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Utilization of cellulosic materials through enzymatic hydrolysis. I. Fermentation of hydrolysate to ethanol and single‐cell protein
Author(s) -
Cysewski Gerald R.,
Wilke Charles R.
Publication year - 1976
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260180908
Subject(s) - hydrolysate , fermentation , cellulosic ethanol , enzymatic hydrolysis , chemistry , ethanol fuel , ethanol , hydrolysis , yeast , sugar , ethanol fermentation , food science , newsprint , biochemistry , cellulose
Ethanol fermentation studies were conducted with Saccharomyces cerevisiae ATCC #4126, to determine the optimal conditions of oxygen tension and feed sugar concentration. In long‐term continuous culture maximum ethanol production was found to occur at 0.07 mmHg oxygen tension and 10% glucose feed concentration. Preliminary process design and cost studies are developed for industrial scale fermentations to produce ethanol and torula yeast from sugars obtained by enzymatic hydrolysis of newsprint.