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Intra- and Inter-Specific Variation in Edible Jellyfish Biomarkers and Implications for Origin Traceability and Authentication

文献类型： 外文期刊

作者： Wang, Yaxin 1 ; Gong, Yi 1 ; Zhang, Jian 1 ; Tang, Yi 5 ; Shi, Xiaofei 1 ; Shi, Jiangao 6 ;

作者机构： 1.Shanghai Ocean Univ, Coll Marine Sci, Shanghai, Peoples R China

2.Minist Educ, Key Lab Sustainable Exploitat Ocean Fisheries Res, Shanghai, Peoples R China

3.Shanghai Ocean Univ, Natl Engn Res Ctr Ocean Fisheries, Shanghai, Peoples R China

4.Minist Agr & Rural Affairs, Key Lab Ocean Fisheries Explorat, Shanghai, Peoples R China

5.Shanghai Ocean Univ, Coll Marine Culture & Law, Shanghai, Peoples R China

6.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai, Peoples R China

关键词： Rhopilema esculentum; Nemopilema nomurai; jellyfish; fatty acids; stable isotopes; origin traceability

期刊名称：FRONTIERS IN MARINE SCIENCE （ 影响因子：4.912； 五年影响因子：5.125 ）

ISSN：

年卷期： 2021 年 8 卷

页码：

收录情况： SCI

摘要： With the continuous development of jellyfish fisheries and food products around the world, an effective traceability system has become increasingly prominent. This study provides insight into the origin traceability and authentication of two commercially important jellyfish species, flame jellyfish Rhopilema esculentum and Nomura's jellyfish Nemopilema nomurai, while investigating the intra- and inter-specific variation in fatty acid (FA) profiles and carbon and nitrogen stable isotope ratios (delta C-13 and delta N-15). Results showed significant differences in FA profiles and isotopic values in fresh bell tissues between wild and farmed R. esculentum and among geographic origins, possibly due to different food sources, nutritional status, and energy costs that each group experiences at a given location. The linear discriminant analysis indicated that delta C-13, delta N-15, C16:0, C17:0, C18:0, C16:1n7, and C20:5n3 were suitable discriminatory variables with a high rate of correct classification for distinguishing origins of R. esculentum. In addition, inter-specific FA profiles/biomarkers, combined with isotopic values, suggests the variety of dietary sources and trophic positions of sympatric similar-sized R. esculentum and N. nomurai and the potential use of biomarkers, especially stable isotope analysis, for distinguishing sympatric jellyfish species. These results highlighted the complementarity of FA and stable isotope analyses and provide an alternative approach for improving the origin traceability and authenticity evaluation of untreated edible jellyfish. Furthermore, this study adds new information regarding the biochemical compositions of jellyfish species.

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