摘要
鸟桕梓油中含有一种特殊结构的四酯成分，四酯分子水解得到结构特殊的中长链脂肪酸2，4-癸二烯酸，这种烯酸含有多种官能团，性能活泼，具有潜在的应用价值和研究意义。通过酯交换，将梓油中的三酰甘油和四酰甘油转化为脂肪酸甲酯。经过气相色谱-质谱联用仪（GC—MS）分析，得出乌桕梓油的脂肪酸甲酯主要为亚油酸甲酯和亚麻酸甲酯，它们各占梓油脂肪酸甲酯总量的30．1％和41．3％，2，4-癸二烯酸甲酯大约占梓油脂肪酸甲酯的4．2％。采用减压间歇精馏的方法，在精馏压力低于500Pa、回流比为l的工艺条件下，收集塔顶温度在93～93℃的塔顶馏分，得到纯度为96．0％的2，4-癸二烯酸甲酯产品，2，4-癸二烯酸甲酯的收率为76．5％。
Stillingia oil extracted from the seeds of Sapium sebiferum Roxb has a special structure of tetracylglycerols. 2,4 - decadienoic acid and 8 - hydroxy -5,6 - octadienoic acid can be obtained from hydrolysis of tetracylg- lycerols. There are multiple functional groups in the two fatty acids, which have great developing value and market prospect. The methyl linolenate containing 41.3 % and the methyl linoleate containing 30.1% were the main composi- tion of stillingia oil methyl ester gained through gas chromatography - mass spectrometry （ GC - MS） analysis. The content of methyl 2,4 - decadienoate was 4.2%. Methyl 2,4 - decadienoate can be separated from the fatty acid methyl ester （FAME） by vacuum batch distillation. When the distillation pressure was lower than 500Pa and the re- flux ratio was 1, the tower fraction of 90 -93 ~C could be collected. Methyl 2,4 -decadienoate with purity of 96.0% could be obtaind. The yield of methyl 2,4 - decadienoate is 76.5%.
出处
《中国粮油学报》
EI
CAS
CSCD
北大核心
2014年第1期57-60,共4页
Journal of the Chinese Cereals and Oils Association
基金
浙江省重大科技专项(2006C11015)
浙江省教育厅项目(Y201224695)
关键词
乌桕梓油
四酰甘油
2
4-癸二烯酸甲酯
分离
stillingia oil, tetracyglycerols, methyl 2,4 - decadienoate, separation
