Phytochemical Screening, Chemical Composition and Antioxidant Activity of Leaves and Bark Extracts from Khaya senegalensis

Khaya senegalensis belonging to family Meliaceae. This plant has been used as traditional medicine for several disease such as pain, inflammation, malaria, anemia, diabetic and gastrointestinal diseases. The objective of this study to carry out phytochemical screening, determination of chemical composition and determine antioxidant activity of plant extracts. Many of secondary metabolites were investigated in leaves extract include alkaloids, flavonoids, sterols and saponins while the bark extract includes sterols, triterpines, tannins and saponins. The antioxidant potential of ethanol extract of leaves and bark was determined on the basis of their scavenging activity of the stable 1, 1-diphenyl-2-picryl hydrazyl (DPPH) free radical. Antioxidant activity of leaves extract was higher than bark with (42.69%) and (36.36%) respectively. The quantitative analysis of chemical composition was determined by Gas Chromatography–Mass Spectrometry (GC-MS). A number of bioactive compounds were present in the leaves and bark of K.senegalensis. The highest compound in both extracts represented the reducing sugar 4-O-Methyl mannose (66.47 and 14.73%) in bark and leaves respectively. Fatty acids and phenols were presented in high percentage in both extract include; n-Hexadecanoic acid, 9,12,15-Octadecatrienoic acid, Oleic Acid and Catechol