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Tsopmejio, J.P. (2011) Evaluation of Insecticidal and Antioxydant Activities of Leaves Extracts of Lippia rugosa A. Chev. (verbenaceae), Fractionation and Isolation of Antioxidant Compounds from Ethanol Extract. Master’s Dissertation, University of Ngaoundere (Cameroon). (In French)

has been cited by the following article:

• TITLE: Antioxidant Activity of the Natural Flavonoid 7-Hydroxy-5,6,4’-trimethoxyflavone Isolated from the Leaves of Lippia rugosa A. Chev

  AUTHORS: Jean Momeni, Jean Paul Tsopmejio, Francine T. Nkouam, Martin B. Ngassoum

  KEYWORDS: 7-Hydroxy-5, 6, 4’-trimethoxyflavone, Phenolic Compounds, Antioxidant Activity, DPPH Assay, Lippia rugosa, Organic Extracts

  JOURNAL NAME: Natural Science, Vol.8 No.2, February 22, 2016

  ABSTRACT: Phytochemical studies and antioxidant activities were carried out on n-hexane, ethyl acetate, ethanol and methanol extracts of the leaves of Lippia rugosa A. Chev (Verbenaceae), a medicinal plant used traditionally in the Cameroonian savannah’s region to protect foodstuffs and to cure degenerative diseases. Results indicated that theses extracts contain terpenoids, phenolic and flavonoid compounds. Except the n-hexane extract, all of the obtained extracts exhibit antioxidant activities with the ethanol extract being the most effective with an inhibition percentage of 85.668% ± 1.233% and an inhibition concentration (IC50) of 58 μg/ml (R2 = 0.987, P 50) of 221 μg/ml (R2 = 0.966, P L. rugosa and its antioxidant activity evaluated.