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本文利用ＥＳＲ技术研究了心肌线粒体酶修饰下的脂质过氧化和脂类自由基，以及（－）－ＥＧＣＧ的抑制作用。结果表明：４－ＰＯＢＮ能捕集ｌｉｐｏｘｙｇｅｎｇｓｅ诱发心肌线粒体产生的自由基，得到６条线谱的脂类自由基和４条线谱捕集物，（－）－ＥＧＣＧ对该体系中使用的１ｉｐｏｘｙｅｎａｓｅ活性无影响，对所产生的自由基有明显的清除作用，并呈量效关系。对脂质过氧化的抑制作用，在本试验浓度范围内随浓度增加变化不大，最大抑制率约２０％。
In this study, lipid peroxidation and lipid free radicals modified by myocardial mitochondrial enzymes were studied by using ESR technique and the inhibitory effect of (-) - EGCG. The results showed that 4-POBN could capture lipoxygengse-induced free radicals produced by myocardial mitochondria, and six line spectra of lipid free radicals and four lineage traps, (-) - EGCG, were used for the 1ipoxyenase activity No effect on the free radicals produced by the clear removal effect, and the dose-effect relationship. The inhibition of lipid peroxidation, within the concentration range of this experiment with little change in concentration, the maximum inhibition rate of about 20%.