Development and validation of a universal primer pair for the simultaneous detection of eight animal species

卷:221

Xue, Chaobo ; Wang, Pingya ; Zhao, Jin ; Xu, Aichun ; Guan, Feng

China Jiliang Univ

关键词: Food authentication;    Species identification;    Meat authentication;    DNA detection;    Multiplex species detection;   

DOI  :  10.1016/j.foodchem.2016.11.102

学科分类：食品科学和技术

【 摘 要 】

In the present study, we developed a novel simplex PCR assay for the simultaneous detection of eight animal species, including goat, sheep, deer, buffalo, cattle, yak, pig and camel. A unique pair of universal primers was designed to target mitochondrial DNA variable regions in the eight animal species, generating, 787, 763, 563, 512, 507, 491, 455 and 385 bp long fragments for goat, sheep, deer, buffalo, cattle, yak, pig and camel, respectively. The assay showed no cross-reactivity with other common domestic animals, and was validated by sequencing and enzyme digestion. Detection limit for DNA samples from the eight animal species varied between 6 and 20 pg in a 20 mu l PCR mixture. Interestingly, the newly developed method successfully identified 170 commercial meat products, and is simple, fast, sensitive, specific, and cost-effective. Therefore, it could be used for the detection of goat, sheep, deer, buffalo, cattle, yak, pig, and camel species in foodstuffs. (C) 2016 Elsevier Ltd. All rights reserved.