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Free radical scavenging activity of Syzygium polyanthum leaves


Yassir, M. A. and Abdul Kadir, Arifah and Ismail, Amin and Othman, Fauziah (2012) Free radical scavenging activity of Syzygium polyanthum leaves. In: International Conference on One Health and 24th VAM Congress 2012, 21-23 Sept. 2012, Marriott Putrajaya. (pp. 399-401).


There is a growing interest in the usage of antioxidants in attempt to prevent oxidative damage caused by free radicals in the human body. This study was undertaken to determine the free radical scavenging activity of methanolic extract of Syzygium polyanthum (SP) leaves against the stable 2,2-Azino-bis-3-ethylbenzothiazoline-6-sulfonic Acid (ABTS) radical by using an ELISA reader technique. The results showed that SP directly reacted and quenched ABTS free radicals in the system. The IC50 value of SP was significantly (P <0.05) more effective than that of ascorbic acid, and quenched significantly (P <0.05) more ABTS radicals at low concentrations (5 and 10 μg/mL) than that of ascorbic acid. Moreover, the total antioxidant capacity (TAC) of SP was also significantly (P <0.05) higher than that of ascorbic acid under same experimental condition. In conclusion, the results of ABTS assay reveal potent antioxidant and free radical scavenging activity of SP higher than that of standard ascorbic acid which may serve as a new natural antioxidant.

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Additional Metadata

Item Type: Conference or Workshop Item (Poster)
Divisions: Faculty of Medicine and Health Science
Faculty of Veterinary Medicine
Keywords: ABTS assay; Syzygium polyanthum; Free radical scavenging activity
Depositing User: Nabilah Mustapa
Date Deposited: 01 Mar 2017 09:38
Last Modified: 01 Mar 2017 09:38
URI: http://psasir.upm.edu.my/id/eprint/50247
Statistic Details: View Download Statistic

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