SERIES OF STUDIES OF VITAMIN-K BY PULSE-R ADIOLYSIS AND LASER PHOTOLYSIS (I) - A PULSE-RADIOLYSIS STUDIES OF THE REDUCTION REACTION OF VK3 IN AQUEOUS-SOLUTION

The formation mechanism and subsequent reaction of anion radical of VK 3 has been investigated using pulse radiolysis technique. It has been observed that the anion radical of VK3 with the maximum absorption pea k round 340 nm is different from that with the maximum absorption at 3 90 nm observed by others, the reasons of this difference has been init ially analysed. This paper also explores the protection action of VK3 to some bases of DNA, showing that VK3 itself is a good radiation prot ector.