EVALUATION OF ANTIOXIDANT ACTIVITY OF AQUEOUS AND METHANOLIC EXTRACTS OF MORINDA CITRIFOLIA (NONI) LEAVES CULTIVATED IN KOUITONGUINÉ (WESTERN REGION CÔTE D'IVOIRE)
Mohamed Anderson YEO*, Gilles Léonce Niamketchi, Kalamourou Silue and Lacina Coulibaly
ABSTRACT
The study was designed to investigate the phytochemical screening and antioxidant properties of Morinda citrifolia leaves (Noni; Rubiaceae) cropped in Man, West region of Cote d’Ivoire. Aqueous and methanolic extract obtained from M. citrifolia were subjected to phytochemical analysis. It proved that M. citrifolia contain large amount of secondary metabolite like polyphenols, flavonoids, tannins, alkaloids, saponins, cardiotonic glycosides, polyterpenes and sterols whereas quinones and coumarins were absent. Spectrophotometric analysis confirmed the presence of total polyphenols and flavonoids contents in methanolic and aqueous extracts with value of 56 mg GAE/g and 5 mg GAE/g for polyphenols and 11.06 mg GAE/g and 1.7 mg GAE/g for flavonoids respectibility. Antioxidant activity is measured by their ability to scavenge the free radicals of DPPH method. These assays confirmed the presence of antioxidants in the methanolic extract of Morinda citrifolia.
Keywords: Morinda citrifolia, phytochemical screening, antioxidant activity, leaves, Man.
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