Study of Oils and Flavonoids From Some Medicinal Plant Grown in Sudan and Their Biological Activity

Abstract

The research is a study of five Sudanese Medicinal plants . The oils from the five plants were studied by gas chromatography- mass spectra and then the biological activity was evaluated. In addition the major flavonoid of Pomegranate (compound I ) was isolated by paper chromatography and identified by NMR and UV - Visible data. GC-MS analysis of Keaaf showed presence of 26 components the major constituents were : 9, 12-octadecadienoic acid methyl ester (29.48 % ), hexdecanoic acid methyl ester(21.72 %), 9-octadecenoic acid methyl ester(18.54%) and methyl stearate (9.33 % ). Devil,s Claw showed 15components. Major constituents of the oil were: 9,12-octadecadienoicacid methyl ester(43.99%) ;9-octadecenoic acid methyl ester (25.40%) ; hexadecanoic acid methyl ester (12.01%) and methyl stereate(8.89%). El Defra oil gave 23 components the major were: 13,16-docasadienoic acid: (21.00 % ), n- hexdecanoic acid(15.00 % ) ; oleic acid ( 9.61 % ) . El hantout showed presence of 20 components the major were: 9, 12-octadecadienoic acid methyl ester (32.29 % ), hexdecanoic acid methyl ester(25.27 % ), methyl stearate(14.64 % ) and 9-octadecnoic acid methyl ester(7.32%) . 17 Components were detected in Um mamleha with major constituent: 9, 12-octadecadienoic acid methyl ester (32.37 % ) ; hexdecanoic acid (30.93 % ); 9-octadecenoic acid methyl ester(19.13%) and methyl stearate (7.53 % ). The studied oils showed varying antimicrobial responses towards standard bacteria and fungi .Um mamleha gave weak antioxidant activity.