Sustainable Production of D-/L-Lactic Acid by Lactic Acid Bacteria - Analysis and Optimization of the Bioprocess (CROSBI ID 597503)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Anita Slavica, Antonija Trontel, Božidar Šantek, Srđan Novak
engleski
Sustainable Production of D-/L-Lactic Acid by Lactic Acid Bacteria - Analysis and Optimization of the Bioprocess
Efficient microbial conversion of carbohydrates from renewable feedstocks makes a sound basis for development of sustainable bioprocesses for biochemicals production. Utilization of the renewables shifts typically used submerged bioprocesses towards (semi-)solid state bioprocesses and it requires optimization and implementation of specific types of biocatalyst, bioreactor and analytical framework. Production of D-/L-lactic acid from several carbohydrates by three selected lactic acid bacteria strains was characterized in submerged and semi-solid state model systems. Different suspensions of starch (S0 = 100 g L- 1) and starch-containing feedstock (S0 = 60 and 100 g L-1) were used as media within the semi- solid state model systems in which the D-/L- lactic acid was produced through simultaneous saccharification and fermentation by the lactic acid bacterium strain that possess amylolytic and fermentative activity. Functioning of two different types of lab-scale bioreactors within the semi-solid state model systems was tested. Gravimetric, colorimetric and chromatographic analyses were adjusted in the analytical framework that was built for monitoring of the submerged and the semi-solid state bioprocess. High efficiency of the bioprocess for the D-/L- lactic acid production by the three strains was achieved. Availability of certain growth factors in starch-containing feedstock suspension in demineralized water limited amylolytic and fermentative activity of the bacterial strain and the efficiency of the semi-solid state bioprocess thereof.
renewable feedstock ; simultaneous saccharification and fermentation ; D-/L-lactic acid
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Podaci o prilogu
S26-S27.
2013.
objavljeno
Podaci o matičnoj publikaciji
European Biotechnology Congress 2013 ; Current Opinion in Biotechnology
Dundar, Munis ; Magni, Mariapia V. ; Juraj, Krajčovič
Bratislava: Elsevier
0958-3669
Podaci o skupu
European Biotechnology Congress 2013
pozvano predavanje
16.05.2013-18.05.2013
Bratislava, Slovačka
Povezanost rada
Biotehnologija