Comparative metabolomics study on the quality of Antarctic krill ( Euphausia superba) stored at different temperatures

• Published in: International Journal of Food Science & Technology
• Main Authors: Ma, Xinyu, Su, Dong, Zhu, Jiancheng, Miao, Junkui, Liu, Xiaofang, Leng, Kailiang, Wang, Xixi, Xie, Wancui
• Other Authors: National Key Research and Development Program of China, China Postdoctoral Science Foundation, Natural Science Foundation of Shandong Province, Qingdao Postdoctoral Science Foundation, National Natural Science Foundation of China, Central Public-interest Scientific Institution Basal Research Fund, Chinese Academy of Fishery Sciences
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2024
• Subjects: Antarctic; Antarc*; Antarctic Krill; Euphausia superba
• Online Access: http://dx.doi.org/10.1111/ijfs.17158

Summary In this study, the effect of short‐term storage at different temperatures (0, 4 and −8 °C) on the quality of Antarctic krill was investigated using the main quality indicators as a reference, combined with electronic nose and untargeted metabolomics. Antarctic krill stored at lower temperatures (−8 °C) were of better quality and had a flavour similar to that of the original Antarctic krill. Metabolomics analyses showed that differential metabolites (DMS) were more abundant in Antarctic krill at higher temperatures (4 °C), with sixty‐five metabolites having reduced expression and forty‐five metabolites having increased expression; Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses showed that amino acid metabolism and nucleotide metabolism pathways were the Five DMS, including α‐ketoglutarate, glutamate, succinate, sucrose and glutarate, can be used as potential biomarkers to monitor quality changes during short‐term storage of Antarctic krill. In addition, the association between quality indicators and differential metabolites remains to be explored.