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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

Anita Slavica, Antonija Trontel, Božidar Šantek, Srđan Novak Sustainable Production of D-/L-Lactic Acid by Lactic Acid Bacteria - Analysis and Optimization of the Bioprocess // European Biotechnology Congress 2013 ; Current Opinion in Biotechnology / Dundar, Munis ; Magni, Mariapia V. ; Juraj, Krajčovič (ur.). Bratislava: Elsevier, 2013. str. S26-S27

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

Indeksiranost