Buettner G R, Sharma M K
ESR Center, College of Medicine, University of Iowa, Iowa City 52242.
Free Radic Res Commun. 1993;19 Suppl 1(0 1):S227-30. doi: 10.3109/10715769309056s227.
Some plastic syringes introduce a nitroxide free radical into the fluids they contain. The EPR spectrum shows a triplet with aN = 17.0 +/- 0.1 G in plasma. We report here that this nitroxide/hydroxylamine couple serves as an antioxidant system, whose redox potential appears to be between that of vitamin C and vitamin E. This adventitious antioxidant can alter the course of free radical processes.
一些塑料注射器会将一种氮氧化物自由基引入其所含的液体中。电子顺磁共振光谱显示，在血浆中存在一个三重态，其氮超精细分裂常数aN = 17.0 +/- 0.1高斯。我们在此报告，这种氮氧化物/羟胺对充当一种抗氧化系统，其氧化还原电位似乎介于维生素C和维生素E之间。这种偶然出现的抗氧化剂可以改变自由基过程的进程。
