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Effect of Polymerization on Antioxidant and Xanthine Oxidase Inhibitory Potential of Sea Buckthorn (H. rhamnoides) Proanthocyanidins
Article first published online: 31 AUG 2012
DOI: 10.1111/j.1750-3841.2012.02884.x
© 2012 Institute of Food Technologists®
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How to Cite
Arimboor, R. and Arumughan, C. (2012), Effect of Polymerization on Antioxidant and Xanthine Oxidase Inhibitory Potential of Sea Buckthorn (H. rhamnoides) Proanthocyanidins. Journal of Food Science, 77: C1036–C1041. doi: 10.1111/j.1750-3841.2012.02884.x
Publication History
- Issue published online: 12 OCT 2012
- Article first published online: 31 AUG 2012
- MS 20120069 Submitted 1/13/2012, Accepted 6/21/2012.
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Keywords:
- antioxidant;
- degree of polymerization;
- Hippophae rhamnoides;
- proanthocyanidins;
- xanthine oxidase
Abstract: Inhibitory potential of sea buckthorn (Hippophae rhamnoides L) seed proanthocyanidins against oxidative stress and xanthine oxidase activity was evaluated. Composition of antioxidant proanthocyanidins was profiled by analyzing the cleavage products obtained by the acid catalyzed hydrolysis in the presence of phloroglucinol. Catechin, epicatechin, gallocatechin, and epigallocatechin were found as the extension and terminal subunits of proanthocyanidins with an average degree of polymerization (ADP) of 14.7. Seed proanthocyanidins showed considerably high antioxidant and xanthine oxidase inhibitory potentials. Antioxidant and xanthine oxidase inhibitory capacity evaluation of proanthocyanidin fractions with varying ADP showed that proanthocyanidins with lower molecular size were more effective as superoxide anion (ADP ≤ 4.2) and hydroxyl radical (ADP ≤ 5.9) scavengers and xanthine oxidase (ADP ≤ 3.1) inhibitors. ADP of the studied proanthocyanidin fractions did not show significant influence on their DPPH and ABTS radical scavenging and ferric reduction capacities.