Fuel ethanol production from Jerusalem artichoke stalks using different yeasts

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Dev. Ind. Microbiol.; (United States)

OSTI ID:5351203

Margaritis, A; Bajpai, P; Bajpai, P K

The inulin-type sugars present in the stalks of Jerusalem artichoke (Helianthus tuberosus) were extracted with hot water and were used as a substrate to produce fuel EtOH. Seven different yeasts were used to obtain batch kinetic data. The medium consisted of stalk extract from Jerusalem artichoke containing 7.3% total sugars, supplemented with 0.01% oleic acid, 0.01% corn steep liquor, and 0.05% Tween 80. All batch fermentations were carried out in a 1-L bioreactor at 35 degrees and pH 4.6, and the following parameters were measured as a function of time: total sugars, EtOH and biomass concentration, maximum specific growth rate, and biomass and EtOH yields. The best EtOH producer was Kluyveromyces marxianus UCD (FST) 55-82 which gave an EtOH-to-sugar yield 97% of the theoretical maximum value, with almost 100% sugar utilization.

• Research Organization: Univ Western Ontario, London, ON Canada NGS 5B9 Faculty of Engineering Science
• OSTI ID: 5351203
• Journal Information: Dev. Ind. Microbiol.; (United States), Journal Name: Dev. Ind. Microbiol.; (United States) Vol. 24; ISSN DIMCA
• Country of Publication: United States
• Language: English

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ALCOHOLS
BATCH CULTURE
BIOCONVERSION
BIOSYNTHESIS
CARBOHYDRATES
ETHANOL
FERMENTATION
FUNGI
HYDROXY COMPOUNDS
INULIN
KINETICS
MICROORGANISMS
ORGANIC COMPOUNDS
PLANTS
POLYSACCHARIDES
REACTION KINETICS
SACCHARIDES
SYNTHESIS
TUBERS
YEASTS