Most of the current studies in the field of biofuel production
are focused on the search for hydrolytic consortia, which,
by the degradation of lignocellulosic biomass, increase the
efficiency of anaerobic digestion, and thus the process of
methane fermentation. Moreover, the applicable microorganisms
should be: (i) stable, (ii) relatively cheap (iii) universal (with a
broad spectrum of activity) and (iv) resistant to the changing
environmental conditions. It is, however, difficult to fulfill all the
above requirements.