Radiation-induced electron paramagnetic resonance signal and soybean isoflavones content

Complete text of publication follows. The isoflavones fro soybean are known to have a number of beneficial health effects and can act as antioxidants. Electron Paramagnetic Resonance (EPR) is a well-known spectroscopic technique that can detect free radicals with high sensitivity. In food, free radicals can be generated by several commonly used industrial processes, such as irradiation of heat treatments. Upon gamma-ray irradiation, a new EPR signal was detectable in the vicinity of g = 2.0 region, ascribed to stable cellulose-derivative components and is a good indicator in the identification or irradiated plant samples. In this work the relation between EPR signals induce by gamma irradiation treatment and soybean isoflavones content and the EPR signal. Nevertheless, some isoflavone contents had a negative correlation with the radiation-induced EPR signal.