Anomalous high iodine value of squalene and the impact on iodine values of shark liver oils |
| |
Authors: | R G Ackman E Macpherson A Timmins |
| |
Affiliation: | (1) Canadian Institute of Fisheries Technology, DalTech, Dalhousie University, 1360 Barrington St., P.O. Box 1000, B3J 2X4 Halifax, Nova Scotia, Canada |
| |
Abstract: | Squalene has six ethylenic bonds, but the experimental iodine values in two different solvent systems—chloroform and cyclohexane/acetic
acid—were 25% higher than the theoretical values. We propose that this results from an additional halogen adding at each of
the two terminal ethylenic bonds carrying two methyl groups. In the solvent system of cyclohexane alone, the excess is only
3–4% greater than the theoretical. Mixtures of squalene in seal oil confirmed the additivity of the experimental squalene
high iodine value and the seal oil fatty acid iodine value with reasonable accuracy but depended on the skill of the operator
in obtaining the titration end point for cyclohexane/acetic acid. This observation has particular relevance for shark liver
oils and olive oils. |
| |
Keywords: | Iodine value olive oil shark liver oil squalene |
本文献已被 SpringerLink 等数据库收录! |
|