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

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Yadav, BS, Rani, U, Dhamija, SS, Singh - Nee Nigam, Poonam and Singh, D (1996) Process optimization for continuous ethanol fermentation by alginate-immobilized cells of Saccharomyces cerevisiae HAU-1. JOURNAL OF BASIC MICROBIOLOGY, 36 (3). pp. 205-210. [Journal article]

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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.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Infection and Immunity/Microbiology
ID Code:5551
Deposited By:Dr Poonam Singh - Nee Nigam
Deposited On:21 Dec 2009 11:26
Last Modified:04 Aug 2011 09:48

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