Characterization of Oils from some Sudanese Medicinal Plants and their Antimicrobial Activity

Abstract

In this study, six Sudanese plant species(Eucalyptus camaldulensis, Kegalia Africana, Beta vulgaris, Tephrosia apollina, Dichrostachys cinera and Annona squamosa) have been investigated. These plant species are of medicinal attributes and potentials. They have been studies by GC-MS. The target plants have also been assessed for their antimicrobial activity. The GC-MS analysis of Beta vulgaris oil showed the presence of 35 components.. Fatty acids constituted major bulk of the oil(99.67%). Terpenes(0.03%) and hydrocarbons(0.03%) appeared as minor constituents. The studied oil showed significant activity against Bacillus subtilis and moderate anticandidal activity. Tephrosia apollina oil was analyzed by GC-MS . The analysis showed 22 components. Fatty acids constituted 97.96% , the rest is ᴕ-sitosterol (2.04%).The studied oil showed significant activity against Bacillus subtilis , Staphylococcus aureus and Escherichia coli. GC-MS analysis of Eucalyptus camaldulensis volatile oil was conducted. Thirty seven constituents were identified by GC-MS.Major constituent was : 9,12-octadecadienoic acid methyl ester (54.74%).The oil showed moderate antibacterial activity against Staphylococcus aureus and Escherichia coli. GC-MS analysis of Annona squamosa oil was conducted. Twenty two constituents were identified. The oil showed moderate anticandidal activity. Dichrostachys cinera oil was analyzed by GC-MS. Twenty three constituents were identified.. Major components are: 9,12-octadecadienoic acid methyl ester(30.87%) and 9-octadecenoic acid methyl ester(27.02%).The oil showed significant antibacterial activity against Staphylococcus aureus and Bacillus subtilis. The oil from Kegalia Africana was analyzed by GC-MS. Twenty three constituents were identified.Major components are: 9,12,15-octadecatrienoic acid methyl ester(31.32%) and 9,12-octadecadienoic acid methyl ester(29.44%).The oil showed moderate anticandidal activity