期刊
CARBOHYDRATE POLYMERS
卷 73, 期 1, 页码 173-177出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2007.10.021
关键词
quaternized carboxymethyl chitosan; synthesis; antioxidant activity
In order to determine the effect of the forms of the amido groups of chitosan on antioxidant activity, quaternized carboxymethyl chitosan (QCMC) derivatives were prepared with a degree of quaternization ranging from 34.3% to 59.5%. The antioxidant activity of QCMCs against hydroxyl radicals was assessed. The results indicated that QCMCs have better hydroxyl radicals scavenging activity than that of carboxymethyl chitosan, as a result of the positive charge of the quaternized chitosan. (C) 2007 Elsevier Ltd. All rights reserved.
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