Phytochemical Investigationson the Seeds of Vernonia Galamensis
No Thumbnail Available
Date
2006-07
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa Universty
Abstract
The genus vernonia is one of the largest groups in the family Asteraceae and includes more than
1000 species distributed widely in tropical and sub tropical regions of Africa, Asia and America.
Vernonia galamensis is a new potential industrial oil seed crop for semiarid areas with very high
content of naturally epoxidized vernolic acid (80% of the oil). The epoxy oil of this seed also
contains linoleic acid (12% to14%), oleic acid (4% to 6 %), stearic acid (2% to 3%), palmitic acid
(2% to 3%) and a trace amount of arachidic acid.
The dichloromethane and methanol extracts of the seed of vernonia galamensis afforded VG-3 and
VG-4A respectively. The structural elucidation of these compounds was determined based on IR,
UV, 1H NMR, 13C NMR and 2D NMR (COSY, HSQC and HMBC) spectra. Moreover, the literature
values of selected 1H NMR and 13C NMR spectra of methyl vernolate are matched with 1H NMR
and 13C NMR spectra of VG-3 and VG-4A
Description
Keywords
Vernonia Galamensis