*2.3. Enzyme Preparations*

B151 and F10 preparations represent freeze-dried ultra-concentrated cultural filtrates of *Penicillium verruculosum* strains B151 (represents cellulase and xylanase complex) [24] and F10 (recombinant strain after the heterologous expression of *Aspergillus niger* β-glucosidase (cellobiase)) cultivated in 1l fermenters at the Institute of Biochemistry of RAS (Moscow, Russia) [25].

### *2.4. Analytical Procedures*
