Premium
Chemical composition of the light petroleum extract of Hibiscus cannabinus bark and core
Author(s) -
Seca Ana M. L.,
Silva Artur M. S.,
Silvestre Armando J. D.,
Cavaleiro José A. S.,
Domingues Fernando M. J.,
Neto Carlos P.
Publication year - 2000
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/1099-1565(200011/12)11:6<345::aid-pca540>3.0.co;2-t
Subject(s) - chemistry , hibiscus , bark (sound) , kenaf , chemical composition , composition (language) , organic chemistry , botany , linguistics , philosophy , physics , acoustics , biology , fiber
GC/MS studies of the light petroleum extracts obtained from different morphological regions of kenaf ( Hibiscus cannabinus ) showed large differences between the composition of the bark and of the core. The non‐polar lipid constituents were essentially fatty acids (30.7% in bark; 53.3% in core), long 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 eicosanoate (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 genus Hibiscus ), β‐sitosterol and stigmast‐4‐en‐3‐one were isolated by TLC and their structures confirmed by NMR experiments and by MS. The NMR structural characterisations reported permit the correction of some previously recorded 13 C NMR data. Copyright © 2000 John Wiley & Sons, Ltd.