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Bioethanol Production from Corn Meal Hydrolyzates by Immobilized Saccharomyces cerevisiae var. ellipsoideus

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Authors
Mojović, Ljiljana
Nedović, Viktor
Rakin, Marica
Nikolić, Svetlana
Lević, Steva
Conference object (Published version)
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Abstract
Bioethanol can be produced by fermentation of sugars from waste agricultural materials. In this process immobilized yeast offer advantage over free cell suspension with regard to ethanol productivity, fermentation rate and product inhibition. The aim of the present study was to investigate the immobilization of Sacharomyces cerevisiae var. ellipsoideus yeast cells for bioethanol production from corn meal hydrolyzates. For this purpose the biocompatible polymers such as: PVA and Ca-alginate were assessed. The conditions of ethanol fermentation, such as inoculum concentration in different carriers, fermentation rate and the choice of a convenient carrier for the efficient ethanol production were studied, The maximum ethanol concentration of 10.05% (w/w) was obtained in the fermentation of corn meal hydrolyzates by 5% (v/v) inoculum concentration of the yeast immobilized in Ca-alginate using a method of electrostatic droplet generation. The repeated batch fermentation with the yeast immob...ilized in Ca-alginate at an initial sugar concentration of 176g/l, indicated that alginate gels degraded after the second fermentation cycle and 76 hours. In contrast, PVA carrier exhibited better mechanical properties and stability, however lower ethanol concentrations were achieved during the fermentation.

Keywords:
corn meal hydrolyzates / bioethanol / immobilization / Sacharomyces cerevisiae var. ellipsoideus
Source:
Proceedings - 2008 Joint Central European Congress: 4th Central European Congress on Food, CEFood 20, 2008, 2, 343-349
Publisher:
  • 2008 Joint Central European Congress of the 4th Central European Congress on Food, CEFood 2008 and 6th Croatian Congress of Food Technologists, Biotechnologists and Nutritionists

ISBN: 978-953620788-6

PubMed:

WoS: 000269184700045

Scopus: 2-s2.0-84924409390
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_technorep_1217
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1217
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
Institution/Community
Tehnološko-metalurški fakultet
TY  - CONF
AU  - Mojović, Ljiljana
AU  - Nedović, Viktor
AU  - Rakin, Marica
AU  - Nikolić, Svetlana
AU  - Lević, Steva
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1217
AB  - Bioethanol can be produced by fermentation of sugars from waste agricultural materials. In this process immobilized yeast offer advantage over free cell suspension with regard to ethanol productivity, fermentation rate and product inhibition. The aim of the present study was to investigate the immobilization of Sacharomyces cerevisiae var. ellipsoideus yeast cells for bioethanol production from corn meal hydrolyzates. For this purpose the biocompatible polymers such as: PVA and Ca-alginate were assessed. The conditions of ethanol fermentation, such as inoculum concentration in different carriers, fermentation rate and the choice of a convenient carrier for the efficient ethanol production were studied, The maximum ethanol concentration of 10.05% (w/w) was obtained in the fermentation of corn meal hydrolyzates by 5% (v/v) inoculum concentration of the yeast immobilized in Ca-alginate using a method of electrostatic droplet generation. The repeated batch fermentation with the yeast immobilized in Ca-alginate at an initial sugar concentration of 176g/l, indicated that alginate gels degraded after the second fermentation cycle and 76 hours. In contrast, PVA carrier exhibited better mechanical properties and stability, however lower ethanol concentrations were achieved during the fermentation.
PB  - 2008 Joint Central European Congress of the 4th Central European Congress on Food, CEFood 2008 and 6th Croatian Congress of Food Technologists, Biotechnologists and Nutritionists
C3  - Proceedings - 2008 Joint Central European Congress: 4th Central European Congress on Food, CEFood 20
T1  - Bioethanol Production from Corn Meal Hydrolyzates by Immobilized Saccharomyces cerevisiae var. ellipsoideus
EP  - 349
SP  - 343
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1217
ER  - 
@conference{
author = "Mojović, Ljiljana and Nedović, Viktor and Rakin, Marica and Nikolić, Svetlana and Lević, Steva",
year = "2008",
abstract = "Bioethanol can be produced by fermentation of sugars from waste agricultural materials. In this process immobilized yeast offer advantage over free cell suspension with regard to ethanol productivity, fermentation rate and product inhibition. The aim of the present study was to investigate the immobilization of Sacharomyces cerevisiae var. ellipsoideus yeast cells for bioethanol production from corn meal hydrolyzates. For this purpose the biocompatible polymers such as: PVA and Ca-alginate were assessed. The conditions of ethanol fermentation, such as inoculum concentration in different carriers, fermentation rate and the choice of a convenient carrier for the efficient ethanol production were studied, The maximum ethanol concentration of 10.05% (w/w) was obtained in the fermentation of corn meal hydrolyzates by 5% (v/v) inoculum concentration of the yeast immobilized in Ca-alginate using a method of electrostatic droplet generation. The repeated batch fermentation with the yeast immobilized in Ca-alginate at an initial sugar concentration of 176g/l, indicated that alginate gels degraded after the second fermentation cycle and 76 hours. In contrast, PVA carrier exhibited better mechanical properties and stability, however lower ethanol concentrations were achieved during the fermentation.",
publisher = "2008 Joint Central European Congress of the 4th Central European Congress on Food, CEFood 2008 and 6th Croatian Congress of Food Technologists, Biotechnologists and Nutritionists",
journal = "Proceedings - 2008 Joint Central European Congress: 4th Central European Congress on Food, CEFood 20",
title = "Bioethanol Production from Corn Meal Hydrolyzates by Immobilized Saccharomyces cerevisiae var. ellipsoideus",
pages = "349-343",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1217"
}
Mojović, L., Nedović, V., Rakin, M., Nikolić, S.,& Lević, S.. (2008). Bioethanol Production from Corn Meal Hydrolyzates by Immobilized Saccharomyces cerevisiae var. ellipsoideus. in Proceedings - 2008 Joint Central European Congress: 4th Central European Congress on Food, CEFood 20
2008 Joint Central European Congress of the 4th Central European Congress on Food, CEFood 2008 and 6th Croatian Congress of Food Technologists, Biotechnologists and Nutritionists., 2, 343-349.
https://hdl.handle.net/21.15107/rcub_technorep_1217
Mojović L, Nedović V, Rakin M, Nikolić S, Lević S. Bioethanol Production from Corn Meal Hydrolyzates by Immobilized Saccharomyces cerevisiae var. ellipsoideus. in Proceedings - 2008 Joint Central European Congress: 4th Central European Congress on Food, CEFood 20. 2008;2:343-349.
https://hdl.handle.net/21.15107/rcub_technorep_1217 .
Mojović, Ljiljana, Nedović, Viktor, Rakin, Marica, Nikolić, Svetlana, Lević, Steva, "Bioethanol Production from Corn Meal Hydrolyzates by Immobilized Saccharomyces cerevisiae var. ellipsoideus" in Proceedings - 2008 Joint Central European Congress: 4th Central European Congress on Food, CEFood 20, 2 (2008):343-349,
https://hdl.handle.net/21.15107/rcub_technorep_1217 .

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