Abstract: The present study evaluated fatty acid profile of six fish muscles collected from different freshwater sources like rivers, beels and ponds to determine the composition of lauric acid (C12:0), palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1n-9), linoleic acid (C18:2n-9), arachidonic acid (C20:4n-6), eicosapentaenoic acid (C20:5n-3, EPA) and docosahexaenoic acid (C22:6n-3, DHA). Sampled freshwater fishes include Eutropiichthys vacha, Aorichthys seenghala, Wallagu attu, Anabas testudineus, Clarias batrachus and Heteropneustes fossilis were collected from different habitats but all were carnivorous. The results showed that the fatty acid contents in E.vacha (12.477%) and A.seenghala (12.183%) collected from the rivers were higher, followed by W.attu (11.997%) and A.testudineus (11.722%) collected from beels and H.fossilis (11.291%) and C.batrachus (11.186%) collected from ponds. The most abundant fatty acids were oleic acid (28.15±7.91 to 32.10±4.13%) followed by palmitic acid (27.40±4.55 to 29.22±5.02%), docosahexaenoic acid (9.23±2.70 to 11.30±0.47%), eicosapentaenoic acid (7.90±0.94 to 9.70±0.76%), linoleic acid (7.68±2.87 to 9.00±0.96%), stearic acid (5.60±2.27 to 8.70±3.31%), arachidonic acid (0.90±0.38 to 2.00±1.18%) and lauric acid (0.03±0.02 to 0.30±0.11%) in all the studied riverine, beel and pond fishes. The predominant fatty acids in the evaluated fishes were oleic acid (unsaturated fatty acid), palmitic acid (saturated fatty acid), stearic acid (saturated fatty acid) and lauric acid (saturated fatty acid). The major omega-3 fatty acids (EPA and DHA) were higher than omega-6 fatty acids (linoleic acid and arachidonic acid) in the studied fish muscles. These data revealed that fishes were good source of fatty acids whether fishes are collected from rivers or beels or ponds. It may also be said that fatty acid compositions significantly varied from fish to fish, collected from different habitats. So, the goal of these studies was to find out the differences among fatty acid compositions of fishes collected from different aquatic environments (rivers, beels and ponds).
Keywords: Fatty acid compositions, Six freshwater fishes, Variations, Collected from Rivers, Beels, Ponds.
Title: FATTY ACID COMPOSITION IN SIX FRESHWATER FISHES COLLECTED FROM RIVERS, BEELS AND PONDS OF MORIGAON DISTRICT, ASSAM, INDIA
Author: Rijuana Ahmed, Abdul Q. Osmani, Dhananjay Kusre, Bodheswar Kalita
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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