The formation of β-Car•+ corresponding to the first term was
found to be a fast rising component and was almost independent of
the nature of catechin present. The rate constants and amplitudes
for the decay terms for the reaction between β-Car•+ and the
catechin anion depend on the nature of the catechin and on the
concentration of the catechin anion. In agreement with previous
kinetic analyses, the fast decay component will be considered as the
rate constant for the primary reaction between the catechin anion