中性脂肪 丫+ glycerol C20:5(EPA) A triglyceride 3 fatty acids formed from C22: 6(DHA) of differing 1 glycerol lengths 3 fatty acids C20:4花生四烯酸 脂肪酸 C18:2亚油酸 33,。,”,。 Saturated Fatty Acid Monounsaturated Fatty Acid Polyunsaturated Fatty Acid CHO CH O 2n-22 C 2 n2n-42中性脂肪: 脂肪酸: CnH2nO2 CnH2n-2O2 CnH2n-4O2 C20:5 (EPA) C22:6 (DHA) C20:4 花生四烯酸 C18:2 亚油酸