Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 116, Issue 32, Pages 9668-9675Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp304814r
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- UNAM
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A density functional theory (DFT) study on the free radical (OH center dot and OOH center dot) scavenging properties of some mono- and polysaccharides is presented. Two mechanisms, single electron transfer (SET) and hydrogen atom transfer (HAT), are considered. The former mechanism is studied by making use of the vertical ionization energy and vertical electron affinity of the radicals and carbohydrates. It is confirmed that the SET mechanism is not plausible to occur. With respect to the HAT, not only does the OH center dot radical react preferably with one hydrogen atom bonded to one carbon atom, but also the reaction with a hydrogen atom bonded to an oxygen is possible. Finally, it is suggested that the carbohydrates are not able to directly scavenge OOH center dot.
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