Free radical scavenging activity of chitooligosaccharides by electron spin resonance spectrometry

被引:144
作者
Park, PJ [1 ]
Je, JY [1 ]
Kim, SK [1 ]
机构
[1] Pukyong Natl Univ, Dept Chem, Pusan 608737, South Korea
关键词
chitooligosaccharides; electron spin resonance; free radical; radical scavenging activity;
D O I
10.1021/jf034039+
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
The radical scavenging effects of chitooligosaccharides (COSs) on hydroxyl radical, superoxide radical, alkyl radical, and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical were investigated using a spin-trapping electron spin resonance (ESR) method and compared with the ESR signal intensity. COSs exhibited strong scavenging activity on hydroxyl radical and superoxide radical and weak scavenging activity on alkyl radical and DPPH radical. The radical scavenging activity of COSs increased with increment of concentration, and it was also dependent on molecular weight. These results suggest that the scavenging activity of COSs is dependent on their molecular weights and tested radicals.
引用
收藏
页码:4624 / 4627
页数:4
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