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肉制品中植源性转基因成分多重荧光定量PCR检测方法的建立

2018-04-03邵彪周小兰王琳琳陈刚

肉类研究 2018年1期

邵彪 周小兰 王琳琳 陈刚

摘 要:为改善产品品质,肉制品加工过程中常常添加植物源性成分,当前转基因农作物的商品化及其在市场上的广泛流通导致肉制品中被带入植源性转基因成分的风险增加。以转基因植物中常涉及的调控元件CaMV 35S启动子、NOS终止子以及标记基因NPTⅡ为检测目标,设计相应的引物和Taq man探针,利用载体pRⅠ 101-AN DNA为模板,通过优化反应体系和反应参数,建立肉制品中植源性转基因成分的单重和多重荧光定量聚合酶链式反应(polymerase chain reaction,PCR)检测方法。通过比较分析,考察多重荧光定量PCR检测方法的灵敏性、重复性和准确性,结果表明,多重荧光定量PCR检测方法灵敏度高、重复性好且与单重体系的检测结果具有很好的一致性。

关键词:多重荧光定量PCR;肉制品;植源性转基因成分

Development of a Multiplex Fluorescence Quantitative Polymerase Chain Reaction Assay for Detecting

Added Genetically Modified Ingredients Derived from Plants in Meat Products

SHAO Biao1, ZHOU Xiaolan2, WANG Linlin1, CHEN Gang1,*

(1.Nantong Products Quality Supervision and Inspection Institute, Nantong 226011, China;

2.Analysis and Testing Center, Nantong University, Nantong 226019, China)

Abstract: Plant-derived components are often added to meat products during processing to improve their quality. The commercialization and wide circulation in the market of genetically modified crops bring increasing risk of introducing genetically modified components into meat products. In this study, a multiplex fluorescence quantitative polymerase chain reaction (PCR) assay was described for detecting added genetically modified ingredient derived from plants in meat products. Specific primers and Taq man probes targeting the CaMV 35S promoter, NOS terminator and neomycin phosphotransferase Ⅱ (nptⅡ) marker gene were designed and the pRⅠ 101-AN DNA vector was used as template. The sensitivity, repeatability and accuracy of the multiplex PCR assay were confirmed by comparison with traditional PCR. Consistent results were obtained using the two methods.

Keywords: multiplex fluorescence quantitative polymerase chain reaction; meat products; genetically modified ingredient derived from plants

DOI:10.7506/rlyj1001-8123-201801007

中圖分类号:TS251.7 文献标志码:A 文章编号:1001-8123(2018)01-0041-05

引文格式:

邵彪, 周小兰, 王琳琳, 等. 肉制品中植源性转基因成分多重荧光定量PCR检测方法的建立[J]. 肉类研究, 2018, 32(1): 41-45. DOI:10.7506/rlyj1001-8123-201801007. http://www.rlyj.pub

SHAO Biao, ZHOU Xiaolan, WANG Linlin, et al. Development of a multiplex fluorescence quantitative polymerase chain reaction assay for detecting added genetically modified ingredients derived from plants in meat products[J]. Meat Research, 2018, 32(1): 41-45. DOI:10.7506/rlyj1001-8123-201801007. http://www.rlyj.pub

肉制品因其独特的风味深受广大消费者的喜爱,是人们日常饮食的重要组成部分。随着经济的大幅增长和人民生活水平的持续提高,我国肉制品产量和消费量均居世界前列。在现代肉制品加工过程中,为改善肉制品的品质、优化产品质量、确保营养均衡,植物源性成分,如植物蛋白[1-2]、淀粉[3-4]、膳食纤维[5-6]、食用胶[7-8]、植物油以及各种调味品等被运用到肉制品加工中。

近20多年,转基因作物随着基因工程技术的成熟而迅速发展,截至2016年全球转基因作物种植面积累计达21 亿hm2[9],我国转基因植物种植面积也在逐年递增[10-11]。……

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