Acta Phys. -Chim. Sin. ›› 1998, Vol. 14 ›› Issue (11): 1020-1024.doi: 10.3866/PKU.WHXB19981111

• ARTICLE • Previous Articles     Next Articles

One-electron Reduction Potentials of Tea Polyphenolic Compounds

Wang Chao-Cun, Ha Cheng-Yong, Yao Si-De   

  1. Guangzhou Institute of Chemistry,Chinese Academy of Sciences,Guangzhou 510650|Shanghai Institute of Atom Nuclear,Chinese Academy of Sciences,Shanghai 201800
  • Received:1998-01-04 Revised:1998-06-11 Published:1998-11-15
  • Contact: Wang Chao-Cun


One-electron reduction potentials could be use as the critical-criteria of charge transfer protect and sensitization. The One-electron reduction potentials of four Tea Polyphenol derivatives using duroquinone as the reference compound have been measured with the technique of pulse radiolysis, the one-electron reduction potentials of EGCG, GCG, GC, C are-316, -325, -328,-326mV, respectively. Acccording to the criteria of charge transfer of protection and sensitization, compared with one-electron reduction potential of thymine (-1100mV), EGCG, GCG, GC and C can be used to protect efficiently the target molecule thymine from the damage induced by electron addition.

Key words: One-elecutron reduction potential, Electron affinity, Radiation protection agent, Pulse radiolysis