食品科学

• 分析检测 • 上一篇    下一篇

实时荧光聚合酶链式反应检测食品中香蕉成分

李富威,张舒亚,叶 军,于 翠,包建强,印丽萍   

  1. 1.上海海洋大学食品学院,上海水产品加工及贮藏工程技术研究中心,上海 201306;
    2.上海出入境检验检疫局,上海 200135
  • 出版日期:2013-06-25 发布日期:2013-06-17

Real-Time PCR Assay for Detection of Banana Ingredients in Foods

LI Fu-wei,ZHANG Shu-ya,YE Jun,YU Cui,BAO Jian-qiang,YIN Li-ping   

  1. 1. Shanghai Engineering Research Center of Aquatic-product Processing and Preservation , College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China;
    2. Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 200135, China
  • Online:2013-06-25 Published:2013-06-17

摘要:

根据香蕉叶绿体rbcL基因序列,选择高度保守区域设计特异性引物和探针,建立食品中香蕉成分检测的实时荧光聚合酶链式反应检测方法。结果显示,该组引物探针对香蕉有很强的特异性,除香蕉外,其余55种对照样品均未检测到荧光信号;该检测方法对食品中香蕉成分的检测灵敏度为0.0001ng/μL香蕉 DNA和0.001%(m/m)香蕉粉。该方法能对食品中香蕉成分进行准确、快速的检测,具有特异性好,灵敏度高的优点。

关键词: 香蕉, rbcL基因, 实时荧光聚合酶链式反应, 检测

Abstract:

Specific primers and probe were designed according to the highly conserved sequence of ribulose-1,5-
bisphosphate carboxylase (rbcL) gene in banana. A real-time fluorescence polymerase chain reaction (real-time PCR) assay
for banana ingredients in foods was developed. The probe and primers were highly specific to banana, and resulted in no
positive reaction signal when applied to 55 other kinds of food materials. The detection limit of the method was 0.0001 ng/μL
for banana DNA and 0.001% (m/m) for banana powder. All these results confirm that the real-time PCR assay is a rapid,
sensitive and specific method for detecting banana ingredients in foods.

Key words: banana, rbcL gene, real-time polymerase chain reaction, detection