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《Chinese Journal of Applied Chemistry》 2002-04
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O_2~(·-) Scavenging Activity of Chitosan and Its Metal Complexes

YIN Xue Qiong a,b , LIN Qiang a , ZHANG Qi a * , YANG Li Chun a ( aDepartment of Chemical Engineering,Hainan University,Haikou 570228; bCollege of Land and Resources Management,Kunming University of Science and Tec  
The O ·- 2 scavenging activity of low molecular weight chitosan(LMC) and its complexes with Cu(Ⅱ), Co(Ⅱ), La(Ⅲ) was investigated. Colorimetric method was used, where V B2 and Met were used as producing reagent and NBT as detecting reagent for O ·- 2. The results showed that when mass concentration of samples was 0 5×10 -2 g/mL, the O ·- 2 scavenging activity of LMC and LMC Cu(Ⅱ), LMC Co(Ⅱ), LMC La(Ⅲ) were 80 3%, 98 9%, 84 1% and 78 4% respectively, but those of high molecular weight chitosan(820 kD) and D Glucosamine were only about 13% and 9 5%. The scavenging activity of LMC and its complexes decreased with decrease in their mass concentration .
【Fund】: 国家自然科学基金 (2 0 0 610 0 1);; 海南省首届高校优秀中青年教师教学与科研奖励基金资助项目
【CateGory Index】: O641.4
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