METHOD OF OBTAINING ETHYL ALCOHOL AND PROTEIN PRODUCT FROM GRAIN RAW MATERIAL Russian patent published in 2015 - IPC C12P7/06 A23J1/12 

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining ethyl alcohol and protein product from grain raw material. Method includes milling grain raw material, its extrusion and fermentative hydrolysis in one extrusion-hydrolytic installation with supply of water and enzyme preparations, saccharification and alcoholic fermentation. Saccharified wort with content of soluble dry substances 33% is obtained in extrusion-hydrolytic installation with 1.5 h exposure at 58°C. Applied are: α-amilase 3 units/g of starch, BrewZyme BGX 0.5 unit KS/g of raw material, glucoamilase 12 units GlS/g, neutral protease 0.15 units PS/g of raw material. Obtained wort is separated into liquid and solid fractions in centrifugal field. Solid deposit is subjected to first washing with water with hydromodulus 1:1, centrifuged and washing sugar-containing waters are returned into clarified wort, diluting it to 21% DS in this way. After that acid protease in amount 0.25 units PS/g of raw material is added, exposed for 60 minutes at 55°C and directed to fermentation, with solid deposit being subjected to second washing with water with hydromidulus 1:1, after that, centrifuged with separation of purified protein. Washing sugar-containing waters are returned to extruder-hydrolyser for the following fermentative hydrolysis.

EFFECT: method makes it possible to reduce loss of grain raw material in realisation of the process.

1 dwg, 1 ex