High-efficiency ethanol production from lignocellulosic residues pretreated with alkaline H/sub 2/O/sub 2/

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260260613· OSTI ID:5688230

Gould, J M; Freer, S N

Pretreatment should be economic and should not utilize toxic reagents. In this study locally obtained residues were used - wheat straw, cornstalks, corn husks and kenaf -as substrates. The high efficiency of glucose production from alkaline H/sub 2/O/sub 2/ pretreated lignocellulosic residues made these materials excellent substrates for ethanol production by Saccharomyces cerevisiae in combined saccharification/fermentation experiments. Results showed that overall efficiency of ethanol formation was 90% for pretreated corn cobs, stalks and husks compared to 50% for untreated materials. Yields from kenaf and oak were also enhanced although below the theoretical maximum. The lignin containing supernatant does not appear to be inhibitory to Saccharomyces cerevisiae growth or ethanol production. The improvement in conversion efficiency is apparently the result of the removal of about one half of the lignin along with an apparent reduction in the degree of crystallinity within the cellulose structure itself. 16 references.

• Research Organization: Northern Regional Research Center, Peoria, IL
• OSTI ID: 5688230
• Journal Information: Biotechnol. Bioeng.; (United States), Journal Name: Biotechnol. Bioeng.; (United States) Vol. 26:6; ISSN BIBIA
• Country of Publication: United States
• Language: English

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AGRICULTURAL WASTES
ALCOHOLS
ALDEHYDES
ALKALINE HYDROLYSIS
BIOCONVERSION
BIOSYNTHESIS
CARBOHYDRATES
CELLULOSE
CEREALS
CHEMICAL REACTIONS
CRYSTALLIZATION
DECOMPOSITION
DELIGNIFICATION
ECONOMICS
ETHANOL
FERMENTATION
FUNGI
GLUCOSE
GRASS
HEXOSES
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROLYSIS
HYDROXY COMPOUNDS
JUTE
LIGNIN
LYSIS
MAIZE
MICROORGANISMS
MONOSACCHARIDES
OAKS
ORGANIC COMPOUNDS
ORGANIC WASTES
OXYGEN COMPOUNDS
PEROXIDES
PHASE TRANSFORMATIONS
PLANTS
POLYSACCHARIDES
RESIDUES
SACCHARIDES
SACCHARIFICATION
SACCHAROMYCES
SACCHAROMYCES CEREVISIAE
SOLVOLYSIS
STRAW
SUBSTRATES
SYNTHESIS
TOXICITY
TREES
WASTES
YEASTS