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	The influence of the cation of quaternized chitosans on antioxidant activity
	Liu, Jingli1,2,3; Sun, Huili4; Dong, Fang1,2,3; Xue, Qinzhao1; Wang, Gang1; Qin, Song1; Guo, Zhanyong1
刊名	CARBOHYDRATE POLYMERS
	2009-10-15
卷号	78期号:3页码:439-443
关键词	Quaternized Chitosans Antioxidant Activity Group Electronegativity
ISSN号	0144-8617
DOI	10.1016/j.carbpol.2009.04.030
文献子类	Article
英文摘要	Various quaternized chitosans (QCSs) were synthesized according to previous method. Their reducing power and antioxidant potency against hydroxyl radicals ((center dot)OH) and hydrogen peroxide (H(2)O(2)) were explored by the established systems in vitro. The QCSs exhibited markedly antioxidant activity, especially TCEDMCS, whose IC(50) on hydroxyl radicals was 0.235 mg/mL. They showed 65-80% scavenging effect on hydrogen peroxide at a dose of 0.5 mg/mL. Generally, the antioxidant activity decreased in the order TCEDMCS > TBEDMCS > EDMCS > PDMCS > IBDMCS > Chitosan. Furthermore, the order of their (center dot)OH and H(2)O(2) scavenging activity was consistent with the electronegativity of different substituted groups in the QCSs. The QCSs showed much stronger antioxidant activity than that of chitosan may be due to the positive charge density of the nitrogen atoms in QCSs strengthened by the substituted groups. (C) 2009 Elsevier Ltd. All rights reserved.; Various quaternized chitosans (QCSs) were synthesized according to previous method. Their reducing power and antioxidant potency against hydroxyl radicals ((OH)-O-center dot) and hydrogen peroxide (H2O2) were explored by the established systems in vitro. The QCSs exhibited markedly antioxidant activity, especially TCEDMCS, whose IC50 on hydroxyl radicals was 0.235 mg/mL. They showed 65-80% scavenging effect on hydrogen peroxide at a dose of 0.5 mg/mL. Generally, the antioxidant activity decreased in the order TCEDMCS > TBEDMCS > EDMCS > PDMCS > IBDMCS > Chitosan. Furthermore, the order of their (OH)-O-center dot and H2O2 scavenging activity was consistent with the electronegativity of different substituted groups in the QCSs. The QCSs showed much stronger antioxidant activity than that of chitosan may be due to the positive charge density of the nitrogen atoms in QCSs strengthened by the substituted groups. (C) 2009 Elsevier Ltd. All rights reserved.
学科主题	Chemistry, Applied ; Chemistry, Organic ; Polymer Science
URL标识	查看原文
语种	英语
WOS记录号	WOS:000269991800010
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/2983]
专题	海洋研究所_实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev, Yantai 264003, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 4.Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jingli,Sun, Huili,Dong, Fang,et al. The influence of the cation of quaternized chitosans on antioxidant activity[J]. CARBOHYDRATE POLYMERS,2009,78(3):439-443.
APA	Liu, Jingli.,Sun, Huili.,Dong, Fang.,Xue, Qinzhao.,Wang, Gang.,...&Guo, Zhanyong.(2009).The influence of the cation of quaternized chitosans on antioxidant activity.CARBOHYDRATE POLYMERS,78(3),439-443.
MLA	Liu, Jingli,et al."The influence of the cation of quaternized chitosans on antioxidant activity".CARBOHYDRATE POLYMERS 78.3(2009):439-443.

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