The promotion of molasse alcoholic fermentation using Saccharomyces cerevisiae in the presence of gamma-alumina.
Using gamma-alumina pellets, more than threefold increase of the ethanol productivity in the fermentation molasse has been obtained in the present work. Also, molasse fermentation in the presence of gamma-alumina gave 78.4 g/L ethanol, ethanol yield factor 0.44 g/g, and conversion 89.4% at initial sugar concentration (ISC) 179.5 g/L, compared to 53.9 g/L, 0.30 g/g and 62.7% in its absence, respectively. Furthermore, it was found that gamma-alumina reduces the activation energy Ea of fermentation. This inorganic material does not promote the fermentation of raisin extract.
Iconomou
L
L
Department of Chemistry, University of Patras, Greece.
Psarianos
C
C
Kanellaki
M
M
Kalliafas
A
A
Kana
K
K
Koutinas
A A
AA
D000537:Aluminum Oxide / Q000494:pharmacology; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D005632:Fructose / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008965:Molasses; D012441:Saccharomyces cerevisiae / Q000378:metabolism*; D013395:Sucrose / Q000378:metabolism; D013696:Temperature
D005632:Fructose; D000431:Ethanol; D013395:Sucrose; D000537:Aluminum Oxide