FIELD: chemistry; biochemistry.
SUBSTANCE: invention relates to biotechnology and is meant for increasing efficiency of biotechnical production of ethanol from cellulose-containing material. The biocatalyst for producing ethanol from pentose is immobilised miscella of microfungus capable of fermenting pentose into ethanol, contained in a cryogel based on polyvinyl alcohol, with the following ratio of initial components in wt %: miscella of microfungus - 7.5-20.0, polyvinyl alcohol - 2.5-5.0 and water - up to 100. The biocatalyst can be reused to produce ethanol from pentose in periodic conditions.
EFFECT: biocatalyst is characterised by semi-inactivation period of up to 36 days, provides rate of conversion of pentose to ethanol of up to 0,34 g/l/h and output of the desired product of up to 50% from the deposited substrate.
1 dwg, 6 ex
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