Identification of the geographical origin of wild rice field eel (Monopterus albus) in China by stable isotopes
文献类型： 外文期刊
作者： Lv, Weiwei 1 ; Li, Muyan 1 ; Lu, Yangyang 2 ; Zhao, Yifan 1 ; Huang, Weiwei 1 ; Yang, Hang 1 ; Yuan, Quan 1 ; Zhang, Yuning 1 ; Li, Mingyou 3 ; Hu, Wei 4 ; Yao, Chunxia 2 ; Wang, Danhe 2 ; Song, Wei 2 ; Song, Weiguo 2 ; Zhou, Wenzong 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai 201403, Peoples R China
2.Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201403, Peoples R China
3.Shanghai Ocean Univ, Key Lab Explorat & Utilizat Aquat Genet Resources, Minist Educ, Shanghai 201306, Peoples R China
4.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Hubei Hongshan Lab, Wuhan 430072, Peoples R China
关键词： Monopterus albus; Stable isotope; Geographical origin; Traceability; Discriminant analysis
期刊名称：FOOD CONTROL （ 影响因子：6.3； 五年影响因子：6.1 ）
ISSN： 0956-7135
年卷期： 2026 年 179 卷
页码：
收录情况： SCI
摘要： The mislabeling of wild rice field eel (Monopterus albus) origin disrupts market order and hinders ecological research and conservation. To address this, 100 wild eel samples were collected from five regions across three major river basins in China. For the first time, stable isotope ratio analysis (delta C-13, delta N-15, delta H-2, and delta O-18) was used to assess geographic variation. Results showed significant regional differences: samples from Shanghai had lower delta C-13 and higher delta N-15 ratios, while those from Nanning exhibited significantly higher delta H-2 and delta O-18 ratios (p < 0.05). These differences reflect environmental and trophic distinctions among habitats. Partial least squares discriminant analysis (PLS-DA), validated through leave-one-out cross-validation, achieved an overall classification accuracy of 92 %, with identification rates exceeding 90 % for each region. This study demonstrates that stable isotope analysis is a reliable tool for tracing the geographic origin of wild eels in China, improving product traceability, supporting conservation, and enhancing consumer trust.
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