الفهرس 
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Abstract
I’
This thesis includes three chapters; the first of which is a review on the
identification of the different components in each constituent of myrrh,
and its taxonomy, as well as the medicinal action and uses of different
species of myrrh.
The second chapter is divided into five subchapters. where the first of
which describes the strategy for isolating the bioactive component of
myrrh, while the second one includes the gas chromatography/ Mass
Spectrometry (Ge/MS) study of the oily fraction, volatile oil and the
precipitate obtained from extraction with n-hexane. The third and the
fourth sub-chapter deal with the determination of the bioactive
component and the evaluation of molluscicidal activity of myrrh on
Biomphalaria alexandrina snails and the last one studies the statistical
analysis of the results of biological activities.
The extraction of myrrh with petroleum ether, benzene, n-hexane and
diethyl ether gave oily products. When the n-hexane extract was left
aside, a precipitate was found. Filtration followed by evaporation of the
mother liquor gave the same oil which was isolated from the other
organic solvents. The oily product as well as the volatile oil which was
obtained from steam distillation of crude powdered myrrh was
/
fractionated using column chromatography.