Analysis of the Essential oils of Tagetes minuta and Artemisia rehan
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Date
1995-06
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Addis Ababa Universty
Abstract
The chemical compositions of the essential oils of the leaves
and flowers of Tagetes minuta L. were determined by
chromatographic and spectroscopic methods. The characteristic
components of the essential oils produced from the leaves of
T. minuta 'were found to contain (Z)-Ocimenone (41%) and (E)Ocimenone
(18%) as the major components, while the oils from
the flowers of T. minuta contained cis-p-ocimene (46%), (Z)-and
(E)-Ocimenones (22% and 10%, respectively).
The volatile oil constituents of the aerial parts of Artemisia
rehan plants purchased at different times were investigated
using gas chromatographic and spectroscopic techniques.
Differences in the camphor (5%, 30%, 31%), chamazulene (7.6%,
1.9%, 1%) composition and yield (0.3%, 0.4%, 0.8%) of these
oils was observed. Such differences in the essential oil
composition and yield may be ascribed to the existence of
different A. rehan chemotypes, seasonal variation or difference
in stages of development of the plant material
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Keywords
Tagetes minuta and Artemisia rehan