采用比色滴定法评价氧化还原非活性生物相关金属离子的离子半径对黄酮类化合物清除自由基活性的影响。
Effects of ionic radius of redox-inactive bio-related metal ions on the radical-scavenging activity of flavonoids evaluated using photometric titration.
机构信息
Research Center for Charged Particle Therapy, National Institute of Radiological Sciences (NIRS), Inage-ku, Chiba 263-8555, Japan.
出版信息
Chem Commun (Camb). 2013 Oct 28;49(84):9842-4. doi: 10.1039/c3cc45124k.
PMID:24030811
Abstract
Mg(2+) enhanced the scavenging activity of (+)-catechin and quercetin against the 2,2-diphenyl-1-picrylhydrazyl radical (DPPH˙), while Al(3+) decreased their activity. Such effects of Mg(2+) and Al(3+) were not observed for kaempferol. Na(+) and Ca(2+) with large ionic radii showed little effect on the DPPH˙-scavenging activity of these three flavonoids.
摘要
镁（Mg 2+ ）增强了（+）-儿茶素和槲皮素对 2,2-二苯基-1-苦基肼自由基（DPPH˙）的清除活性，而铝（Al 3+ ）则降低了它们的活性。镁（Mg 2+ ）和铝（Al 3+ ）对山奈酚没有这种作用。具有较大离子半径的钠离子（Na + ）和钙离子（Ca 2+ ）对这三种类黄酮的 DPPH˙清除活性影响不大。
Zotero 插件