Tytuł
A highly effective approach to cofactor regeneration and subsequent membrane separation of bioconversion products: Kinetic parameters and effect of process conditions
Autorzy
[ 1 ] Instytut Chemii Bioorganicznej Polskiej Akademii Nauk, Polska Akademia Nauk | [ P ] pracownik
Dyscyplina naukowa (Ustawa 2.0)
Rok publikacji
2020
Opublikowano w
Typ artykułu
artykuł naukowy
Język publikacji
angielski
Słowa kluczowe
Streszczenie
EN Bioconversion of monosaccharides is a process which can be used to obtain value-added compounds such as xylonic acid. In this study, we demonstrate enzymatic conversion of xylose with simultaneous cofactor regeneration using co-immobilized xylose dehydrogenase and alcohol dehydrogenase. The research is focused on the effect of process parameters, the buffer solutions used and inhibitors on the enzyme activity, as well as demonstrating the effective separation of substrates and products. In addition, kinetic parameters were determined and the Km and Vmax values after immobilization were found to be respectively 15–20% higher and 10% lower than the values for free proteins. Moreover, the highest NADH residual was recorded when TAPSO buffer was used, and it was shown that phenolic monomers do not significantly alter the bioconversion efficiency. Finally, the highest retention of xylonic acid, using membrane separation, was found to be about 90% at pH 9.
Strony (od-do)
100365
Punktacja Ministerstwa / czasopismo
20
Punktacja Ministerstwa / czasopismo w ewaluacji 2017-2021
20
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