African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Comparison of the antioxidant activity and total phenolic contents in some Stachys species

Mahnaz Khanavi1, Mannan Hajimahmoodi2*, Mina Cheraghi-Niroomand2, Zahra Kargar2, Yousef Ajani3, Abbas Hadjiakhoondi1, Mohammad R. Oveisi2
  1Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box: 14155-6451, Tehran, Iran. 2Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box: 14155-6451, Tehran, Iran. 3Department of Pharmacognosy, Institue of Meicinal Plants, ACECR, P.O. Box: 13145-1446, Tehran, Iran.
Email: [email protected]

  •  Accepted: 27 January 2009
  •  Published: 20 March 2009

Abstract

 

The methanolic extracts of the aerial parts of nine Stachys species: S. persicaGmel., S. fruticulosa M. B., S. laxa Boiss. & Buhse., S. inflata Benth., S. turcomanica Trautv., S. subaphylla Rech. F., S. setifera C. A. Mey., S. byzantina C. Koch and S. trinervis Aitch. & Hemsl. were investigated for their antioxidant activity and total phenolic content using FRAP and Folin-Ciocalteu assays respectively. S. persica Gmel. and S. fruticulosa M. B. had the highest antioxidant activity (61.42 and 62.02 mmol FeII/100g) and total phenolic content (3294.96 and 4450.36 mg gallic acid/100 g) among these nine species. There was a direct correlation between total phenol and antioxidant activity (R2 = 0.9446, p ≤ 0.001) which indicates that polyphenols are the main antioxidants.

 

Key words: Stachys, antioxidant, total phenol.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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