Pregled bibliografske jedinice broj: 178228
Modelling of the alcohol dehydrogenase production in baker's yeast
Modelling of the alcohol dehydrogenase production in baker's yeast // Proceedings of the 16th Internationl Congress of Chemical and Process Engineering : Full Texts on CD-ROM / Novosad, Jan (ur.).
Prag: Czech Society of Chemical Engineering (CSCHE), 2004. str. 1-10 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
Modelling of the alcohol dehydrogenase production in baker's yeast
Autori
Vrsalović Presečki, Ana ; Vasić-Rački, Đurđa
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of the 16th Internationl Congress of Chemical and Process Engineering : Full Texts on CD-ROM
/ Novosad, Jan - Prag : Czech Society of Chemical Engineering (CSCHE), 2004, 1-10
Skup
16th Internationl Congress of Chemical and Process Engineering
Mjesto i datum
Prag, Češka Republika, 22.08.2004. - 26.08.2004
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
baker's yeast; alcohol dehydrogenase; modelling
Sažetak
Baker's yeast was cultivated in batch bioreactor at different initial concentration of glucose and different oxygen feeding rate. Two baker's yeast cultivations with the initial glucose concentration of 30 g dm-3 and under micro-aerobic conditions (DO = 10 %) were carried out for the model development. The unstructured model was chosen for describing kinetic of baker's yeast growth and consumption of substrate. Growth associated production of ADH was observed. Model parameters were estimated using nonlinear regression by package program SCIENTIST. Comparing the results of simulation that were done by using does estimated parameters, and the experimental results, statistical model evaluation was done. Model is validated for different initial glucose concentrations under micro-aerobic (DO = 10 %) and aerobic conditions (DO = 40 %). By model validation is shown that mathematical model is valid for the cultivations under micro-aerobic conditions with the initial glucose concentration between 5 – 50 g dm-3. Under aerobic conditions proposed model is valid for describing biomass production, glucose consumption and change of ethanol concentration during the experiment. A lower volume activity of enzyme ADH in relation to the assigned biomass concentration, under aerobic conditions, was observed.
Izvorni jezik
Engleski
Znanstvena područja
Biotehnologija
