ISSN 2326-7267
International Journal of Pharmacy and Pharmacology ISSN: 2326-7267 Vol. 3 (7), pp. 001-005, July, 2012. © International Scholars Journals
Full Length Research Paper
Compositions and comparison of the leaf and stem essential oils from Nigerian Hypoestes phyllostachya ‘rosea’ p. Beau. [acanthaceae]
D. O. Moronkola*, O. C. Atewolara-Odule and O. O. Olubomehin
Department of Chemical Sciences, Olabisi Onabanjo University, P. M. B. 2002, Ago-Iwoye, Ogun-State, Nigeria.
Accepted 11 March, 2012
Abstract
Leaf and stem volatile oils were obtained differently from Hypoestes phyllostachya ‘Rosea’ (Acanthaceae) in 0.36 and 0.13% yields, respectively. GC -MS analyses revealed 38 compounds are responsible for 99.86% of the leaf oil, and 26 compounds make-up 99.89% of the stem oil. Identified compounds were 26 in leaf, which make-up 93.43% of it; 21 identified in stem, which represent 90.45% of it. Leaf oil is dominated by sesquiterpenoids (69.37%), while stem oil contain mostly sesquiterpene hydrocarbons (87.25%). Most abundant compounds in leaf oil are: -elemenone (20.04%), 8-cendren-13-ol (19.35%), 5-cendranone (10.60%), guaiol (4.43%), geranyl tinglate (4.30%) and germacrene B (4.21%). Prominent compounds in stem oil are: viridiflorene (31.28%), allo-aromadendrene (14.65%), acoradiene (6.99%), -gurjunene (4.15%) and valencene (3.97%) . The known ubiquitous monoterpenes are not in both leaf and stem essential oils. We report 20 other compounds in leaf oil, and 16 other compounds in stem oil as composition of Hypoestes phyllostachya ‘Rosea’ which is scarce in literature.
Key words: Hypoestes phyllostachya ‘Rosea’, acanthaceae, essential oils, gas chromatography-mass spectroscopy [GC-MS], sesquiterpenoids.