Process optimization for continuous ethanol fermentation by alginate-immobilized cells of Saccharomyces cerevisiae HAU-1

BS Yadav, U Rani, SS Dhamija, Poonam Singh - Nee Nigam, D Singh

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Continuous ethanol production by immobilized cells of Saccharomyces cerevisiae HAU-1 has been studied using synthetic and molasses based medium in column reactors. Immobilization of 30% yeast cells biomass (wet) in 1.5% calcium alginate gel resulted in the production of 20.8 g . 1(-1). h(-1) alcohol at a dilution rate of 0.36 h(-1) with approximately 1/3rd volume of the column reactor packed with pal beads. Optimum diameter of the beads was found to be 3.5 mm for efficient fermentation. The size of the column reactor (length to diameter ratio) also affected the productivity and fermentation efficiency due to gas hold-up and mass transfer effects. Molasses could also be fermented by this system but at a lower fermentation efficiency which could be improved, to some extent, by supplementation with nutrients.
LanguageEnglish
Pages205-210
JournalJOURNAL OF BASIC MICROBIOLOGY
Volume36
Issue number3
Publication statusPublished - 1996

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Immobilized Cells
Fermentation
Molasses
Saccharomyces cerevisiae
Ethanol
Immobilization
Biomass
Yeasts
Gases
Gels
Alcohols
Food
alginic acid

Cite this

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title = "Process optimization for continuous ethanol fermentation by alginate-immobilized cells of Saccharomyces cerevisiae HAU-1",
abstract = "Continuous ethanol production by immobilized cells of Saccharomyces cerevisiae HAU-1 has been studied using synthetic and molasses based medium in column reactors. Immobilization of 30{\%} yeast cells biomass (wet) in 1.5{\%} calcium alginate gel resulted in the production of 20.8 g . 1(-1). h(-1) alcohol at a dilution rate of 0.36 h(-1) with approximately 1/3rd volume of the column reactor packed with pal beads. Optimum diameter of the beads was found to be 3.5 mm for efficient fermentation. The size of the column reactor (length to diameter ratio) also affected the productivity and fermentation efficiency due to gas hold-up and mass transfer effects. Molasses could also be fermented by this system but at a lower fermentation efficiency which could be improved, to some extent, by supplementation with nutrients.",
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Process optimization for continuous ethanol fermentation by alginate-immobilized cells of Saccharomyces cerevisiae HAU-1. / Yadav, BS; Rani, U; Dhamija, SS; Singh - Nee Nigam, Poonam; Singh, D.

In: JOURNAL OF BASIC MICROBIOLOGY, Vol. 36, No. 3, 1996, p. 205-210.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Process optimization for continuous ethanol fermentation by alginate-immobilized cells of Saccharomyces cerevisiae HAU-1

AU - Yadav, BS

AU - Rani, U

AU - Dhamija, SS

AU - Singh - Nee Nigam, Poonam

AU - Singh, D

PY - 1996

Y1 - 1996

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AB - Continuous ethanol production by immobilized cells of Saccharomyces cerevisiae HAU-1 has been studied using synthetic and molasses based medium in column reactors. Immobilization of 30% yeast cells biomass (wet) in 1.5% calcium alginate gel resulted in the production of 20.8 g . 1(-1). h(-1) alcohol at a dilution rate of 0.36 h(-1) with approximately 1/3rd volume of the column reactor packed with pal beads. Optimum diameter of the beads was found to be 3.5 mm for efficient fermentation. The size of the column reactor (length to diameter ratio) also affected the productivity and fermentation efficiency due to gas hold-up and mass transfer effects. Molasses could also be fermented by this system but at a lower fermentation efficiency which could be improved, to some extent, by supplementation with nutrients.

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EP - 210

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T2 - Jounal of Basic Microbiology

JF - Jounal of Basic Microbiology

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