| The lecithin in Pacific saury (Cololabis Saira) viscera was extracted by supercritical carbon dioxide (SC-CO2) and organic solvent method. Fatty acid compositions and contents of lecithin extracted by the two methods and its phosphatidylcholine (PC) and phosphatidylethanolamine (PE) in lecithin extracted by SC-CO2 were determined. Meanwhile, the acid value and peroxide value of Pacific saury viscera lecithin extracted by SC-CO2 were detected. The results showed that the extraction rate of Pacific saury viscera lecithin of SC-CO22 ((23.90±1.10)%, dry basis) was higher than that of organic solvent method ((20.81±1.25)%, dry basis), but they had no significant difference（P＞0.05）. The total fatty acid content of lecithin obtained by SC-CO22 was higher than that of lecithin obtained by organic solvent method. EPA contents in lecithin obtained by SC-CO2 and organic solvent method were 8.80% and 8.95%, respectively. DHA contents in lecithin obtained by SC-CO2 and organic solvent method were 43.20% and 43.82%, respectively. The fatty acid compositions of PC and PE had no significant difference（P＞0.05）. The acid value and peroxide value of Pacific saury viscera lecithin were (21.52±0.57)mgKOH/g and (2.06±0.12)mmol/kg, respectively, which met the standard of JECFA Lecithin (Phos phalipides, Phospholipids; INS No.322 (ⅰ)). |
