SCAVENGING OF FREE RADICALS AND TOTAL PHENOLS OF METHANOL EXTRACT OF AZIMA TETRACANTHA LAM
Journal Title: International Journal of Pharmacy and Pharmaceutical Sciences - Year 2014, Vol 6, Issue 9
Abstract
Objective: To report the antioxidant activity, phenolic acid profile of the Azima tetracantha methanolic extract and find the correlation between the total phenolic content and their relative antioxidant activityMethods: The total antioxidant activity, hydroxyl radical and hydrogen peroxide scavenging of A. tetracantha methanol extract was evaluated by adopting various standard methods. Total phenolic content was estimated from dried methanolic extract and the phenolic acids in the extract were identified by HPLC.Results: The methanolic extract of A. tetracantha showed free radical scavenging in a concentration dependant manner. The studies showed that the extract possess high free radical scavenging property, especially against hydroxyl radicals (67.61±0.42%). The correlation analysis results showed linear relation between phenolics content of methanolic extract and antioxidant assays (R2=0.97, 0.94, 0.99 and 0.98, significance at P<.0.001). The phenolic acid profile showed the presence of both benzoic acid and cinnamic acid derivatives, well known for their antioxidant potential.Conclusion: The current observations suggested that the methanol extract of A. tetracantha exhibited multiple antioxidant activities, by scavenging free radicals. So, it can be concluded that the extract is a source of natural antioxidant, suggesting its traditional use as a rejuvenating agent.Â
Authors and Affiliations
Gayathri Gopalakrishnan, Bindu Nair Rajeshwari Nair, Babu V
Keywords
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