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Metabolomics integrated with machine learning to discriminate the geographic origin of Rougui Wuyi rock tea.


ABSTRACT: The geographic origin of agri-food products contributes greatly to their quality and market value. Here, we developed a robust method combining metabolomics and machine learning (ML) to authenticate the geographic origin of Wuyi rock tea, a premium oolong tea. The volatiles of 333 tea samples (174 from the core region and 159 from the non-core region) were profiled using gas chromatography time-of-flight mass spectrometry and a series of ML algorithms were tested. Wuyi rock tea from the two regions featured distinct aroma profiles. Multilayer Perceptron achieved the best performance with an average accuracy of 92.7% on the training data using 176 volatile features. The model was benchmarked with two independent test sets, showing over 90% accuracy. Gradient Boosting algorithm yielded the best accuracy (89.6%) when using only 30 volatile features. The proposed methodology holds great promise for its broader applications in identifying the geographic origins of other valuable agri-food products.

SUBMITTER: Peng Y 

PROVIDER: S-EPMC10020150 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Metabolomics integrated with machine learning to discriminate the geographic origin of Rougui Wuyi rock tea.

Peng Yifei Y   Zheng Chao C   Guo Shuang S   Gao Fuquan F   Wang Xiaxia X   Du Zhenghua Z   Gao Feng F   Su Feng F   Zhang Wenjing W   Yu Xueling X   Liu Guoying G   Liu Baoshun B   Wu Chengjian C   Sun Yun Y   Yang Zhenbiao Z   Hao Zhilong Z   Yu Xiaomin X  

NPJ science of food 20230316 1


The geographic origin of agri-food products contributes greatly to their quality and market value. Here, we developed a robust method combining metabolomics and machine learning (ML) to authenticate the geographic origin of Wuyi rock tea, a premium oolong tea. The volatiles of 333 tea samples (174 from the core region and 159 from the non-core region) were profiled using gas chromatography time-of-flight mass spectrometry and a series of ML algorithms were tested. Wuyi rock tea from the two regi  ...[more]

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