CELLULOLYTIC ACTIVITY OF STRAINS OF IRPEX LACTEUS (FR.) FR. DURING SOLID-STATE FERMENTATION ON WHEAT STRAW
The paper presents results of the research of cellulolytic activity of five strains of wood-destroying basidiomycete Irpex lacteus (Fr.) Fr., which were isolated from natural fruit bodies and stored in the Collection of cultures of the Department of Plant Physiology of Donetsk National University, and in the Collection of cultures of cap mushrooms of N.G. Kholodny Institute of Botany National Academy of Sciences of Ukraine under the numbers 1080, 1082, 1631, 1632 и 2434. During solid-state fermentation on a lignocellulosic substrate - wheat straw, the strains of I. lacteus showed different degrees of substrate decomposition - from 20 to 42.2 %, cellulolytic activity - from 0.23 to 12.01 U/mg and endoglucanase activity - from 15.2 to 648.56 U/mg. The most promising producers of enzymes of the cellulolytic complex are I. lacteus strains 1082, 1631, and 2434.