Antioxidant properties of methanolic extracts from leaves of Rhazya stricta.
Because of increased safety concerns about synthetic antioxidants, exploitation of cheaper and safer sources of antioxidants based on natural origin is the focus of research nowadays. Rhazya stricta is a medicinally important plant native to South Asia. Extraction of antioxidants was carried out in different solvent systems, i.e., water, 80% methanol, 70% ethanol, and diethyl ether. The methanolic extract exhibited the highest total phenolic content among the extracts; therefore for further studies the methanolic extract was employed. Antioxidant activity measurement in the linoleic acid system, metal chelating activity, reducing power, scavenging effect on 1,1-diphenyl-2-picrylhydrazyl free radical, and superoxide anion radical scavenging activity were taken as the parameters for assessment of antioxidant potential of methanolic extracts. Results were compared with alpha-tocopherol and the synthetic antioxidant butylated hydroxyanisole. The antioxidant potential of methanolic extracts of R. stricta leaves was comparable with previously exploited potent antioxidants and is strongly concentration dependent.
Iqbal
Shahid
S
Departments of Chemistry , University of Sargodha, Sargodha, Pakistan. ranashahid313@gmail.com
Bhanger
M I
MI
Akhtar
Mubeena
M
Anwar
Farooq
F
Ahmed
Khawaja Raees
KR
Anwer
Tabraz
T
D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D029062:Apocynaceae / Q000737:chemistry*; D001713:Biphenyl Compounds; D002083:Butylated Hydroxyanisole / Q000737:chemistry; D002614:Chelating Agents; D016166:Free Radical Scavengers / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D019787:Linoleic Acid / Q000737:chemistry; D000432:Methanol; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis; D010851:Picrates / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry*; D013481:Superoxides / Q000737:chemistry; D024502:alpha-Tocopherol / Q000737:chemistry
D000975:Antioxidants; D001713:Biphenyl Compounds; D002614:Chelating Agents; D016166:Free Radical Scavengers; D010636:Phenols; D010851:Picrates; D010936:Plant Extracts; D013481:Superoxides; D002083:Butylated Hydroxyanisole; D019787:Linoleic Acid; C004931:1,1-diphenyl-2-picrylhydrazyl; D007501:Iron; D024502:alpha-Tocopherol; D000432:Methanol