Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1387410 | Carbohydrate Polymers | 2008 | 9 Pages |
Abstract
A novel derivative of chitosan, chitosan–gallic acid (chitosan–GA), obtained from a simple conjugating condition with gallic acid using carbodiimide is proposed. The conjugation with gallic acid brings the water-solubility or water swelling property to chitosan. The studies on the free radical scavenging of chitosan–GA clarify its significant antioxidant activity on free radicals, i.e. carbon-centered radicals and hydroxyl radicals. Chitosan–GA clearly shows a synergistic antioxidant activity on hydroxyl radical scavenging where iron metals were involved. The work demonstrates how chitosan–GA can be a potential natural-compound-based antioxidant.
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Authors
Wanvimol Pasanphan, Suwabun Chirachanchai,