Evaluation of Non-Saccharomyces Cerevisiae Strains Isolated from Sea Water Against Inhibitory Compounds for Ethanol Production
Abstract: An important
parameter in industrial bioethanol fermentation is the resistance of yeast to
osmotic pressure and inhibitor compounds. Aureobasidium pullulans LBF-3-0074
and Schwanniomyces etchellsii LBF-3-0034 are reported capable to produce
ethanol. LBF-3-0034 and LBF-3-0074 are yeast strains isolated from Bali and
Lombok sea water. This study aimed to evaluate characteristics of both
LBF-3-0034 and LBF-3-0074 strains under the effects of glucose and inhibitor
compounds. Both strains were allowed to consume glucose up to 120 mM. Then,
these strains were grown with the present of several inhibitors, i.e.
5-hydroxymethyl-2-furaldehyde (5-HMF), furfural, acetic acid, formic acid, and
levulinic acid. Results showed that the two yeast strains studied could grow
and ferment the sugars under both osmotic and inhibitor stress conditions. As
conclusion, Schwanniomyces etchellsii LBF-3-0034 and Aureobasidium pullulans
LBF-3-0074 are potential for direct fermentation of lignocellulosic hydrolysate
to ethanol.
Keywords: bioethanol,
inhibitors, marine, osmotic, yeast
Author: Ahmad Thontowi,
Filemon Jalu Nusantara Putra, Yopi
Journal Code: jpperikanangg170006
