title: Pedalium murex Linn (Pedaliaceae) fruits: a comparative antioxidant activity of its different fractions.
abstract: OBJECTIVE
  To examine the antioxidant activity and total phenolic content of different solvent fractions of Pedalium murex (P. murex) Linn fruits (Family: Pedaliaceae) as well as the correlation between the total antioxidant capacity and total phenolic content.
  
  
  METHODS
  In the present study, the antioxidant activities of P. murex were evaluated using six in-vitro assays, namely total antioxidant assay, DPPH assay, reducing power, nitric oxide scavenging, hydrogen peroxide scavenging and deoxyribose scavenging assays, and total phenol contents were also investigated.
  
  
  RESULTS
  The ethyl acetate (EA) fraction was found to have high levels of phenolic content (298.72±2.09 mg GAE/g). The EA fraction exhibit higher total antioxidant capacity, higher percentage of DPPH radical scavenging activity (135.11±2.95µg/mL), nitric oxide (200.57±4.51µg/mL), hydrogen peroxide (217.91±6.12 µg/mL), deoxyribose (250.01±4.68µg/mL) and higher reducing power. Correlation coefficient (r(2) =0.914) was found to be significant between total phenolic content and total antioxidant activity.
  
  
  CONCLUSIONS
  In general, the results indicate that the EA fractions are rich in phenolic antioxidants with potent free radical scavenging activity implying their importance to human health.
authors.affiliation: Pharmacognosy Research Laboratory, Department of Pharmaceutics, Institute of Technology, Banaras Hindu University, Varanasi-221005, Canada.
authors.forename: D K
authors.initials: DK
authors.lastname: Patel
authors.forename: R
authors.initials: R
authors.lastname: Kumar
authors.forename: S K
authors.initials: SK
authors.lastname: Prasad
authors.forename: S
authors.initials: S
authors.lastname: Hemalatha
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000378:metabolism*; D001713:Biphenyl Compounds / Q000032:analysis / Q000378:metabolism; D005638:Fruit / Q000737:chemistry*; D029601:Pedaliaceae / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry; D010851:Picrates / Q000032:analysis / Q000378:metabolism; D010936:Plant Extracts / Q000737:chemistry / Q000378:metabolism*
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D010636:Phenols; D010851:Picrates; D010936:Plant Extracts; C004931:1,1-diphenyl-2-picrylhydrazyl
keywords: Antioxidant activity; Different solvent fraction; In vitro assay; Pedalium murex; Scavenging activity; Total phenolics