数字农科院2.0

Differentiating Wild, Lake-Farmed And Pond-Farmed Carp Using Stable Isotope And Multi-Element Analysis Of Fish Scales With Chemometrics

文献类型： 外文期刊

作者： Liu, Z; Yuan, YW; Zhao, Y; Zhang, YZ; Nie, J; Shao, SZ; Rogers, KM

作者机构：

关键词： Fish Scales; Stable Isotopes; Multi-Element Analysis; Chemometrics

期刊名称： FOOD CHEMISTRY

ISSN： 0308-8146

年卷期： 2020 年 328 卷

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： Stable carbon (delta(13) C) and nitrogen (delta N-15) isotope ratios and multi-element signatures of pooled fish scales were used to differentiate wild, lake-farmed and pond-farmed carp from Dongting Lake, China. Fish scales were found to be important archives for the dietary history and trophic level of wild and farmed fish, indicating their food sources. delta(13) C and delta(15) N values of pond-farmed carp scales were comparatively enriched to wild and lake-farmed carp due to their animal protein-derived feeds. Multi-element compositions of fish scales also showed significant differences between wild and farmed fish. A partial least squares discriminant analysis (PLS-DA) model correctly discriminated the three carp groups. Discrimination accuracies of wild, lake-farmed and pond-farmed carp were 100%, 95%, and 100% for the training set, and 100% for the testing set. This strategy provides a promising nonlethal alternative method to combat mislabeling of freshwater carp from different farming methods.

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