Biochemical Profile of the Mangrove Oyster, Crassostrea gasar (Adanson, 1757) from the Mangrove Swamps, South-West, Nigeria
doi.org/10.26538/tjnpr/v5i12.16
Keywords:
Aspartic acid, Amino acid, Fatty acid, Crassostrea gasarAbstract
The biochemical compositions (Fatty acids, Amino acids and Vitamin contents) of the Mangrove oyster, Crassostrea gasar (C. gasar) from the mangrove swamps were determined using various standard procedures. The study indicated that the species had all the essential amino acids among which, lysine with value of 11.61 g/100 g content was the highest while the least value of 1.29 g/100 g was found for Tryptophan. Aspartic acid with value of 11.13 g/100 g was present in high concentration among the non-essential amino acids while the least concentration value of 0.86 g/100 g was found in Glutamic acid. Fatty acid composition ranged between 46.18 to 46.99% saturated, 41.02 to 41.8% monounsaturated and 12.03 to 12.21% polyunsaturated acids in the flesh of C. gasar. The most abundant fatty acid in mangrove oyster was Oleic C18.1 (29.4%), the other major fatty acids detected were Palmitic acid {C16.0} and Docosahexanoic acid {C22.4}. The concentration of vitamins in the flesh of C. gasar collected was fairly constant within the two sampling sites. This study, demonstrated that this species was characterized by low fat content (<3.0%), is a good resource of eicosapentaenoic (20:5n-3, EPA) and docosahexaenoic (22:6n-3, DHA). Therefore, Crassostrea gasar, as a shellfish with a good source of quality biochemical properties which could be recommended in specific nutritional needs as seafood because of its low cholesterol levels and high nutrient values for human consumption.
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