FIELD: chemistry.
SUBSTANCE: invention relates to obtaining alcohol from lignocelluloses substrate. Method includes preliminary chemical alkaline processing of substrate, regulation of its pH, fermentative hydrolysis of the latter, alcohol brewing of hydrolysate, obtained by means of alcohol-distilling microorganism, separation/purification. In addition, method includes alkaline conversion of at least one liquid fraction, obtained at one of the previous stages, into furfural, and mixing obtained furfural with preliminarily processed substrate at pH regulation stage.
EFFECT: invention makes it possible to provide antibacterial protection of sugars at stage of fermentative hydrolysis.
10 cl, 2 dwg
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