IdentificationofConstituentsandAntimicrobialActivityof OilsfromSelectedMedicinalPlants

Abstract

In this study the oils from six plants of medicinal attributes (Indigofera arrect, Indigofera hirsutal, Lagenaria siceraria, Fallopia conuolulus , Dicoma tomentoza and Carica papya) have been investigated by GC.MS and the antimicrobial activity has been screened. The fatty acid contents of the oils was determined by retention times and the observed fragmentation pattern . Sixteen components of Indigofera arrect, 19 components of Indigofera hirsutal, 9 components of Lagenaria siceraria oil, 23 components of Fallopia conuolulus oil, 20 components of Carica papaya oil and18 components of Dicoma tomentoza oil were detected in total ion chromatograms being dominated by : Hexadecanoic acid methyl ester presence in Indigofera arrect, Lagenaria siceraria, Fallopia conuolulus and Dicoma tomentoza (34.14 %, 10.15%, 22.67 %, 16.57 % ). 9,12-Octadecadienoic acid (Z,Z)-, methyl ester presence in Indigofera arrect and Lagenaria siceraria (31.76 %, 19.56 % ). 9,12,15- Octadecatrienoic acid, methyl ester, (Z,Z,Z)-found in Indigofera arrect and Indigofera hirsutal (15.56 %, 25.63 % ). 9-Octadecnoic acid methyl ester presence in Indigofera hirsutal, Fallopia conuolulus, Carica papya and Dicoma tomentoza (22.49%, 25.77%, 18.182 %, 39.78 % ). 9, 12- octadecadienoic acid methyl ester precence in Indigofera hirsutal, Fallopia conuolulus and Dicoma tomentoza (32.40 %, 32.34 %, 14.50% ). Linoleic acid ethyl ester precence in Lagenaria siceraria (57.96 % ). Methyl stearate precence in Fallopia conuolulus ( 11.17% ). Oleic acid, Ethyl oleate, Stigmasterol, Dodecen-1-yl(-)succenic acid anhydride and gamma-Sitosterol precence in Carica papya (12.961 %, 11.52 %, 5.85%, 5.40%). The six oils was screened for antimicrobial activity against five standard organisms. The oils of Indigofera arrect, Carica papya and V Dicoma tomentoza showed significant activity against Escherichia coli The Indigofera hirsutal, oil showed significant activity against Staphylococcus aureus and Bacillus subtilis. The oil of Lagenaria siceraria showed moderate activity against Pseudomonas aeroginosa.While, the oil of Fallopia conuolulus showed moderate activity against Staphylococcus aureus beside moderate anticandidal activity. The oil of Dicoma tomentoza moderate activity against Staphylococcus aureus , Pseudomonas aeroginosa and Candida albicans. Also the oil of Carica papya exhibited moderate activity against Bacillus subtilis and Staphylococcus aureus beside weak anticandidal activity.