Browsing by Author "A.T. Ajiboye*, T.O. Lasisi, Z.F. Adebayo, A.T.Hassan and Z.A. Abdusalam"

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    Phytochemical and Antioxidant Potentials of Some Indigenous Vegetables Cultivated in Malete, Kwara State, Nigeria
    (2021-02-27) A.T. Ajiboye*, T.O. Lasisi, Z.F. Adebayo, A.T.Hassan and Z.A. Abdusalam
    Abstract: Indigenous vegetables are important sources of natural antioxidant which play important role in prevention of degenerative diseases. In this study, five indigenous vegetables (Ocimum basilicum, Celosia argentea, Amaranthus virides, Talinum triangulare and Corchorus olitorius) cultivated in Malete, Nigeria were extracted in 95 % methanol and investigated for their phytochemical compositions and antioxidant activities using 2, 2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis-(3- ethylbenzothiazoline-6-sulphonic acid) (ABTS•+) and hydrogen peroxide radical scavenging assays. The comparative thin layer chromatography (TLC) of the extracts was carried out on silica gel coated plate developed in a mixture of organic solvents and visualized with the aid of ultraviolet visible light (uv) at 254 nm, ferric chloride solution and vanillin-H2SO4 spray reagent. The result of TLC analysis showed many visible components under uv light at 254 nm and after treated with spray reagents, indicating the presence of many important phytochemicals in the extracts of vegetables. The results of the phytochemical screening revealed the presence of various medicinally active compounds such as flavonoids, phenols, alkaloids, terpenoids, saponins etc. in various extracts of indigenous vegetables. Among the five indigenous vegetables tested, the C.olitorius and O.bacilicum extracts exhibited the highest antioxidant potentials against DPPH, ABTS and Hydrogen peroxide. This finding provides insight into the bioactive components and antioxidant potentials of indigenous vegetables cultivated in Malete.