High density process to cultivate Lactobacillus plantarum biomass using wheat stillage and sugar beet molasses
Małgorzata Krzywonos*1 · Thomas Eberhard2
Bioprocess Engineering, Wrocław University of Economics, Poland
*Corresponding author: firstname.lastname@example.org
Financial support: This work was financed by the Foundation for Strategic Research (MISTRA) programme for Domestication of micro-organisms (DOM). We thank Su-Lin Leong for critical reading of the manuscript.
Keywords: distillery wastewater, high density fermentation, lactic acid bacteria, Lactobacillus plantarum, sugar beet molasses, wheat stillage.
Background: Owing to the growing interest in
biofuels, the concept of a biorefinery where biomass is converted to a variety
of useful products is gaining ground. We here present how distillery waste is
combined with a by-product from a sugar production, molasses, to form a medium
for the growth of Lactobacillus plantarum with yields and biomass
densities comparable with conventional industrial media. Such approach enables
a cost-effective utilization of the problematic wastewater from ethanol and a
by-product from sugar production. It is the first approach that attempts to
find low-cost media for the production of Lactobacillus plantarum biomass.