元宝枫油中神经酸乙酯的分离提纯
Separation and purification of nervonic acid ethyl ester from Acer truncatum Bunge seed oil
张元 1侯相林1
作者信息
- 1. 中国科学院,山西煤炭化学研究所,太原,030001
- 折叠
摘要
将元宝枫油制成混合脂肪酸乙酯,分别利用多级分子蒸馏提纯和分子蒸馏与尿素包合法相结合提纯神经酸乙酯得到高含量的神经酸乙酯产品.六级分子蒸馏直接提纯神经酸乙酯,得到神经酸乙酯含量为78.35%的产品.二级分子蒸馏与尿素包合法相结合时,分子蒸馏脱除甾醇、维生素E、C16、C18、C20及部分C22,得到神经酸乙酯与芥酸乙酯比例为1:1的初级产品,再在m(脂肪酸乙酯)/m(尿素)/V(甲醇)为1:5:35、包合温度35 ℃、包合时间8 h条件下,经过二次尿素包合处理,可得到神经酸乙酯含量为66.21%的产品.
Abstract
The fatty acid ethyl esters were prepared from Acer truncatum Bunge seed oil,and then the separation process of nervonic acid ethyl ester by molecular distillation directly or combination of molecular distillation and urea-inclusion method was studied.The content of nervonic acid ethyl ester reached 78.35% by six-step molecular distillation.When the molecular distillation and urea-inclusion was combined to separate nervonic acid,two-step molecular distillation was used to separate the sterols,V_E,C16 fatty acid ethyl esters,C18 fatty acid ethyl esters,C20 fatty acid ethyl esters and a part of C22 fatty acid ethyl esters,and the crude product with the ratio of nervonic acid ethyl ester to erucic acid ethyl ester 1:1 was obtained,then the urea-inclusion method was used to purify nervonic acid ethyl ester,and the operation conditions were:ratio of fatty acid ethyl esters mass to urea mass to methanol volume 1: 5:35,temperature 35 ℃ and time 8 h.The content of nervonic acid ethyl ester reached 66.21% by the combination of two-step molecular distillation and twice urea-inclusion.
关键词
元宝枫油/神经酸/分子蒸馏/尿素包合Key words
Acer truncatum Bunge seed oil/nervonic acid/molecular distillation/urea-inclusion引用本文复制引用
基金项目
山西省自然科学基金(2007031020)
出版年
2010
NETL
NSTL
维普
万方数据