Biochemical Composition of Myctophid Species Diaphus watasei and Myctophum obtusirostre Caught from Arabian Sea

K. Rajamoorthy; K. Pradeep; R. Anandan; Libin Baby; T.V. Sankar; P. T. Lakshmanan

doi:10.56093/ft.v50i1.26599

Authors

K. Rajamoorthy Central Institute of Fisheries Technology, P.O. Matsyapuri, Cochin
K. Pradeep Central Institute of Fisheries Technology, P.O. Matsyapuri, Cochin
R. Anandan Central Institute of Fisheries Technology, P.O. Matsyapuri, Cochin
Libin Baby Central Institute of Fisheries Technology, P.O. Matsyapuri, Cochin
T.V. Sankar Central Institute of Fisheries Technology, P.O. Matsyapuri, Cochin
P. T. Lakshmanan Central Institute of Fisheries Technology, P.O. Matsyapuri, Cochin

https://doi.org/10.56093/ft.v50i1.26599

Keywords:

Myctophid, Diaphus watasei, Myctophum obtusirostre, proximate composition, amino acids

Abstract

An attempt was made to evaluate the biochemical composition of myctophid fishes Diaphus watasei and Myctophum obtusirostre collected from Arabian Sea (8Â°30â€™50"N - 9Â°07â€™50"N lat and 75Â°49â€™20"E - 75Â°58â€™60"E long). The moisture content in D. watasei was significantly lower (63.19 Â± 0.47%) compared to M. obtusirostre (71.32%), while fat content was significantly higher in D. watasei (15.13%) compared to M obtusirostre (3.54%). Protein also comprised significant proportions in these myctophids, con- tributing 21.40% in D. watasei and 22.64% in M. obtusirostre, with substantial amount of essential amino acids. The foremost amino acid was glutamic acid in both the species. Ash content was signifi- cantly higher in M. obtusirostre (3.06%) compared to D. watasei (1.33%). The present study indicates that both species contain good quantity of essential amino acids required for human nutrition.