Insight into the relationship between metabolite dynamic changes and microorganisms of sea urchin (S. intermedius) gonads during storage

Wen-Qiang Cai; Cai-Yan Jiang; Shan Shang; Shu-Chen Wang; Kai-Yue Zhu; Xiu-Ping Dong; Da-Yong Zhou; Peng-Fei Jiang

doi:10.1016/j.fochx.2023.100727

Insight into the relationship between metabolite dynamic changes and microorganisms of sea urchin (S. intermedius) gonads during storage

Food Chem X. 2023 May 29:18:100727. doi: 10.1016/j.fochx.2023.100727. eCollection 2023 Jun 30.

Authors

Wen-Qiang Cai^{1

2}, Cai-Yan Jiang^{1

2}, Shan Shang^{1

2}, Shu-Chen Wang^{1

2}, Kai-Yue Zhu^{1

2}, Xiu-Ping Dong^{1

2}, Da-Yong Zhou^{1

2}, Peng-Fei Jiang^{1

2}

Affiliations

¹ School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China.
² National Engineering Research Center of Seafood, Dalian 116034, China.

Abstract

Sea urchin gonads have high nutritional value and degenerate rapidly during storage. Previous assessment of the freshness of sea urchin gonads was based on experience without valid biochemical indicators. Thus, the current study is to find biochemical indicators representing the freshness of sea urchin gonads. Results showed that the dominant genera of sea urchin gonads were changed from Psychromonas, Ralstonia, and Roseimarinus to Aliivibrio, Psychrilyobacter, and Photobacterium. The differential metabolites of sea urchin gonads were mainly produced through amino acids metabolism. Among them, GC-TOF-MS based differential metabolites had the greatest enrichment in the valine, leucine and isoleucine biosynthesis pathway, while LC-MS based differential metabolites had the greatest enrichment in the alanine, aspartate and glutamate metabolism pathway. The growth of dominant genus (Aliivibrio) had a great influence on the production of differential metabolites. These results will provide valuable information for accurately judging the freshness and shelf life of sea urchin gonads.

Keywords: Correlation network; GC-TOF-MS metabolomics; LC-MS metabolomics; Microbiota composition; Sea urchin gonads.