Chen Lan, Ding Hao, Zhu Yali, Guo Yawen, Tang Yayun, Xie Kaizhou, Zhang Genxi, Dai Guojun, Gao Yushi, Zhang Tao
College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture & Agri-Product Safety of MOE, Yangzhou University, Yangzhou 225009, China.
College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture & Agri-Product Safety of MOE, Yangzhou University, Yangzhou 225009, China.
Food Chem. 2023 May 30;409:135294. doi: 10.1016/j.foodchem.2022.135294. Epub 2022 Dec 24.
Salmonella Enteritidis easily contaminate chicken during slaughtering, processing, transportation, and sales, which seriously endangers human health. This study aimed to identify metabolite biomarkers for Salmonella Enteritidis contamination in chicken meat. UPLC-Q-Orbitrap MS untargeted metabolomics analysis identified 441 and 240 confidently metabolites in positive and negative ion mode, respectively. Thirty metabolites were defined as potential biomarkers for Salmonella enteritidis contamination in chicken meat. UPLC-QQQ-MS based targeted metabolomics was used to quantitatively analyze candidate metabolite biomarkers in Salmonella enteritidis contaminated and fresh chicken samples. A total of 10 candidate metabolite biomarkers were confirmed in the validation set, among which acetylcholine, l-Methionine, l-Proline, l-Valine, and l-Norleucine were identified as biomarkers for Salmonella Enteritidis contamination in chicken. The combined receiver operating characteristic curve analysis of the five biomarkers achieved an AUC of 0.956, indicating their high sensitivity and specificity in predicting Salmonella Enteritidis in raw chicken. In conclusion, the present study identified five metabolite biomarkers for Salmonella enteritidis in raw chicken. These results provide a potential theoretical basis for developing Salmonella Enteritidis detection methods in raw chicken.
肠炎沙门氏菌在鸡肉屠宰、加工、运输和销售过程中极易污染鸡肉,严重危害人类健康。本研究旨在鉴定鸡肉中肠炎沙门氏菌污染的代谢物生物标志物。超高效液相色谱-四极杆-轨道阱质谱非靶向代谢组学分析在正离子模式和负离子模式下分别鉴定出441种和240种可靠的代谢物。30种代谢物被定义为鸡肉中肠炎沙门氏菌污染的潜在生物标志物。基于超高效液相色谱-三重四极杆质谱的靶向代谢组学用于定量分析肠炎沙门氏菌污染鸡肉和新鲜鸡肉样品中的候选代谢物生物标志物。在验证集中共确认了10种候选代谢物生物标志物,其中乙酰胆碱、L-蛋氨酸、L-脯氨酸、L-缬氨酸和L-正亮氨酸被鉴定为鸡肉中肠炎沙门氏菌污染的生物标志物。这五种生物标志物的联合受试者工作特征曲线分析的曲线下面积为0.956,表明它们在预测生鸡肉中肠炎沙门氏菌方面具有高灵敏度和特异性。总之,本研究鉴定出了生鸡肉中肠炎沙门氏菌的五种代谢物生物标志物。这些结果为开发生鸡肉中肠炎沙门氏菌检测方法提供了潜在的理论依据。
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