Naslov
Mathematical modeling of maltose hydrolysis in different types of reactor

Autori
Findrik, Zvjezdana ; Vrsalović Presečki, Ana ; Vasić-Rački, Đurđa

Izvornik
Bioprocess and biosystems engineering (1615-7591) 33 (2010), 3; 299-307

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
enzyme kinetics ; Dextrozyme ; reactor ; biocatalysis ; operational stability

Sažetak
A commercial enzyme Dextrozyme was tested as catalyst for maltose hydrolysis at two different temperatures: 40 and 65 °C at pH 5.5. Its operational stability was studied in different reactor types: batch, repetitive batch, fed-batch and continuously operated enzyme membrane reactor. Dextrozyme was more active at 65 °C, but operational stability decay was observed during the prolonged use in reactor at this temperature. The reactor efficiencies were compared according to the volumetric productivity, biocatalyst productivity and enzyme consumption. The best reactor type according to the volumetric productivity for maltose hydrolysis is batch and the best reactor type according to the biocatalyst productivity and enzyme consumption is continuously operated enzyme membrane reactor. The mathematical model developed for the maltose hydrolysis in the different reactors was validated by the experiments at both temperatures. The Michaelis-Menten kinetics describing maltose hydrolysis was used.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Biotehnologija

POVEZANOST RADA