Ogunlana, Oluseyi Ebenezer and Ogunlana, Olubanke Olujoke and Farombi, E. Olatunde
(2008)
Morinda Lucida: Antioxidant and Reducing Activities of Crude Methanolic Stem Bark Extract.
Advances in Natural and Applied Sciences, 2 (2).
pp. 49-54.
ISSN ISSN 1995-0748
Abstract
The antioxidant activity of Morinda lucida (Benth.) stem bark was investigated. Air dried stem bark of
Morinda lucida was powdered and extracted with 95 % v/v methanol and the extract concentrated at 40oC
using rotary evaporator. The total phenolic composition of methanolic extract of air - dried stem bark was estimated using spectrophotometric method. Phenolic composition was calculated to be approximately 80 %. Antioxidant activity of the extract was determined using its ability to prevent the oxidation of â-carotene. Ferric reducing ability of extract was also determined. Antioxidant and ferric reducing activities exhibited by plant extract were concentration dependent. Plant extract achieved a maximum antioxidant activity of 6% within 40minutes. The total phenolic content, antioxidant activity and reducing power of the extract had direct relationship.
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