Continuous ethanol production by thermotolerant Kluyveromyces marxianus IMB3 immobilized on mineral Kissiris at 45 degrees C

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Abstract

Thermotolerant Kluyveromyces marxianus var. marxianus IMB3 yeast strain was immobilized on Kissiris (mineral glass foam derived from lava) in column packed reactors, and used for ethanol production from glucose or molasses under continuous culture conditions at temperatures between 40 and 50 degrees C, Both ethanol yield and fermentation efficiency were highest at 45 degrees C and a dilution rate (D) of 0.15/h. Increasing sugar concentration led to an increase in ethanol yield of up to 68.6 and 55.9 g/l on approx. 200 g glucose or molasses, respectively Optimum fermentation efficiency (experimental yields over theoretical maximum yields) however was at about 15% sugar for both glucose and molasses. Slight aeration (25 ml of air/min) through the medium addition line was found advantageous due to its mixing effect and probable maintenance of activity.
LanguageEnglish
Pages283-288
JournalWorld Journal of Microbiology and Biotechnology
Volume13
Issue number3
Publication statusPublished - May 1997

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Kluyveromyces marxianus
ethanol production
molasses
minerals
glucose
lava
ethanol
fermentation
sugars
foams
aeration
glass
yeasts
air
temperature

Cite this

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title = "Continuous ethanol production by thermotolerant Kluyveromyces marxianus IMB3 immobilized on mineral Kissiris at 45 degrees C",
abstract = "Thermotolerant Kluyveromyces marxianus var. marxianus IMB3 yeast strain was immobilized on Kissiris (mineral glass foam derived from lava) in column packed reactors, and used for ethanol production from glucose or molasses under continuous culture conditions at temperatures between 40 and 50 degrees C, Both ethanol yield and fermentation efficiency were highest at 45 degrees C and a dilution rate (D) of 0.15/h. Increasing sugar concentration led to an increase in ethanol yield of up to 68.6 and 55.9 g/l on approx. 200 g glucose or molasses, respectively Optimum fermentation efficiency (experimental yields over theoretical maximum yields) however was at about 15{\%} sugar for both glucose and molasses. Slight aeration (25 ml of air/min) through the medium addition line was found advantageous due to its mixing effect and probable maintenance of activity.",
author = "{Singh - Nee Nigam}, Poonam and IM Banat and D Singh and AP McHale and R Marchant",
year = "1997",
month = "5",
language = "English",
volume = "13",
pages = "283--288",
journal = "World Journal of Microbiology and Biotechnology",
issn = "0959-3993",
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T1 - Continuous ethanol production by thermotolerant Kluyveromyces marxianus IMB3 immobilized on mineral Kissiris at 45 degrees C

AU - Singh - Nee Nigam, Poonam

AU - Banat, IM

AU - Singh, D

AU - McHale, AP

AU - Marchant, R

PY - 1997/5

Y1 - 1997/5

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AB - Thermotolerant Kluyveromyces marxianus var. marxianus IMB3 yeast strain was immobilized on Kissiris (mineral glass foam derived from lava) in column packed reactors, and used for ethanol production from glucose or molasses under continuous culture conditions at temperatures between 40 and 50 degrees C, Both ethanol yield and fermentation efficiency were highest at 45 degrees C and a dilution rate (D) of 0.15/h. Increasing sugar concentration led to an increase in ethanol yield of up to 68.6 and 55.9 g/l on approx. 200 g glucose or molasses, respectively Optimum fermentation efficiency (experimental yields over theoretical maximum yields) however was at about 15% sugar for both glucose and molasses. Slight aeration (25 ml of air/min) through the medium addition line was found advantageous due to its mixing effect and probable maintenance of activity.

M3 - Article

VL - 13

SP - 283

EP - 288

JO - World Journal of Microbiology and Biotechnology

T2 - World Journal of Microbiology and Biotechnology

JF - World Journal of Microbiology and Biotechnology

SN - 0959-3993

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