中国科学B辑(英文版)
中國科學B輯(英文版)
중국과학B집(영문판)
SCIENCE IN CHINA(SCIENTIA SINICA)
2003年
2期
132-136
,共5页
赵亚平%王文锋%于文利%姚思德%钱素平%王大璞
趙亞平%王文鋒%于文利%姚思德%錢素平%王大璞
조아평%왕문봉%우문리%요사덕%전소평%왕대박
puerarin%nitrogen dioxide radicals%nitric oxide radicals%hydroxyl radicals%rate constant%pulse radiolysis
The free radical scavenging activities of puerarin towards nitrogen dioxide radicals , nitric oxide radicals (NO·) and hydroxyl radicals (OH·) were investigated by pulse radiolysis. Puerarin reacted with or NO·to form puerarin-4-O· with the absorption maximum at 340 nm, but reacted with OH·to form at least three transient species including puerarin-2-O·, puerarin-4-O· and [puerarin-OH]· with a broad absorption spectrum band (300-750 nm). In addition, the reaction rate constants of puerarin reacting with , NO·, and OH· were determined as 2.6×108, 1.7×108 and 3.9×109 L@mol·1@s·1, respectively.
