TY - GEN
T1 - Production of ethanol and xylitol by thermotolerant Kluyveromyces marxianus strains using xylose at 40 and 45°C
AU - Mueller, Michael
AU - Wilkins, Mark R.
AU - Banat, Ibrahim M.
PY - 2008
Y1 - 2008
N2 - Yeast used in simultaneous saccharification and fermentation (SSF) need to be found and that can ferment in at temperatures optimum for enzymatic hydrolysis (40-50°C). Thermotolerant Kluyveromyces marxianus 1MB strains have been found to be capable of growth up to 52°C and therefore are of interest for SSF. Xylose is a primary component of plant material and can be used for ethanol production. Also, xylitol can be produced from fermentation of xylose and can be used in food industry and shows anticariogenic effects. In this study, K. marxianus strains IMB1, IMB2, IMB3, IMB4, and IMB5 were used for fermentation of xylose at 40 and 45°C. Ethanol and xylitol yields for both temperatures are compared as well as the xylose consumption and growth characteristics. Ethanol production was greater at 40 than at 45 °C. IMB3 produced the most ethanol, 1.61 g/L at 40°C, and IMB2 produced the most xylitol, 7.84 g/L at 45°CI. Cell growth increased 107% at 40°C in comparison to 45°C.
AB - Yeast used in simultaneous saccharification and fermentation (SSF) need to be found and that can ferment in at temperatures optimum for enzymatic hydrolysis (40-50°C). Thermotolerant Kluyveromyces marxianus 1MB strains have been found to be capable of growth up to 52°C and therefore are of interest for SSF. Xylose is a primary component of plant material and can be used for ethanol production. Also, xylitol can be produced from fermentation of xylose and can be used in food industry and shows anticariogenic effects. In this study, K. marxianus strains IMB1, IMB2, IMB3, IMB4, and IMB5 were used for fermentation of xylose at 40 and 45°C. Ethanol and xylitol yields for both temperatures are compared as well as the xylose consumption and growth characteristics. Ethanol production was greater at 40 than at 45 °C. IMB3 produced the most ethanol, 1.61 g/L at 40°C, and IMB2 produced the most xylitol, 7.84 g/L at 45°CI. Cell growth increased 107% at 40°C in comparison to 45°C.
KW - Bioethanol
KW - Kluyveromyces marxianus
KW - Thermotolerant
KW - Xylitol
KW - Xylose
UR - https://www.scopus.com/pages/publications/63049113743
M3 - Conference contribution
AN - SCOPUS:63049113743
SN - 9781605605364
T3 - American Society of Agricultural and Biological Engineers Annual International Meeting 2008, ASABE 2008
SP - 2925
EP - 2935
BT - American Society of Agricultural and Biological Engineers Annual International Meeting 2008, ASABE 2008
T2 - American Society of Agricultural and Biological Engineers Annual International Meeting 2008
Y2 - 29 June 2008 through 2 July 2008
ER -