optimization of alcoholic fermentation using immobilized yeast cells in calcium alginate gel
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2015
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Abstract
Ethanol is an important industrial chemical with emerging potential as a
biofuel to replace fossil fuels. In order to enhance the efficiency and yield
of alcoholic fermentation, combined techniques such as cells immobilization
and media optimization have been used. The aim of this study was the
optimization of sodium alginate concentration and glucose and yeast extract
content in the media for ethanol production with immobilized cells of
Saccharomyces cerevisiae. Optimization of these parameters was attempted by
using a Box-Behnken design using the response surface methodology. The
obtained model predicts that the maximum ethanol content of 7.21% (v/v) is
produced when the optimal values of sodium alginate concentration and initial
content of glucose and yeast extract in the medium are 22.84 g/L, 196.42 g/L
and 3.77 g/L, respectively. To minimize the number of yeast cells "eluted"
from the alginate beads and residual glucose content in fermented media,
additional two sets of optimization were made. The obtained results can be
used for further techno-economic analyses of the process to select the
optimum conditions of the fermentation process for industrial
application.[Projekat Ministarstva nauke Republike Srbije, br. TR-31002]
| Reference Key |
j.2015actaoptimization
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|---|---|
| Authors | ;Đuran Jovana J.;Rončević Zorana Z.;Bajić Bojana Ž.;Dodić Siniša N.;Grahovac Jovana A.;Jokić Aleksandar I.;Dodić Jelena M. |
| Journal | chemical papers |
| Year | 2015 |
| DOI |
10.2298/APT1546207D
|
| URL | |
| Keywords |
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