Fuel ethanol from raw corn
Crude amylase preparations were produced by growing Aspergillus awamori and A. niger on raw ground whole corn. These Koji preparations were used to hydrolyze the starch of raw ground whole corn to sugars during simultaneous fermentation of the sugars to ethanol by distillers active dry yeast. Ethanol concentrations of the fermentation beers were determined with gas-chromatography. These fermentations yielded an average of 89.6% theoretical ethanol compared to control, conventional, fermentations that had an average of 89.8%. Carbon dioxide evolutions were determined with use of Alwood valves. Both the Koji and conventional fermentations produced an average of 0.48 gram of carbon dioxide per gram of dry substrate starch within 72 hours. However, initially the conventional fermentation rate was greater. Koji dehydrated at 41/sup 0/C had no apparent detrimental effects on theoretical ethanol yield.
- Research Organization:
- Department of Agricultural Engineering, University of Illinois, Urbana, IL
- OSTI ID:
- 5163499
- Report Number(s):
- CONF-8306126-
- Journal Information:
- ASAE Tech. Pap.; (United States), Vol. 83-3066; Conference: American Society of Agricultural Engineers summer meeting, Bozeman, MT, USA, 26 Jun 1983
- Country of Publication:
- United States
- Language:
- English
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Fuel ethanol from raw corn by Aspergilli hydrolysis with concurrent yeast fermentation
Amylolysis of raw corn by Aspergillus niger for simultaneous ethanol fermentation
Related Subjects
ETHANOL
PRODUCTION
MAIZE
FERMENTATION
AMYLASE
ASPERGILLUS
CARBON DIOXIDE
DEHYDRATION
GAS CHROMATOGRAPHY
HYDROLYSIS
MEDIUM TEMPERATURE
SACCHARIDES
STARCH
SUBSTRATES
SYNTHETIC FUELS
VALVES
YEASTS
YIELDS
ALCOHOLS
BIOCONVERSION
CARBOHYDRATES
CARBON COMPOUNDS
CARBON OXIDES
CEREALS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMATOGRAPHY
CONTROL EQUIPMENT
DECOMPOSITION
ENZYMES
EQUIPMENT
FLOW REGULATORS
FUELS
FUNGI
GLYCOSYL HYDROLASES
GRAMINEAE
GRASS
HYDROLASES
HYDROXY COMPOUNDS
LYSIS
MICROORGANISMS
O-GLYCOSYL HYDROLASES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLANTS
POLYSACCHARIDES
REAGENTS
SEPARATION PROCESSES
SOLVOLYSIS
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