“…The maximum value possible for diffusion-limited quenching (dynamic mechanism) in water is 10 10 M À1 s À1 . When the bimolecular quenching constant is higher, a complex between protein and quencher is formed, corresponding to a static mechanism (Johansson, 1997;Rasoulzadeh, Jabary, Naseri, & Rashidi, 2009). The results obtained indicate that the mechanism by which these procyanidins fractions associate with a-amylase is of a static type involving a stable interaction between the two.…”