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采用化学发光法（ＣＬ）和顺磁共振法（ＥＳＲ）对比研究了茶多酚和槲皮素两种酚羟基化合物在吞噬细胞体系中清除超氧阴离子（Ｏ·２）、羟自由基（ＯＨ·）和单线态氧（１Ｏ２）等活性氧的能力，研究表明茶多酚和槲皮素在体外皆为非常有效的氧自由基清除剂，茶多酚的效果更好一些．ＣＬ法和ＥＳＲ法研究的结果具有一致性．
The chemiluminescence (CL) and paramagnetic resonance (ESR) methods were used to study the effects of two phenolic hydroxyl compounds of tea polyphenols and quercetin on the scavenging of superoxide anion (O · 2) and hydroxyl radical ) And singlet oxygen (1O2) and other reactive oxygen species, studies have shown that tea polyphenols and quercetin in vitro are very effective oxygen free radical scavenger, tea polyphenols better. The results of the CL and ESR studies are consistent.