Profile of Aqueous Metabolites in Siberian Sturgeon

Takeshi Naganuma^1,

¹Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-hiroshima 739-8528, Japan

Cite this paper:
Takeshi Naganuma. Profile of Aqueous Metabolites in Siberian Sturgeon. Journal of Food and Nutrition Research. 2021; 9(12):648-656. doi: 10.12691/jfnr-9-12-5

Abstract

Free aqueous metabolites in meat, fat and egg of a 4-year-old female Siberian sturgeon were analyzed in a metabolomic perspective. A total of 245 metabolites were detected and 91 were quantified. Major common metabolites among meat, fat and egg were lactic acid, creatine and alanine. There were some tissue-specific metabolites but at only minor levels. Carnosine, a dipeptide consisting of β-alanine and histidine and known for its geroprotetive (anti-aging) function, occurred in abundance in meat and fat but was not detected in egg. The same tendency was seen for another major metabolite, betaine (also known as N,N,N-trimethylglycine). These metabolomic profiles well characterized and discriminated meat, fat and egg, which were primarily characterized with creatine, betaine/choline and glutamic acid, respectively. The metabolite profile help developing aquacultural feed for sturgeons as well as utilizing sturgeons for human nutrition.

Keywords:
sturgeon metabolomics metabolite amino acid carboxylic acid metabolic pathway

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