Protein biomass of the thermotolerant cellulolytic fungus Penicillium atrovenetum mixed with an insoluble substrate containing cellulose

摘要

The biosynthesis of protein biomass of the fungus Penicillium atrovenetum on substrates containing cellulose was studied. It was found that protein formation depends on the substrate and its content in the culture medium. The largest amount of protein biomass (16.4%) as a carbon source was produced by cultivating fungus on corn stalks ground to a particle size of 90 μm. Investigation of the fractional composition of P. atrovenetum protein biomass showed that 36.2% of it is formed in the water-soluble fraction during the exponential growth phase. The total amino-acid content was greatest in the albumin fraction (26.40%).