Action of lotus leaf extract in scavenging free radicals as studied by electronspin resonance / 中草药

ABSTRACT

Object To study the action of lotus leaf extract (LLE) in scavengings hydroxyl and superoxide anion radical Methods By spin trapping with electron spin resonance Results 26 94 ug/mL LLE can scavenge 65 60% superoxide anion radical (O ? 2) produced by Hypoxanthine Xanthine oxidase system, while at concentrations over 8 98 mg/mL a complete eradication of hydroxyl radical (?OH) produced from Fenten reaction system was achieved Conclusion LLE is highly effective in scavenging ?OH and O ? 2 free radicals