a CH2-0-C-(CH2)16CH3 0 B CH-0-C-(CH2)14CH3 a"CH2-O-C-(CHz)-CH=CH(CHa)7CHs a-硬脂酸B一软脂酸一Q一油酸甘油酯 (CH2)7CH=CH(CH3)7CH3 CH2-O-C = O (CH2)14 - CH O-C CH3 =O - - CH2-O-C=O (CH2)16 - CH3 ααβ' α-硬脂酸－ －β软脂酸－α－油'酸甘油酯