Ethanol production from Jerusalem artichoke tubers (Helianthus tuberosus). Using Kluyveromyces marxcianus and Saccharomyces rosei

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260240414· OSTI ID:6748496

Margaritis, A; Bajpai, P

This article examines the potential of Jerusalem artichoke as a source for ethanol and single-cell protein SCP. In addition, experimental results are presented on batch fermentation kinetics employing two strains of Kluyveromyces marxianus and one strain of Saccharomyces rosei grown on the extract derived from the tubers of Jerusalem artichoke. Of the three cultures examined, Kluyveromyces marxianus UCD (FST) 55-82 was found to be the best producer of ethanol grown in a simple medium at 35 degrees C. The ethanol production was found to be growth-associated having a mu max = 0.41/h and the ethanol and biomass yields were determined to be Y p/s = 0.45 (88% of the theoretical) and Y x/s = 0.04 with 92% of the original sugars utilized. On the basis of carbohydrate yields of Jerusalem artichoke reported in the literature and these batch kinetic studies with Kluyveromyces marxianus, the calculated ethanol yields were found to range from 1400 kg ethanol/acre/yr to a maximum of 2700 kg ethanol/acre/yr. The SCP yields for Kluyveromyces marxianus were calculated to range between 130 to 250 kg dry wt cell/acre/yr. The potential for developing an integrated process to produce ethanol and SCP is also discussed. (Refs. 27).

• Research Organization: Dept of Chemical and Biochemical Engineering, Faculty of Engineering Science, The Univ of Western Ontario, London, Ontario, Canada N6A 5B9
• OSTI ID: 6748496
• Journal Information: Biotechnol. Bioeng.; (United States), Journal Name: Biotechnol. Bioeng.; (United States) Vol. 24:4; ISSN BIBIA
• Country of Publication: United States
• Language: English

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ALCOHOLS
BATCH CULTURE
BIOCONVERSION
CULTURE MEDIA
ETHANOL
FERMENTATION
FUNGI
GROWTH
HYDROXY COMPOUNDS
KINETICS
MICROORGANISMS
ORGANIC COMPOUNDS
PLANTS
PRODUCTION
SACCHAROMYCES
SINGLE CELL PROTEIN
TUBERS
YEASTS