| 光谱学与光谱分析 |
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| Formation of Cu(Ⅱ) with Chitosan and the Study of GFC Spectra Study on the Molecular Weight Distribution of Oligosaccharides by Oxidizing Degradation |
| CHEN Yi-ping1, HAO Hong-yuan1, ZHANG Qi1, 2*, GE Qing-kai1, WANG Ping-hong1 |
1. Hainan Provincial Key Lab of Fine Chemicals, Hainan University, Hainan 570228, China
2. State Key Lab of Applied Organic Chemistry Lanzhou University, Lanzhou 730030, China |
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Abstract Complexes of chitosan with Cu(Ⅱ) were prepared by adding Cu(OAc)2·H2O to chitosan solution. IR, UV, elemental analysis, and thermal weight analysis were used to characterize the complex. The results showed that there were coordinate bands formed. H2O2 was used to degrade chitosan-Cu(Ⅱ) complex, and the molecular distribution of degraded products was investigated. The result suggested that the chitosan could be degraded rapidly, the degradation started from higher molecular weight range, and the molecular weight distribution of oligosaccharides was much more narrow than that of degraded products with usual methods, such as hydrolysis acidic and oxidizing conditions. The index of molecular weight distribution changed with the average degradability. When exceeding 10 oligosaccharides, the smaller the DP, the smaller the index.
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Received: 2004-09-16
Accepted: 2004-12-18
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Corresponding Authors:
ZHANG Qi
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| Cite this article: |
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CHEN Yi-ping,HAO Hong-yuan,ZHANG Qi, et al. Formation of Cu(Ⅱ) with Chitosan and the Study of GFC Spectra Study on the Molecular Weight Distribution of Oligosaccharides by Oxidizing Degradation [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(06): 992-995.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2005/V25/I06/992 |
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