28 出版日期:2009-03-15 发布日期:2010-12-29
  • 通讯作者: 张伟 E-mail:zhangwei631126@yahoo.com.cn

Improved Flinders Technology Associates (FTA) Filter Paper-based DNA Extraction with Polymerase Chain eaction (PCR) for Rapid Detection of Listeria monocytogenes

LI Hui,ZHANG Hui-yan,MA Xiao-yan,LIU Yi,HE Yi,ZHANG Wei*   

  1. (College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China)
  • Received:2008-05-20 Revised:2008-08-28 Online:2009-03-15 Published:2010-12-29
  • Contact: ZHANG Wei* E-mail:zhangwei631126@yahoo.com.cn

摘要:

目的:建立快速、特异、灵敏的单核细胞增生性李斯特氏菌的PCR 检测方法。方法:以单核细胞增生李斯特氏菌的hlyA 基因作为靶序列设计一对引物,运用改良的FTA-PCR 法对单核细胞增生李斯特氏菌进行鉴定和检测。结果:扩增产物为136bp 的片断,此方法较原有方法灵敏度增强,可达到1.1 × 102CFU/ml。结论:改良的FTA 卡法特异性强、灵敏度高,有效缩短了检验周期,从传统的7~14d 缩短到1~1.5d。

关键词: 单核细胞增生李斯特氏菌, FTA-PCR, 检测

Abstract:

Objective: To set up a detection approach of Listeria monocytogenes based on PCR. Methods: A pair of primers ere designed with hlyA gene of Listeria monocytogenes as target sequence for its detection by improved FTA-PCR method. esults: A 136-bp DNA fragment was amplified from the primers. The sensitivity of the improved FTA-PCR method was up o 1.1 × 102 CFU/ml. Conclusion: This method is rapid, sensitive and accurate, with high specificity, which can shorten the etection time from 7 to 14 days to 1 to 1.5 days.

Key words: Listeiamonocytogenes, TA-PCR, detection

中图分类号: