Homolytic Cleavage of the O-glycoside Bond in Carbohydrates： A Steady-state Radiolysis Study

The formation of products resulting from the O-glycoside bond cleavage following radiolysis of aqueous solutions of methyl-α-D-glucopyranoside (I), 3-O-methyl-α-D-glucopyranose (II), maltose, lactose, gentiobiose and cellobiose were studied. Radiation-induced destruction yields were also determined...

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Bibliographic Details
Published in:JOURNAL OF RADIATION RESEARCH 2005-09, Vol.46 (3), p.319-324
Main Authors: Edimecheva, I. P., Kisel, R. M., Shadyro, O. I., Kazem, K., Murase, H., Kagiya, T.
Format: Article
Language:English
Subjects:
Binding Sites - radiation effects
Carbohydrates - analysis
Carbohydrates - chemistry
Carbohydrates - radiation effects
Dextrans
Disaccharides
Dose-Response Relationship, Radiation
Glycosides - analysis
Glycosides - chemistry
Glycosides - radiation effects
Oxygen - analysis
Oxygen - chemistry
Oxygen - radiation effects
Pulse Radiolysis - methods
Radiation Dosage
Radiolysis
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Summary:The formation of products resulting from the O-glycoside bond cleavage following radiolysis of aqueous solutions of methyl-α-D-glucopyranoside (I), 3-O-methyl-α-D-glucopyranose (II), maltose, lactose, gentiobiose and cellobiose were studied. Radiation-induced destruction yields were also determined for dextran, laminarin and trimethylcelulose upon irradiation of their aqueous solutions. Oxygen, quinones and compounds capable of forming quinoid structures were found to inhibit radiation-induced homolytic destruction processes taking place in glycosides, di- and polysaccharides. The data obtained in this study enabled the authors to demonstrate an important role played by the fragmentation reaction of C-2 radicals which were generated from the starting substances in the formation of final radiolysis products.
ISSN:0449-3060
1349-9157
DOI:10.1269/jrr.46.319