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International Journal of Pharmacology

Year: 2008 | Volume: 4 | Issue: 2 | Page No.: 120-124
DOI: 10.3923/ijp.2008.120.124

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Authors


Y. Potchoo


I.P. Guissou


M. Lompo


E. Sakie


B. Yaro


Keywords


  • Annona senegalensis from Burkina Faso
  • Annona senegalensis from Togo
  • antioxidant activity
  • aqueous methanol extracts
  • ethyl acetate extracts
  • total flavonoids
  • total polyphenols
Research Article

Antioxidant Activity of Aqueous Methanol and Ethyl Acetate Extract of Leaves of Annona senegalensis Pers from Togo Versus the One Originates from Burkina Faso

Y. Potchoo, I.P. Guissou, M. Lompo, E. Sakie and B. Yaro
The aim of the present study is to evaluate and compare the antioxidant potential of the leaves extracts of Annona senegalensis (Annonaceae) of Togo versus the one of Burkina Faso. To this end, aqueous methanol and ethyl acetate extracts by splitting and by steeping were achieved and the determination of total polyphenols of which flavonoids was carried out. A survey of the antioxidant activity using the DPPH methods was performed. The content in total polyphenol (3.47 ± 0.03%) and flavonoid (2.33 ± 0.17%) of 70% (v/v) aqueous methanol extract of the specimen from Togo was significantly higher than the one from Burkina (2.66 ± 0.08 and 1.64 ± 0.04%, respectively) (p<0.00001 for total polyphenol; p<0.05 for total flavonoid), whereas, the amount of total flavonoid in the ethyl acetate extract of the species from Burkina (40.38%) was triplicated. For the two types of extracts, the species of Burkina Faso showed an improved antioxidant activity than the one of Togo (IC50 = 8.51 and 21.08 μg mL-1 versus 12.46 and 29.22 μg mL-1, respectively) (p<0.05). These free radicals inhibition activity of the extracts may be due at least to polyphenolic flavonoids identified by means of HPLC assay performed in the preliminary study. These flavonoids were rutin and isoquercetrin as flavanols (specimen from Togo) of which are added epicatechin and catechin derivatives (flavanols) in the specimen from Burkina. The traditional use of plant leaves may imply in part this activity against the free radicals.
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How to cite this article

Y. Potchoo, I.P. Guissou, M. Lompo, E. Sakie and B. Yaro, 2008. Antioxidant Activity of Aqueous Methanol and Ethyl Acetate Extract of Leaves of Annona senegalensis Pers from Togo Versus the One Originates from Burkina Faso. International Journal of Pharmacology, 4: 120-124.

DOI: 10.3923/ijp.2008.120.124

URL: https://scialert.net/abstract/?doi=ijp.2008.120.124

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