Fractional vacuum distillation of herring oil methyl esters |
| |
Authors: | R G Ackman P J Ke P M Jangaard |
| |
Affiliation: | (1) Fisheries Research Board of Canada, Halifax Laboratory, Halifax, Nova Scotia, Canada |
| |
Abstract: | Methyl esters of a Canadian Atlantic herring oil containing 62% monoethylenic fatty acids were subjected to batch fractional
distillation under vacuum on a pilot plant scale, to study the feasibility of fractionating fatty acid esters of marine oils
of low iodine value into monounsaturated fractions with increased commercial value for industrial chemical uses. A total of
64 methyl ester fractions were collected and analyzed by gas liquid chromatography. Recoveries of the major saturated and
monounsaturated acids were close to 100%, and some fractions contained over 90% of the desired 22:1 long chain monounsaturated
acids. The short chain polyunsaturated acids were recovered in good yields, but the long chain highly unsaturated acids were
recovered in yields of 60% or less due to oxidative and thermal decomposition in the particular apparatus employed. If small
amounts of unsaturated acids are acceptable, fractional distillation of low iodine value marine oils could inexpensively supply
fractions with high concentrations of methyl esters of longer chain (C20 and C22) monounsaturated and shorter chain (C14) saturated acid or (C16) saturated-monounsaturated acid mixture. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|