食品科学 ›› 2013, Vol. 34 ›› Issue (4): 199-203.

• 分析检测 • 上一篇    下一篇

大豆转基因检测中DNA提取方法的比较研究

刘欣1,祝长青2,王毅谦3,沈贇4,蒋原2,黄明5,周光宏6   

  1. 1. 南京农业大学食品科技学院
    2. 江苏出入境检验检疫局
    3. 张家港出入境检验检疫局
    4. 江苏省疾病预防控制中心
    5. 南京农业大学食品科技学院/国家肉品质量安全控制工程技术研究中心
    6. 南京农业大学 国家肉品质量安全控制工程技术研究中心
  • 收稿日期:2011-10-31 修回日期:2013-01-10 出版日期:2013-02-25 发布日期:2013-01-29
  • 通讯作者: 黄明 E-mail:mhuang@njau.edu.cn
  • 基金资助:

    转基因生物新品种培育重大专项;江苏省疾病预防控制中心青年基金资助

Comparison of Methods for DNA Extraction from Soybean for Detection of Genetically Modified Organism

  • Received:2011-10-31 Revised:2013-01-10 Online:2013-02-25 Published:2013-01-29

摘要:

为筛选出用于大豆DNA提取的适宜方法,分别使用Bayer方法、DuPont方法、Monsanto方法、Qiagen和Tiangen试剂盒法提取大豆子粒DNA,并通过紫外分光光度法、琼脂糖凝胶电泳与实时荧光PCR检测DNA质量。结果显示:Bayer方法提取的DNA含有较多杂质,抑制实时荧光PCR;Monsanto方法提取的DNA纯度差且得率低,不符合检测要求;DuPont方法、Qiagen试剂盒法与Tiangen试剂盒法能提取到纯度好、得率高、完整性好的DNA,符合实时荧光PCR方法的要求,但是Qiagen试剂盒法成本过高。因此,DuPont方法与Tiangen试剂盒法适用于转基因检测的大豆DNA提取。

Abstract:

The objective of this study was to screen a suitable method for DNA extraction from soybean by comparison of five generally applied DNA extraction methods. After extraction, the quality of soybean DNA was examined with ultraviolet spectrophotometry, agarose gel electrophoresis and real-time fluorescent PCR, respectively. The results showed that the DNA extracted by Bayer method contained many PCR inhibitors; the purity and yield of DNA extracted by Monsanto method did not meet the demand of the quality standard of DNA in molecular experiment; DuPont method, Qiagen kit and Tiangen kit could extract high-quality DNA which was suitable for real-time fluorescent PCR, but Qiagen kit cost too much. These evidences indicated that DuPont method and Tiangen kit were suitable methods to extract DNA from soybean for detection of genetically modified ingredients.

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