Evaluation of radiation induced radicals in two glucose polymers
2007 Volume 42 Issue 1-2 Pages 4-8
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2007 Volume 42 Issue 1-2 Pages 4-8
Using electron spin resonance (ESR) spectroscopy, we revealed the radiation induced radicals in two glucose polymers, cellulose and starch. The representative ESR spectra of cellulose and starch are composed of a singlet signal due to organic free radical at g=2.0. Upon gamma ray irradiation, a singlet signal at g=2.0 increased. Furthermore, a new pair of signals was appeared. These new signals were found at the symmetric position of the singlet signal. The new pair peak was observed in cellulose, not in starch. We concluded that new pair of signals induced by irradiation is orignited from cellulose, not from starch.
