Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Patent
1980-05-22
1982-10-19
Naff, David M.
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
426 11, 435176, 435177, 435288, C12P 710, C12N 1114, C12N 1106, C12M 140
Patent
active
043551084
ABSTRACT:
Ethanol is produced from cellulosic material such as corn stover by treating the cellulosic material in a first hydrolysis stage with a dilute acid solution to hydrolyze pentosans to xylose, separating solids from the resultant hydrolysate, treating the solids in a second hydrolysis stage with a concentrated acid solution to hydrolyze hexosans to glucose, and fermenting the glucose to ethanol by passing a solution of the glucose over a fixed film of yeast prepared by attaching yeast with a polyfunctional agent to a proteinaceous material coated on a solid support. The use of a first hydrolysis stage avoids the production of furfural which is toxic and inhibits yeast fermentation. Xylose produced from the first stage may also be fermented to ethanol with the fixed film of yeast.
REFERENCES:
patent: 3210196 (1965-10-01), Corran et al.
patent: 3402103 (1968-09-01), Amberg et al.
patent: 4009286 (1977-02-01), Moll et al.
patent: 4127447 (1978-11-01), Griffith et al.
Griffith et al., A New Method for Coating Tomer Packing so as to Facilitate Microoganism Attachment Developmentation Industrial Microbiology, vol. 17, 1976, pp. 241-246.
Tsao, G. T., Cellulosic Material as a Renewable Resource, Process Biochemistry, 1978 (pp. 12-14).
Converse et al., Acid Hydrolysis of Cellulose in Refuse to Sugars and its Fermentation to Alcohol, Chemical Abstracts, vol. 79: 124663u, 1973, (p. 270).
Gaddy James L.
Sitton Oliver C.
Naff David M.
The Curators of the University of Missouri
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