title: Continuous ethanol production from sugarcane molasses using a column reactor of immobilized Saccharomyces cerevisiae HAU-1.
abstract: A fermentation system for the continuous ethanol production from sucrose and molasses using calcium alginate immobilized Saccharomyces cerevisiae strain HAU-1 has been optimised. Immobilization of active yeast cells (30%, w/v) was accomplished in 1.5% calcium alginate and these yeast-beads were employed for ethanol production in a vertical column reactor. High ethanol productivity was achieved with a medium containing 10%, w/v sucrose at a dilution rate of 0.20 h-1. Alginate beads containing 30-50% yeast cell--mass resulted in high productivity 60.4 g l-1 h-1). Sugarcane molasses containing 15% total sugars was fermented in column reactor to produce 6.0%, v/v ethanol in continuous system. These yields could be improved to 7.0% with overall 11% increase in fermentation--efficiency with the use of acid-clarified sugar cane molasses medium.
authors.affiliation: Department of Microbiology, CCS Haryana Agricultural University, Hisar, India.
authors.forename: A
authors.initials: A
authors.lastname: Sheoran
authors.forename: B S
authors.initials: BS
authors.lastname: Yadav
authors.forename: P
authors.initials: P
authors.lastname: Nigam
authors.forename: D
authors.initials: D
authors.lastname: Singh
mesh_terms: D000464:Alginates; D018533:Biomass; D019149:Bioreactors; D018914:Cells, Immobilized; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D007218:Industrial Microbiology / Q000379:methods*; D008863:Microspheres; D008965:Molasses; D012441:Saccharomyces cerevisiae / Q000254:growth & development / Q000378:metabolism*; D013395:Sucrose / Q000378:metabolism*
chemical_list: D000464:Alginates; D006603:Hexuronic Acids; D000431:Ethanol; D013395:Sucrose; D020723:Glucuronic Acid