The main aim of this research was to identify fatty acids composition of Caspian Sea of white fish Rutilusfrisii kutum tissue and their changes during 12 months storage (-18 ℃ ). The results showed, UFA (Unsaturat...The main aim of this research was to identify fatty acids composition of Caspian Sea of white fish Rutilusfrisii kutum tissue and their changes during 12 months storage (-18 ℃ ). The results showed, UFA (Unsaturated Fatty Acid) and SFA (Saturated Fatty Acid) were 74/09 and 21/63%, respectively in fresh tissue. So that, DHA (C22:6) oleic acid (C 18:1c) had high amounts (15/07, 20/57) UFA and palmitic acid (C16:0) was the most (13/09%) SFA. The effects of freezing on fish tissue showed that UFA and SFA contents have reached to 58/79 and 22/17%, respectively at the end of cold storage. Also ω-3 and ω-6 series of fatty acids was 24/22 and 15/56% in fresh tissue, but their contents decreased to 8/68 and 5/11% at the end of period. Among, the fatty acids C22:6, C 18:1 c and C 16:0 had the most changes. The changes of fatty acids were significantly at 95% level expected for C18:0.展开更多
文摘The main aim of this research was to identify fatty acids composition of Caspian Sea of white fish Rutilusfrisii kutum tissue and their changes during 12 months storage (-18 ℃ ). The results showed, UFA (Unsaturated Fatty Acid) and SFA (Saturated Fatty Acid) were 74/09 and 21/63%, respectively in fresh tissue. So that, DHA (C22:6) oleic acid (C 18:1c) had high amounts (15/07, 20/57) UFA and palmitic acid (C16:0) was the most (13/09%) SFA. The effects of freezing on fish tissue showed that UFA and SFA contents have reached to 58/79 and 22/17%, respectively at the end of cold storage. Also ω-3 and ω-6 series of fatty acids was 24/22 and 15/56% in fresh tissue, but their contents decreased to 8/68 and 5/11% at the end of period. Among, the fatty acids C22:6, C 18:1 c and C 16:0 had the most changes. The changes of fatty acids were significantly at 95% level expected for C18:0.