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. 2019 Feb 23;20(4):975. doi: 10.3390/ijms20040975

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Effects of Kae-based compounds on (a) α,α-diphenyl-β-picrylhydrazyl (DPPH) radical scavenging activity and (b) 2,2’-azino-bis (3-ethylbenzo-thiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging activity. L-Ascorbic acid (Vc) as standard radical scavenger. Water-soluble Kae-SO₃, Kae-SO₃-Ga and Vc were dissolved in phosphate buffered saline (PBS) solution, respectively, while others in ethanol. Data was expressed as means ± SD obtained in three independent experiments. Significant difference was found from Kae derivative groups and Vc group to the control (p < 0.05).