Fatty Acid Composition of Selected Fresh Water Gammarids (Amphipoda, Crustacea): A Potentially Innovative Source of Omega-3 LC PUFA
2007
Kolanowski, Wojciech | Stolyhwo, Andrzej | Grabowski, Michał
The aim of this work was to estimate the content and composition of n-3 long chain polyunsaturated fatty acids in selected gammarid species commonly occurring in fresh waters of Central and Western Europe. Five gammarid species were investigated, two native, one old invader consider as semi-native and two Ponto-Caspian species invading the area in the last decade. Lipid content of evaluated species ranged from 75 to 130 g kg-¹ of dry weight. Significant amounts of n-3 LC PUFA were found in the lipid fraction of analyzed gammarids 11-23% of total fatty acids, especially in the Ponto-Caspian species. The main n-3 fatty acid was EPA--up to 16% of total fatty acids. The ratio of n-6 to n-3 was nutritionally desirable, especially in the case of the Ponto-Caspian species. The results obtained and growing biomass of gammarids observed in fresh waters of Central and Western Europe, as well as the rapid depletion of sea fish communities leads us to the idea that these gammarids might be considered as a innovative source of n-3 LC PUFA for nutritional, pharmaceutical and animal feeding purposes.
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