Development of a Duck Genomic Reference Material by Digital PCR Platforms for the Detection of Meat Adulteration

文献类型： 外文期刊

第一作者： Chen, Xiaoyun

作者： Chen, Xiaoyun;Ji, Yi;Wang, Xiaofu;Peng, Cheng;Xu, Xiaoli;Xu, Junfeng;Li, Kai;Pei, Xinwu;Li, Liang

作者机构：

关键词： certified reference material; digital PCR; duck interleukin 2; mitochondrial gene; meat adulteration

期刊名称：FOODS （ 影响因子：4.35； 五年影响因子：4.957 ）

ISSN：

年卷期： 2021 年 10 卷 8 期

页码：

收录情况： SCI

摘要： Low-cost meat, such as duck, is frequently used to adulterate more expensive foods like lamb or beef in many countries. However, the lack of DNA-based reference materials has limited the quality control and detection of adulterants. Here, we report the development and validation of duck genomic DNA certified reference materials (CRMs) through the detection of the duck interleukin 2 (IL2) gene by digital PCR (dPCR) for the identification of duck meat in food products. The certified value of IL2 in CRMs was 5.78 +/- 0.51 x 10(3) copies/mu L with extended uncertainty (coverage factor k = 2) based on IL2 quantification by eight independent collaborating laboratories. Quantification of the mitochondrial gene cytb revealed a concentration of 2.0 x 10(6) copies/mu L, as an information value. The CRMs were also used to determine the limit of detection (LOD) for six commercial testing kits, which confirmed that these kits meet or exceed their claimed sensitivity and are reliable for duck detection.

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