首页 | 本学科首页   官方微博 | 高级检索  
     


Autoxidative rates of nonmethylene-interrupted polyenoic fatty acids
Authors:Toru Takagi  Kazuo Miyashita
Affiliation:(1) Department of Chemistry, Faculty of Fisheries, Hokkaido University, O41 Hakodate, Japan
Abstract:Autoxidative rates of free fatty acids and methyl esters increased in the following order: oleic (c9–18:1), c5, c9–18:2, linoleic (c9,c12–18:2), c5,c9,c12–18:3, t5,c9,c12–18:3, and linolenic (c9,c12,c15–18:3). The increase of the rates due to the Δ5-olefinic bond was much lower than that due to an olefinic bond extension in a methylene-interrupted sequence. Agreement of the oxidative rates obtained from conjugated diene content with those obtained from POV showed that oxygen attack did not occur at the isolated olefinic bond, but at the methylene-interrupted diene in the oxidation of 5,9,12–18:3. The Δ5-olefinic bond may promote the oxidation of the methylene-interrupted diene intramolecularly.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号