Determination of saturated and unsaturated fatty acids in six species of natural and cultural shrimp(Persian Gulf)

This study was carried out to survey of omega-3 fatty acid distribution in six natural and cultural shrimp species, Fenneropenaeus merguiensis, Penaus semisulcatus, Fenneropenaeus indicus, Metapenaeus affinis, Parapenaeopsis stylifera and Litopenaeus vannamei. Oil extracts were done according Bligh and Dyer, 1959 and by gas chromatography, HP-6820. Results showed the important fatty acids in samples were EPA (C20:5n3)، DHA (C22:6n3) and ETE (C20:3n3). C16:0 was the important of SFA and C18:1n9 was the important of MUFA. Also results showed amount of omega-3 was more than omega-6 in the samples. The more amounts of PUFA/ SFA was 1. 04 mg/g in Metapenaeus affinis, while that was less in Penaus semisulcatu (0. 86 mg/g), altogether the more of fatty acids was in Litopenaeus vannamei.