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2013 | OriginalPaper | Buchkapitel

32. Possibilities of Improving the Bioethanol Production from Cornmeal by Yeast Saccharomyces cerevisiae var. ellipsoideus

verfasst von : Svetlana Nikolić, Ljiljana Mojović, Aleksandra Djukić-Vuković

Erschienen in: Causes, Impacts and Solutions to Global Warming

Verlag: Springer New York

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Abstract

Bioethanol has become one of the most promising biofuels today. In Serbia, the most suitable and available raw materials are conventional starch-based energy crops such as corn and triticale. Bioethanol production by simultaneous saccharification and fermentation (SSF) process of cornmeal using free and immobilized cells of Saccharomyces cerevisiae var. ellipsoideus yeast, with and without media supplementation (mineral salts ZnSO4·7H2O and MgSO4·7H2O), in a batch system is studied. The ethanol concentration after 48 h of SSF is increased for 6.68 % by yeast immobilization compared to the free cell system, and a percentage of the theoretical ethanol yield of 86.66 % is achieved. Further improvement is accomplished with the addition of mineral salts which contributed to the highest increase in ethanol concentration by 15.86 % compared to the SSF process with free yeast and without yeast activators. In this case, ethanol concentration of 10.23 % (w/w), percentage of the theoretical ethanol yield of 94.11 %, and glucose consumption of 98.32 % are achieved after 48 h of the SSF process.

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Metadaten
Titel
Possibilities of Improving the Bioethanol Production from Cornmeal by Yeast Saccharomyces cerevisiae var. ellipsoideus
verfasst von
Svetlana Nikolić
Ljiljana Mojović
Aleksandra Djukić-Vuković
Copyright-Jahr
2013
Verlag
Springer New York
DOI
https://doi.org/10.1007/978-1-4614-7588-0_32