알카리 및 酸觸媒法에 의한 conjugated triene 脂肪酸 殘基을 含有한 트리글리세리드의 메칠 에스틸化의 比較

Methyl Ester Preparation from Triacylglycerols Containing Conjugated Trienoic Fatty Acids, by Alkaline and Acid Catalyst

Conventional alkaline catalytic procedures including sodium methoxide-methanol N, N, N , N -tetramethyl guanidine-methanol, and acid-catalytic methods of BF₃-methanol and HCl-methanol, have been applied for preparing methyl esters from the triacylglycerols of Trichosanthes kirilowii seeds containing conjugated trienoic acids. The alkaline catalytic methods produce the methyl esters quantitatively without isomerization of the conjugated trienoic acids, but the acid-catalytic ones destroy almost the molecules of conjugated trienoic acids during transesterification of the triacylglycerols although the molar ratios of monoenoic and dienoic acids (non-conjugated) to saturated acids are in good agreement with those obtained from the alkaline methods.