Production of ethanol by fermentation

Details Production of ethanol by fermentation Production of ethanol by fermentation

C - Chemistry, Metallurgy

12

C

44/12, 195/9

C12C 11/00 (2006.01) C10L 1/02 (2006.01) C12P 7/06 (2006.01)

Patent

CA 1158998

ABSTRACT OF THE DISCLOSURE The production of ethanol, particularly ethanol used as a fuel, optionally in conjunction with gasoline (petrol) may be produced from carbohydrate containing material, such as starch-containing material or sugar-containing material, by a solid phase fermentation process. The solid phase fermentation process comprises the steps of (a) crushing or pulping said carbohydrate-containing material to produce a pulp containing substantially no free liquid and comprising particles of said material having diameters of the range up to about 10 mm; (b) where necessary saccharifying and, if desired, heating said pulp to convert non-sugar carbohydrates in said material to sugars; (c) mixing a suspension of yeast with said pulp (simultaneously with or subsequent to said saccharification, if used) and maintaining said mixture under fermentation conditions to allow said yeast to convert sugars in said pulp to ethanol; and (d) extracting ethanol from said fermented pulp.

369611

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