Digital PCR-Based Characterization of a g10evo-epsps Gene-Specific Matrix Reference Material for Its Food and Feed Detection

文献类型： 外文期刊

第一作者： Chen, Xiaoyun

作者： Chen, Xiaoyun;Peng, Cheng;Wang, Xiaofu;Xu, Xiaoli;Xu, Junfeng;Yu, Huiru;Wang, Pengfei;Liang, Jingang;Li, Liang

作者机构：

关键词： certified reference material; ZUTS-33 soybean; g10evo-epsps; digital PCR; glyphosate resistance

期刊名称：FOODS （ 影响因子：5.561； 五年影响因子：5.94 ）

ISSN：

年卷期： 2022 年 11 卷 13 期

页码：

收录情况： SCI

摘要： g10evo-epsps is a novel glyphosate herbicide-resistant gene that has been transferred to various crops such as soybean, corn, cotton, and rice. Here, we developed a gene-specific digital Polymerase Chain Reaction (dPCR) detection method for absolute quantitative analysis of g10evo-epsps, and characterized g10evo-epsps certified reference materials (CRM) using ZUTS-33 soybean powder as the candidate material. Stability tests of matrix CRMs demonstrate that these CRMs can be stored stably for 6 months and transported for 10 days at room temperature and withstand summer high temperatures (below 60 degrees C). CRM characterization is based on the copy number ratio of g10evo-epsps to lectin. Eight qualified laboratories independently validated the CRM using dPCR method, with a measurement of 0.98 (copy/copy) and an extended uncertainty of 0.08 (copy/copy). The g10evo-epsps matrix CRM described here may be used for qualitative and quantitative testing, method evaluation, laboratory quality control, and other related fields.

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[1]Digital PCR-Based Characterization of a g10evo-epsps Gene-Specific Matrix Reference Material for Its Food and Feed Detection. Chen, Xiaoyun,Peng, Cheng,Wang, Xiaofu,Xu, Xiaoli,Xu, Junfeng,Yu, Huiru,Wang, Pengfei,Liang, Jingang,Li, Liang. 2022

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