UV irradiation-H2O2 system as an effective combined depolymerization technique to produce oligosaccharides from chitosan

作     者：Seyed Ahmad Ayati Najafabadi Hengameh Honarkar Majid Moghadam Valiollah Mirkhani Mohammadreza Tahriri Lobat Tayebi 

作者机构：Biomaterials Group Faculty of Biomedical Engineering Amirkabir University of Technology Tehran Iran Polyurethane and Advanced polymers Faculty of Science Iran Polymer and Petrochemical Institute Tehran Iran Catalysis Divisions Department of Chemistry University of Isfahan Isfahan Iran Marquette University School of Dentistry Milwaukee WI 53233 USA Department of Engineering Science University of Oxford Oxford OX13PJ UK 

基　　金：The work was done in Department of Nutrition and Food Sciences at Isfahan University of Medical Sciences  Iran. We would like to especially thank Mr. Yahaii  for helping to prepare materials. This research did not receive any specific grant from funding agencies in the public  commercial or not-for-profit sectors 

出 版 物：《Bio-Design and Manufacturing》 (生物设计与制造（英文）)

年 卷 期：2018年第1卷第1期

页      码：62-68页

摘      要：UV irradiation hydrogen peroxide ( $$\hbox {H}_{2} \hbox {O}_{2}$$ ) system is used as an effective, easy and low-cost combined depolymerization technique to produce oligosaccharides from chitosan. UV–Vis spectroscopic studies explained that with increasing treatment time, the absorption of the depolymerized chitosan solution has increased, indicating the increase in the carbonyl and amino groups in their structure. Fourier transform infrared spectroscopy and nuclear magnetic resonance (1H NMR) analysis showed that the 1,4- $$\beta $$ -d-glucoside linkages of chitosan are degraded without important changes in chemical structure of decomposed samples. X-ray diffraction patterns verified the polymerization of chitosan to produce oligomers, changing in structure from crystalline to amorphous. Viscosity-average molecular weight measurements of fragmented chitosan samples and Mark–Houwink equation are used to demonstrate the efficiency of this depolymerization method. Finally, the obtained results ascertained that this combined method could produce water soluble chitosan with significant efficiency and no essential change in its chemical structure.

主 题 词：壳聚糖 低聚糖 生物材料 生物技术 

学科分类：081704[081704] 07[理学] 08[工学] 070305[070305] 0710[理学-生物科学类] 0831[工学-公安技术类] 0817[工学-轻工类] 0807[工学-电子信息类] 080501[080501] 0805[工学-能源动力学] 0802[工学-机械学] 0703[理学-化学类] 0836[0836] 0811[工学-水利类] 

核心收录：

D　O　I：10.1007/s42242-018-0005-2

馆 藏 号：203395070...