Kinetic Modeling of Corn Fermentation with S. cerevisiae Using a Variable Temperature Strategy

dc.contributor.author Souza, Augusto
dc.contributor.author Mousaviraad, Mohammad
dc.contributor.author Mapoka, Kenneth
dc.contributor.author Rosentrater, Kurt
dc.contributor.author Rosentrater, Kurt
dc.contributor.department Food Science and Human Nutrition
dc.contributor.department Center for Crops Utilization Research
dc.contributor.department Agricultural and Biosystems Engineering
dc.contributor.department Environmental Science
dc.contributor.department Sustainable Agriculture
dc.contributor.department Center for Bioplastics and Biocomposites
dc.contributor.department Center for Crops Utilization Research
dc.date 2018-05-07T21:51:34.000
dc.date.accessioned 2020-06-29T22:43:47Z
dc.date.available 2020-06-29T22:43:47Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2018
dc.date.issued 2018-04-24
dc.description.abstract <p>While fermentation is usually done at a fixed temperature, in this study, the effect of having a controlled variable temperature was analyzed. A nonlinear system was used to model batch ethanol fermentation, using corn as substrate and the yeast Saccharomyces cerevisiae, at five different fixed and controlled variable temperatures. The lower temperatures presented higher ethanol yields but took a longer time to reach equilibrium. Higher temperatures had higher initial growth rates, but the decay of yeast cells was faster compared to the lower temperatures. However, in a controlled variable temperature model, the temperature decreased with time with the initial value of 40 ∘ C. When analyzing a time window of 60 h, the ethanol production increased 20% compared to the batch with the highest temperature; however, the yield was still 12% lower compared to the 20 ∘ C batch. When the 24 h’ simulation was analyzed, the controlled model had a higher ethanol concentration compared to both fixed temperature batches.</p>
dc.description.comments <p>This article is published as Souza, A. C. M., M. Mousaviraad, K. O. M. Mapoka, and K. A. Rosentrater. "Kinetic Modeling of Corn Fermentation with S. cerevisiae Using a Variable Temperature Strategy." <em>Bioengineering</em> 5, no. 2 (2018): 34. DOI: <a href="http://dx.doi.org/10.3390/bioengineering5020034" target="_blank">10.3390/bioengineering5020034</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/931/
dc.identifier.articleid 2214
dc.identifier.contextkey 12062005
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/931
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1748
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/931/2018_Rosentrater_KineticModeling.pdf|||Sat Jan 15 02:31:32 UTC 2022
dc.source.uri 10.3390/bioengineering5020034
dc.subject.disciplines Agriculture
dc.subject.disciplines Biological Engineering
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords fermentation
dc.subject.keywords Saccharomyces cerevisiae
dc.subject.keywords kinetic modeling
dc.title Kinetic Modeling of Corn Fermentation with S. cerevisiae Using a Variable Temperature Strategy
dc.type article
dc.type.genre article
dspace.entity.type Publication
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