Journal of
Medicinal Plants Research

  • Abbreviation: J. Med. Plants Res.
  • Language: English
  • ISSN: 1996-0875
  • DOI: 10.5897/JMPR
  • Start Year: 2007
  • Published Articles: 3793

Full Length Research Paper

DPPH free radical scavenging activity of some Bangladeshi medicinal plants

S. M. Raquibul Hasan1, Md. Mokarram Hossain1, Raushanara Akter2, Mariam Jamila2, Md. Ehsanul Hoque Mazumder1* and Shafiqur Rahman3
1Department of Pharmacy, Jahangirnagar University, Bangladesh 2Department of Pharmacy, Stamford University, Bangladesh 3Department of Pharmacy, Bangladesh University, Bangladesh 3Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, SD 57007, USA.
Email: [email protected]

  •  Accepted: 24 June 2009
  •  Published: 30 November 2009


Hydromethanol extracts of fifteen Bangladeshi medicinal plants, traditionally used in different ailments, were evaluated for antioxidant potential using DPPH (1,1-diphenyl-2-picryl hydrazyl) radical scavenging assay. Among the extractsCocos nucifera, Caesalpinia pulcherrima, Punica granatum and Syzygium cumini were found displaying strong (90% or more) DPPH radical scavenging action. Syzygium cumini exhibited the highest radical scavenging, with an IC50value of 4.25 μg/ml compared to the IC50 value of 5.15 μg/ml as shown by the reference antioxidant ascorbic acid, in a dose dependent fashion.


Key words: Antioxidant, medicinal plants, Bangladesh, DPPH free radical.