Scavenging Effects of Lotus Germ Extraction on Superoxide Anion and Hydroxyl Radical

Abstract

Abstract: Int hisp aper, thes cavenginge ffectso fl otus germe xtractiono ns uperoxidea niona ndh ydroxylf reer adicalw ere studied with orthogonal test. The results showed that whether lotus germ water-extraction or ethanol-extraction having scavenging activities on superoxide anion and hydroxyl radical. Lotus germ water-extraction having higher scavenging effects on superoxide anion than on hydroxyl radical, but lotus germ ethanol-extraction having higher scavenging effects on hydroxyl radical than on superoxide anion. The final affirmed best conditions for water-extraction were extraction temperature 90℃,t he ratioo f sample/ solvent (water) 1:12, extraction time 0.5h. The final affirmed best conditions for ethanol-extraction were extraction time 6h, extraction temperature 60℃, and the ratio of sample/solvent (water) 1:14.

Key words: lotus germ, superoxide anion, hydroxyl radical, scavenging effects

ZHENG Tie-Song, ZHANG Min. Scavenging Effects of Lotus Germ Extraction on Superoxide Anion and Hydroxyl Radical[J]. FOOD SCIENCE, 2005, 26(8): 357-361.

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Scavenging Effects of Lotus Germ Extraction on Superoxide Anion and Hydroxyl Radical

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