FIELD: biotechnology.
SUBSTANCE: following is proposed: a nutrient medium for cultivating biomass of the mycelium of the fungus Piptoporus betulinus — a producer of milk-clotting enzyme, including lignocellulosic raw materials — birch sawdust, sunflower husks, calcium carbonate and calcium sulfate 2-aqueous, in the following ratio, wt.%: 60–80 of birch sawdust; 18.5–38.5 of sunflower husk; 1.2 of CaCO3; 0.3 of CaSO4×2H2O; with a relative humidity of 50–70%.
EFFECT: invention increases the milk-clotting activity of the aqueous extract of the enzyme and increases the rate of mycelium overgrowing the nutrient medium.
1 cl, 4 ex
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