Key Role of Chemical Hardness to Compare 2,2-Diphenyl-1-picrylhydrazyl Radical Scavenging Power of Flavone and Flavonol O-Glycoside and C-Glycoside Derivatives

The antioxidant activities of flavonoids and their glycosides were measured with the 2,2-diphenyl-1-picrylhydrazyl radical (DPPH radical, DPPH·) scavenging method. The results show that free hydroxyl flavonoids are not necessarily more active than O-glycoside. Quercetin and kaempferol showed higher...

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Veröffentlicht in:	Chemical & pharmaceutical bulletin 2012/01/01, Vol.60(1), pp.37-44
Hauptverfasser:	Waki, Tsukasa, Nakanishi, Ikuo, Matsumoto, Ken-ichiro, Kitajima, Junichi, Chikuma, Toshiyuki, Kobayashi, Shigeki
Format:	Artikel
Sprache:	eng
Schlagworte:	2,2-diphenyl-1-picrylhydrazyl radical antioxidant activity Biphenyl Compounds - chemistry chemical hardness Flavones - chemistry flavonoid Flavonols - chemistry Free Radical Scavengers - chemistry glycoside Glycosides - chemistry Hydrogen Bonding Kaempferols - chemistry Picrates - chemistry Quercetin - chemistry
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