Analytical modeling and numerical optimization of the biosurfactants production in solid-state fermentation by Aspergillus fumigatus
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Data
2014-03
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Resumo
This is an experimental, analytical and numerical study to optimize the biosurfactants
production in solid-state fermentation of a medium containing rice straw and minced rice bran inoculated
with Aspergillus fumigatus. The goal of this work was to analytically model the biosurfactants production in
solid-state fermentation into a column fixed bed bioreactor. The Least-Squares Method was used to adjust
the emulsification activity experimental values to a quadratic function semi-empirical model. Control
variables were nutritional conditions, the fermentation time and the aeration. The mathematical model is
validated against experimental results and then used to predict the maximum emulsification activity for
different nutritional conditions and aerations. Based on the semi-empirical model the maximum
emulsification activity with no additional hydrocarbon sources was 8.16 UE·g-1 for 112 h. When diesel oil
was used the predicted maximum emulsification activity was 8.10 UE·g-1 for 108 h.
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Aspergillus fumigatus, Biossurfactante, Fermentação em estado sólido, Biosurfactant, Solid-state fermentation
Citação
CASTIGLIONI,Gabriel Luis et al. Analytical modeling and numerical optimization of the biosurfactante production in solid-state fermentation by Aspergillus fumigatus. Acta Scientiarum. Technology, Maringá, v. 36, n.1, p. 61-67, Jan./Mar. 2014.