Phytochemical Investigation of the Resins of Boswellia Species Collected from Kebtele Area in Agew-Awi (Gojjam)
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Date
2007-07
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Addis Ababa Universty
Abstract
The genus Boswellia is one of the 17 genera belonging to Bureseraceae
family. In the course of this study leaves and barks of Boswellia species
and its resins were collected from Kebtele area for botanical identification
and chemical analysis. The species was identified by Dr. Kaj Vollesen
(Kew Royal Botanical Garden, U.K.) as Boswellia papyrifera.
The essential oils of the resins from Boswellia sp. (Kebtele) and B.
papyrifera (obtained from Markato) were isolated by hydrodistillation and
some of the components identified by GC. The major components
Boswellia sp. (Kebtele) were verticilla-4(20),7,11-triene (BK1) (65%),
octylacetate (4%) and other four unknown components whose
compositions of the oil near to 4 %. This analysis gave a different result
compared to the report of Dekebo et al. [26], Hamm et al. [9] and B.
papyrifera (obtained from Markato) with octyl acetate (≥56 %) and noctanol
(≥5 %) as their common major components and verticilla-
4(20),7,11-triene was absent in any of the three. Basar et al. (2001)[34]
isolated and identified verticilla-4(20),7,11-triene the first time in the
essential oil of B. carteri (6% of the oil).In this work it was also possible to isolate three compounds from the petrol
extract of the resins: verticilla-4(20),7,11-triene, partially characterized diterpene
(BK3) and uncharacterized white crystalline solid (BK6).
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Keywords
Boswellia Species