title: Production of bio-ethanol from soybean molasses by Saccharomyces cerevisiae at laboratory, pilot and industrial scales.
abstract: The aim of this work was to develop an economical bioprocess to produce the bio-ethanol from soybean molasses at laboratory, pilot and industrial scales. A strain of Saccharomyces cerevisiae (LPB-SC) was selected and fermentation conditions were defined at the laboratory scale, which included the medium with soluble solids concentration of 30% (w/v), without pH adjustment or supplementation with the mineral sources. The kinetic parameters - ethanol productivity of 8.08g/Lh, YP/S 45.4%, YX/S 0.815%, m 0.27h(-1) and microX 0.0189h(-1) - were determined in a bench scale bioreactor. Ethanol production yields after the scale-up were satisfactory, with small decreases from 169.8L at the laboratory scale to 163.6 and 162.7L of absolute ethanol per ton of dry molasses, obtained at pilot and industrial scales, respectively.
authors.affiliation: Bioprocess Engineering and Biotechnology Division, Federal University of Paraná. P.O. Box 19 011, Curitiba, Brazil.
authors.forename: Paula F
authors.initials: PF
authors.lastname: Siqueira
authors.forename: Susan G
authors.initials: SG
authors.lastname: Karp
authors.forename: Júlio C
authors.initials: JC
authors.lastname: Carvalho
authors.forename: Wilerson
authors.initials: W
authors.lastname: Sturm
authors.forename: José A
authors.initials: JA
authors.lastname: Rodríguez-León
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Tholozan
authors.forename: Reeta Rani
authors.initials: RR
authors.lastname: Singhania
authors.forename: Ashok
authors.initials: A
authors.lastname: Pandey
authors.forename: Carlos R
authors.initials: CR
authors.lastname: Soccol
mesh_terms: D000934:Antifoaming Agents / Q000494:pharmacology; D018533:Biomass; D019149:Bioreactors; D002241:Carbohydrates; D003470:Culture Media; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation / Q000187:drug effects; D006863:Hydrogen-Ion Concentration; D007218:Industrial Microbiology; D007700:Kinetics; D007753:Laboratories; D008965:Molasses; D010865:Pilot Projects; D012441:Saccharomyces cerevisiae / Q000187:drug effects / Q000378:metabolism*; D012995:Solubility / Q000187:drug effects; D013025:Glycine max / Q000187:drug effects / Q000378:metabolism*
chemical_list: D000934:Antifoaming Agents; D002241:Carbohydrates; D003470:Culture Media; D000431:Ethanol