Studies of Antioxidation Activity of Natural Products with EPR Methods
基于EPR方法的天然产物抗氧化性能研究

Many of EPR(electron paramagnetic resonance) experimental methods can be used in studies of antioxidation activities of natural products, such as spin trapping EPR, cryogenic EPR for modeled animals and spin labeling EPR et al. It is an elementary requirement for an antioxidant to scavenge oxygen free radicals in vitro, but evaluating method in vivo is more valuable when the antioxidant is applied to a biological system. Through the studies of more than 200 herbages and some TCM recipes, the EPR screening methods for natural products as antioxidants have been established and described in detail. With the above EPR methods, it is believed that antioxidation activities of natural products can be obtained at molecular, cell, and tissue levels, respectively.