Chemical composition of the light petroleum extract of Hibiscus cannabinusbark and core

Citation
Aml. Seca et al., Chemical composition of the light petroleum extract of Hibiscus cannabinusbark and core, PHYTOCH AN, 11(6), 2000, pp. 345-350
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
PHYTOCHEMICAL ANALYSIS
ISSN journal
0958-0344 → ACNP
Volume
11
Issue
6
Year of publication
2000
Pages
345 - 350
Database
ISI
SICI code
0958-0344(200011/12)11:6<345:CCOTLP>2.0.ZU;2-5
Abstract
GC/MS studies of the light petroleum extracts obtained from different morph ological regions of kenaf (Hibiscus cannabinus) showed large differences be tween the composition of the bark and of the core. The non-polar lipid cons tituents were essentially fatty acids (30.7 % in bark; 53.3 % in core), lon g chain alcohols (19.3 % in bark), alkanes (22.0 % in bark), sterols (12.5 % in bark; 25.4 % in core) and triterpenes (11.2 % in bark). Octacosanyl ei cosanoate (15.7 %) was detected only in the bark extract and was identified by NMR and MS experiments, and by GC/MS after transesterification. Motiol, stigmast-4-en-3,6-dione (both reported here for the first time in the genu s Hibiscus), beta -sitosterol and stigmast-4-en-3-one were isolated by TLC and their structures confirmed by NMR experiments and by MS. The NMR struct ural characterisations reported permit the correction of some previously re corded C-13 NMR data. Copyright (C) 2000 John Wiley & Sons, Ltd.