There are close connection between the hydroxyl radical scavenging activity and flavonoids content or polyphenols content.
提取物中总黄酮和多酚类物质的含量与清除羟自由基能力有密切关系。
All degraded carboxymethyl chitosans show certain hydroxyl radical scavenging activity, but the antioxidant activity is stronger at lower molecular weight.
经降解得到的羧甲基壳聚糖均具有一定的羟基自由基清除活性，且分子量越小，其抗氧化性能越强。
About activity of scavenging hydroxyl free radical, distilled liquid by using methanol is observably higher than that getting by using ethanol or ddH20.
在清除羟自由基的活性上，类黄酮化合物甲醇提取液要明显的高于乙醇和水提取液的清除活性。
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