Phase interface
The mass transfer at the phase interface is important, in that it affects the concentrations of all components in both phases, thereby influencing all three enzymatic reactions. Experimental results show that the mass transfer rate of all components is significantly higher than the reaction rates of all three enzymes. Therefore, the assumption of instantaneous mass transfer seems reasonable: this leads to a concentration distribution between the two phases according to the partition coefficient for each component i as described according to equation (9).