METHOD OF OBTAINING ORGANIC SOLVENTS FROM NONFOOD RENEWABLE NATURAL RAW MATERIAL Russian patent published in 2015 - IPC C12P7/10 C12P7/16 C12P7/28 C12N11/04 

FIELD: chemistry.

SUBSTANCE: invention relates to biotechnology. Method of obtaining complex of organic solvents, which includes acetone, butanol and ethanol, from renewable natural vegetable cellulose-containing raw material includes milling to particles with size 20-80 mcm. Preliminary saccharification of milled raw material is performed for 1-5 h at 45-55°C. The following simultaneous saccharification of carbohydrates and fermentation of obtained hydrolysates are carried out at 28-34°C for 45-50 h under impact of biocatalyst. Said biocatalyst represents cells of bacteria acetobutylicum B-4786, immobilised in cryogel of polyvinyl alcohol in form of cylindrical granules, which have diameter and height 3-5 mm.

EFFECT: method makes it possible to increase productivity of process to 0,464 g/l/h and the total concentration of organic solvents to 23,3 g/l.

4 cl, 9 ex