Identification of markers for tea authenticity assessment: Non-targeted metabolomics of highly similar oolong tea cultivars (Camellia sinensis var. sinensis)
文献类型： 外文期刊
作者： Zhao, Jie 1 ; Liu, Wenwen 2 ; Chen, Yan 2 ; Zhang, Xin 2 ; Wang, Xu 2 ; Wang, Fuhua 2 ; Qian, Yongzhong 1 ; Qiu, Jing 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Beijing 100081, Peoples R China
2.Guangdong Acad Agr Sci, Inst Qual Stand Monitoring Technol Agroprod, Guangzhou 510640, Peoples R China
3.Minist Agr & Rural Affairs, Key Lab Testing & Evaluat Agroprod Safety & Qual G, Guangzhou 510640, Peoples R China
关键词： Tea authenticity assessment; Identification; Markers; Non -targeted metabolomics; Chemometric
期刊名称：FOOD CONTROL （ 影响因子：6.652； 五年影响因子：6.498 ）
ISSN： 0956-7135
年卷期： 2022 年 142 卷
页码：
收录情况： SCI
摘要： Tea authenticity assessment remains a challenge because of various cultivars and similar chemical profiles among tea cultivars. Unique oolong tea cultivars (YaShiXiang (YSX)) were used as models in the present study to identify potential markers for tea authenticity assessment via non-targeted metabolomics. With chemometric analysis, a total of ten markers were found to differ significantly among YSX and the high similarity cultivar tea samples, which were up-regulated in YSX. Based on the ten markers, classification model for discrimination of YSX were developed with different combinations of markers. All models were able to classify YSX samples correctly (93.0%-100% for internal cross-validation; 80.5%-99.0% for external validation). The simultaneous determination of metabolites in this study suggested that a combination of non-targeted metabolomics and chemometric methods could provide high resolution markers for tea authenticity assessment, and which can serve as a basis for further quality evaluation and breeding of tea cultivars in the future.
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