Naslov
Modelling of the Production of Alcohol Dehydrogenase in the Fermentation of Saccharomyces cerevisiae

Autori
Husadžić, Bećir ; Vasić-Rački, Đurđa

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstract Book, Enzyme Reaction Engineering / - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 1997, P-3

Skup
Enzyme Reaction Engineering

Mjesto i datum
Supetar, Hrvatska, 02.10.1997. - 04.10.1997

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Alcohol dehydrogenase; Modelling of

Sažetak
The yeast alcohol dehydrogenase (ADH) can be found in several forms depending on conditions in the fermentation of yeast. The first form, the ADH-I can be obtained under aerobic or anaerobic conditions, but can partially be suppressed at higher concentration of substrate (minimum 10 %). The second form, the ADH-2 can be obtained under anaerobic conditions with moderate amounts of glucose or if ethanol is used as substrate instead of glucose. The batch growth of Saccharomyces cerevisiae was followed up in this paper, at the temperature 30 C and pH 5, with different initial concentrations of glucose and different oxygen supply, in order to maximize the activity of ADH and maximise consequently the amount of the ADH. To describe the production of the ADH, the model of Sonnleitner and Kappeli was used and extended with the functions describing the transformation functions were estimated by the non-linear regression analysis. The proposed mathematical model of the system was then used as a tool to maximize the production of ADH

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA