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Original Articles

Generation of Reactive Oxygen Species from Hinokitiol under Near-UV Irradiation

, , , &
Pages 1996-1998 | Received 21 Feb 2003, Accepted 12 May 2003, Published online: 22 May 2014
 

Abstract

Near-UV irradiation caused the decomposition of hinokitiol in an aqueous solution. During the photochemical reaction, the distinct electron spin resonance signal characteristic of the adduct of 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) with the hydroxyl radical was accompanied by small signals corresponding to the adduct of DMPO with the superoxide anion radical. More than 95% of Escherichia coli cells were killed by the incubation with hinokitiol under near-UV irradiation by BLB fluorescent lamps. These results indicated the generation of reactive oxygen species during photochemical reaction of hinokitiol under near-UV irradiation.

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