Ethanol production from Jerusalem artichoke tubers (Helianthus tuberosus) using Kluyveromyces marxianus 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:6813763

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 in the extract derived from the tubers of Jeusalem artichoke. Of the three cultures examined, Kluyveromyces marxianus UCD (EST) 55-82 was found to be the best producer of ethanol grown in a simple medium at 35/sup 0/C. The ethanol production was found to be growth-associated haveing a ..mu../sub max/ = 0.41 h/sup -1/ and the ethanol and biomass yields were determined to be Y/sub p///sub = 0.45 (88% of the theoretical) and Y/sub x///sub 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 K. marxianus, the calculated ethanol yields were found to range from 1400 kg ethanol acre/sup -1/ yr /sup -1/ to a maximum of 2700 kg ethanol acre/sup -1/ yr/sup -1/. The SCP yields for K. marxianus were calculated to range between 130 to 250 kg dry wt cell acre/sup -1/ yr/sup -1/. The potential for developing an integrated process to produce ethanol and SCP is also discussed.

• Research Organization: Univ. of Western Ontario, London, Canada
• OSTI ID: 6813763
• 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
BIOCHEMICAL REACTION KINETICS
BIOCONVERSION
BIOMASS
BIOSYNTHESIS
ENERGY SOURCES
ETHANOL
FERMENTATION
FUNGI
HYDROXY COMPOUNDS
KINETICS
MICROORGANISMS
ORGANIC COMPOUNDS
PLANTS
REACTION KINETICS
RENEWABLE ENERGY SOURCES
RESOURCE POTENTIAL
SACCHAROMYCES
SINGLE CELL PROTEIN
SUNFLOWERS
SYNTHESIS
TUBERS
YEASTS