Studies on immobilized Saccharomyces cerevisiae. I. Analysis of continuous rapid ethanol fermentation in immobilized cell reactor

Journal Article · Thu Apr 01 00:00:00 EST 1982 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260240403· OSTI ID:7150480

Tyagi, R D; Ghose, T K

Rapid fermentation of cane molasses into ethanol has been studied in batch, continuous (free-cell cell-immobilized systems) by a strain of Saccharomyces cerevisiae at temperature 30/sup 0/C and pH 5.0. The maximum productivity of ethanol obtained in immobilized system was 28.6 g L/sup -1/ h/sup -1/. The cells were immobilized by natural mode on a carrier of natural origin and retention of 0.132 g cells/g carrier was achieved. The immobilized-cell column was operated continuously at steady state over a period of 35 days. Based on the parameter data monitored from the system, mathematical analysis has been made and rate equations proposed, and the values of specific productivity of ehtanol and specific growth rate for immobilized cells computed. It has been established that immobilized cells exhibit higher specific rate of ethanol formation compared to free cells but the specific growth rate appears to be comparatively low. The yield of ethanol in the immobilized-cell system is also higher than in the free-cell system.

• Research Organization: Indian Inst. of Tech., New Delhi
• OSTI ID: 7150480
• Journal Information: Biotechnol. Bioeng.; (United States), Vol. 24:4
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
59 BASIC BIOLOGICAL SCIENCES
ETHANOL
PRODUCTIVITY
IMMOBILIZED CELLS
EVALUATION
FERMENTATION
MOLASSES
SACCHAROMYCES CEREVISIAE
ALCOHOLS
BIOCONVERSION
FUNGI
HYDROXY COMPOUNDS
MICROORGANISMS
ORGANIC COMPOUNDS
PLANTS
SACCHAROMYCES
YEASTS
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