Study of Cellulase and Macerating Enzyme Activity and Effect of Catechin on Cellulose

Abstract

Abstract Single-file diffusion (SFD) of CO, CO2, and {CH4} gas molecules confined in L-Ala-L-Val nanochannels as both pure and binary mixtures is investigated using pulsed field gradient (PFG) {NMR} at the high field of 17.6 T. A unique {SFD} mobility is observed for each of the sorbates as pure gases. As binary mixtures, both sorbates exhibit identical {SFD} mobilities. The mixture mobilities were observed to be larger than those of the slowest-diffusing component in its pure form under the conditions when the total concentration of sorbate molecules in the channels was the same or comparable. It is proposed that molecular clustering in the studied channels is responsible for the relationship experimentally observed between the one-component and mixture mobilities. It is demonstrated that molecular clustering can also explain the lack of the experimental observation of a transition from the {SFD} mechanism to the center-of-mass diffusion mechanism, viz. diffusion mechanism characterized by correlated movements of all molecules in any particular channel.