ABSTRACT
The potentials of systems where biocatalysts are suspended in mixtures of substrates and water vapour are relatively unexplored in contrast to those where enzymes are placed directly in aqueous or non aqueous solvents. One of the major results of initial studies on such systems was to prove that biocatalysts, traditionally functioning in liquid systems, were able to bind and to transform molecules present in a gaseous phase, since there was only one example of an enzyme acting on gaseous substrates reported in the literature at that time.
