title: In vitro antioxidant activities of leaf and root extracts of Albizia antunesiana harms.
abstract: The antioxidative activities of the ethanol and aqueous extracts of the leaf and root samples of Albizia antunesiana were determined across a series of four in vitro models. The results showed that all the extracts had reducing power (Fe(3+)- Fe2+), DPPH, hydroxyl and nitric oxide radical scavenging abilities. The ethanol root extract had more potent antioxidant power in all the experimental models and possesses a higher total phenol content of 216.6 +/- 6.7 mg/g. The GC-MS analysis of the aqueous and ethanol extracts of the roots and leaves indicated that several aromatic phenolic compounds, a coumarin and some common triterpenoids were present in these extracts. Data from this study suggest that the leaves and roots of Albizia antunesiana possessed antioxidative activities that varied depending on the solvents.
authors.affiliation: School of Life Sciences, University of KwaZulu-Natal (Westville Campus), Durban 4000, South Africa.
authors.forename: Talent
authors.initials: T
authors.lastname: Chipiti
authors.affiliation: School of Life Sciences, University of KwaZulu-Natal (Westville Campus), Durban 4000, South Africa.
authors.forename: Mohammed Auwal
authors.initials: MA
authors.lastname: Ibrahim
authors.affiliation: School of Chemistry and Physics, University of KwaZulu-Natal (Westville Campus), Durban 4000, South Africa.
authors.forename: Neil Anthony
authors.initials: NA
authors.lastname: Koorbanally
authors.affiliation: School of Life Sciences, University of KwaZulu-Natal (Westville Campus), Durban 4000, South Africa.
authors.forename: Md Shahidul
authors.initials: MS
authors.lastname: Islam
mesh_terms: D031289:Albizzia / Q000737:chemistry; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D001713:Biphenyl Compounds / Q000737:chemistry; D004305:Dose-Response Relationship, Drug; D000431:Ethanol / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D017665:Hydroxyl Radical / Q000737:chemistry; D009569:Nitric Oxide / Q000737:chemistry; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D008517:Phytotherapy; D010851:Picrates / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D018515:Plant Leaves; D018517:Plant Roots; D010946:Plants, Medicinal; D012997:Solvents / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D010636:Phenols; D010851:Picrates; D010936:Plant Extracts; D012997:Solvents; D014867:Water; D009569:Nitric Oxide; D017665:Hydroxyl Radical; D000431:Ethanol; C004931:1,1-diphenyl-2-picrylhydrazyl