Tunneling effect in regeneration reaction of vitamin E by ubiquinol.

@article{Ouchi2010TunnelingEI,
  title={Tunneling effect in regeneration reaction of vitamin E by ubiquinol.},
  author={Aya Ouchi and Shin-Ichi Nagaoka and Kazuo Mukai},
  journal={The journal of physical chemistry. B},
  year={2010},
  volume={114 19},
  pages={
          6601-7
        }
}
A kinetic study of the regeneration reaction of vitamin E by ubiquinol was carried out by means of double-mixing stopped-flow spectroscopy. A substantial deuterium kinetic-isotope effect was observed on the second-order rate constant and the activation energy. In the regeneration reaction of alpha-tocopherol, deuteration of ubiquinol increased and decreased the activation energy and the second-order rate constant by 6.1 kJ/mol and a factor of 18.3, respectively. From this result, it is… CONTINUE READING