Effect of controlled aeration on glycerol production in a sulfite process by Saccharomyces cerevisiae

Journal Article · Thu Jan 01 00:00:00 EST 1987 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260290919· OSTI ID:6526433

Kalle, G P; Naik, S C

In a conventional sulfite process for glycerol production from sugarcane molasses using Saccharomyces cerevisiae, maximum product concentration of only 40 g/L and productivities only up to 5 g/L/day are obtained, making the process industrially unattractive. Fermentation carried out under controlled conditions of aeration improved product concentration in the medium by twofold (96 g/L) and productivity by threefold (16 g/L/day), while permitting the yeast to tolerate higher initial concentration of sugar (400-465 g/L). There was a concomittant increase in glycerol concentration and productivity with increasing aeration rate (0-1.4 vvm), whereas ethanol concentration in the medium dropped by ca. twofold. At aeration rates greater than 1.4 vvm, all these parameters showed a sharp decline, indicating general inhibition of fermentation.

• Research Organization: Hindustan Lever Research Centre, Bombay, India
• OSTI ID: 6526433
• Journal Information: Biotechnol. Bioeng.; (United States), Vol. 29:9
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
ETHANOL
YIELDS
GLYCEROL
SYNTHESIS
MOLASSES
FERMENTATION
AERATION
SACCHAROMYCES CEREVISIAE
SUGAR CANE
SULFITES
ALCOHOLS
BIOCONVERSION
FUNGI
GRASS
HYDROXY COMPOUNDS
MICROORGANISMS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PLANTS
SACCHAROMYCES
SULFUR COMPOUNDS
YEASTS
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