title: Evaluation of antioxidant potential of ethyl acetate extract/fractions of Acacia auriculiformis A. Cunn.
abstract: The present study estimates the free radical scavenging activity of the ethyl acetate extract/fractions of Acacia auriculiformis A. Cunn in different assays viz. 1'-1' diphenyl-2'picrylhydrazyl (DPPH), deoxyribose (site specific and non-site specific), relative reducing power, chelating power and lipid peroxidation. The bark powder of the plant was extracted with different solvents by maceration method in the order of increasing and decreasing polarity. The crude ethyl acetate extract was partitioned with ethyl acetate and water (Flow Chart 1 and 2). The scavenging activity of fractions was found to be more as compared to the crude extract. The percent inhibition with water fraction of ethyl acetate extract was observed to be 71.2%, 73.66%, 83.37%, 75.63% and 72.92% in DPPH, chelating power, lipid peroxidation, site specific and non-site specific deoxyribose scavenging assays respectively at maximum concentration tested. l-ascorbic acid and BHT were used as reference compounds for comparing the activity of plant extract/fractions. Studies are in progress to evaluate the effect of extract/fractions in other antioxidant assays and identify the factors responsible for the activity.
authors.affiliation: Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
authors.forename: Rajbir
authors.initials: R
authors.lastname: Singh
authors.forename: Sukhpreet
authors.initials: S
authors.lastname: Singh
authors.forename: Subodh
authors.initials: S
authors.lastname: Kumar
authors.forename: Saroj
authors.initials: S
authors.lastname: Arora
mesh_terms: D000045:Acacia / Q000737:chemistry*; D000085:Acetates / Q000737:chemistry; D001713:Biphenyl Compounds / Q000737:chemistry; D002614:Chelating Agents / Q000494:pharmacology; D003855:Deoxyribose / Q000737:chemistry; D004305:Dose-Response Relationship, Drug; D016166:Free Radical Scavengers / Q000737:chemistry / Q000494:pharmacology*; D005609:Free Radicals / Q000737:chemistry; D006834:Hydrazines / Q000737:chemistry; D015227:Lipid Peroxidation / Q000187:drug effects; D010084:Oxidation-Reduction / Q000187:drug effects; D010851:Picrates; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000085:Acetates; D001713:Biphenyl Compounds; D002614:Chelating Agents; D016166:Free Radical Scavengers; D005609:Free Radicals; D006834:Hydrazines; D010851:Picrates; D010936:Plant Extracts; D003855:Deoxyribose; C007650:ethyl acetate; C004931:1,1-diphenyl-2-picrylhydrazyl