Extraction of fatty acid Omega-3 from kilka oil

Kilka fish oil has omega-3 fatty acids and these acids have inhibitory on coronary disease. Unfortunately, any study about improvement use from Kilka oil. In this study, extraction of omega-3 fatty acids from Kilka oil was evaluated in bench scale. Extraction and purification of raw and refinery Kilka oil were done in three temperatures (1 ºC, -5 ºC and -10 ºC) by urea complex method. The results showed that the maximum extraction of fatty acids were in 1oC. Mean of omega-3 extraction in refinery and raw fish oil were29.28% and 26.05% respectively and after extraction and purification were increased to 79.8% and 68.9% and pure maximum of fatty acids were also 80.5% and 69.29%.respectively. The statistical analysis showed that value of omega-3, before and after extraction and purification, have been significant different (p<0.04 for raw and p<0.03 for refinery fish oil). Value of C18:3, C20:3 and C22:6 in refinery oil, after extraction and purification, were increased from 2.37%, 6.94%, 19.55% to 7.31%, 18.83% and 53.47% respectively. Value of saturated fatty acids and undesirable menstruated fatty acids with long chain including C16:0, and C18:1, after purification, were decreased from 22.4% and 28.1% to 3.5% and 5.5%respectively. The conclusion showed that fatty acids purification by area complex has had successful and have potential in pilot scales.