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UV irradiation-H2O2 system as an effective combined depolymerization technique to produce oligosaccharides from chitosan
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Seyed Ahmad Ayati Najafabadi, Hengameh Honarkar, Majid Moghadam, Valiollah Mirkhani, Mohammadreza Tahriri, Lobat Tayebi. UV irradiation-H2O2 system as an effective combined depolymerization technique to produce oligosaccharides from chitosan[J]. Journal of Zhejiang University Science D, 2018, 1(1): 62-68.
@article{title="UV irradiation-H2O2 system as an effective combined depolymerization technique to produce oligosaccharides from chitosan",
author="Seyed Ahmad Ayati Najafabadi, Hengameh Honarkar, Majid Moghadam, Valiollah Mirkhani, Mohammadreza Tahriri, Lobat Tayebi",
journal="Journal of Zhejiang University Science D",
volume="1",
number="1",
pages="62-68",
year="2018",
publisher="Zhejiang University Press & Springer",
doi="10.1007/s42242-018-0005-2"
}
%0 Journal Article
%T UV irradiation-H2O2 system as an effective combined depolymerization technique to produce oligosaccharides from chitosan
%A Seyed Ahmad Ayati Najafabadi
%A Hengameh Honarkar
%A Majid Moghadam
%A Valiollah Mirkhani
%A Mohammadreza Tahriri
%A Lobat Tayebi
%J Journal of Zhejiang University SCIENCE D
%V 1
%N 1
%P 62-68
%@ 1869-1951
%D 2018
%I Zhejiang University Press & Springer
%DOI 10.1007/s42242-018-0005-2
TY - JOUR
T1 - UV irradiation-H2O2 system as an effective combined depolymerization technique to produce oligosaccharides from chitosan
A1 - Seyed Ahmad Ayati Najafabadi
A1 - Hengameh Honarkar
A1 - Majid Moghadam
A1 - Valiollah Mirkhani
A1 - Mohammadreza Tahriri
A1 - Lobat Tayebi
J0 - Journal of Zhejiang University Science D
VL - 1
IS - 1
SP - 62
EP - 68
%@ 1869-1951
Y1 - 2018
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1007/s42242-018-0005-2
Abstract: UV irradiation hydrogen peroxide (H2O2) 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-β -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.
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