*2.1. Materials*

Wheat straw was provided by RISE Processum AB (Örnsköldsvik, Sweden). The wheat straw was previously collected by the Swedish University of Agricultural Sciences (SLU) from Mälardalen, Sweden, in the autumn of 2015. The moisture content of the biomass was determined using an HG63 moisture analyzer (Mettler-Toledo, Greifensee, Switzerland).
