Ultrasound-assisted production of bioethanol by simultaneous saccharification and fermentation of corn meal
Само за регистроване кориснике
2010
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
An ultrasound-assisted liquefaction as a pretreatment for bioethanol production by simultaneous saccharification and fermentation (SSF) of corn meal using Saccharomyces cerevisiae var. ellipsoideus yeast in a batch system was studied. Ultrasound pretreatment (at a frequency of 40 kHz) was performed at different sonication times and temperatures, before addition of liquefying enzyme. An optimal duration of the treatment of 5 min and sonication temperature of 60 degrees C were selected, taking into account glucose concentration after the liquefaction step. Under the optimum conditions an increase of glucose concentration of 6.82% over untreated control sample was achieved. Furthermore, the SSF process kinetics was assessed and determined, and the effect of ultrasound pretreatment on an increase of ethanol productivity was investigated. The obtained results indicated that the ultrasound pretreatment could increase the ethanol concentration by 11.15% (compared to the control sample) as wel...l as other significant process parameters. In this case, the maximum ethanol concentration of 9.67% w/w (which corresponded to percentage of the theoretical ethanol yield of 88.96%) was achieved after 32 h of the SSF process. A comparison of scanning electron micrographs of the ultrasound-pretreated and untreated samples of corn meal suspensions showed that the ultrasound stimulated degradation of starch granules and release of glucose, and thereby accelerated the starch hydrolysis due to the cavitation and acoustic streaming caused by the ultrasonic action.
Кључне речи:
Bioethanol / Ultrasound pretreatment / Simultaneous saccharification and fermentation / Saccharomyces cerevisiae var. ellipsoideus / Corn mealИзвор:
Food Chemistry, 2010, 122, 1, 216-222Издавач:
- Elsevier Sci Ltd, Oxford
Финансирање / пројекти:
- Повећање ефикасности производња биоетанола на обновљивим сировинама потпуним искоришћавањем споредних производа (RS-MESTD-MPN2006-2010-18002)
DOI: 10.1016/j.foodchem.2010.02.063
ISSN: 0308-8146
WoS: 000277702200032
Scopus: 2-s2.0-77950606860
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Nikolić, Svetlana AU - Mojović, Ljiljana AU - Rakin, Marica AU - Pejin, Dušanka AU - Pejin, Jelena PY - 2010 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1698 AB - An ultrasound-assisted liquefaction as a pretreatment for bioethanol production by simultaneous saccharification and fermentation (SSF) of corn meal using Saccharomyces cerevisiae var. ellipsoideus yeast in a batch system was studied. Ultrasound pretreatment (at a frequency of 40 kHz) was performed at different sonication times and temperatures, before addition of liquefying enzyme. An optimal duration of the treatment of 5 min and sonication temperature of 60 degrees C were selected, taking into account glucose concentration after the liquefaction step. Under the optimum conditions an increase of glucose concentration of 6.82% over untreated control sample was achieved. Furthermore, the SSF process kinetics was assessed and determined, and the effect of ultrasound pretreatment on an increase of ethanol productivity was investigated. The obtained results indicated that the ultrasound pretreatment could increase the ethanol concentration by 11.15% (compared to the control sample) as well as other significant process parameters. In this case, the maximum ethanol concentration of 9.67% w/w (which corresponded to percentage of the theoretical ethanol yield of 88.96%) was achieved after 32 h of the SSF process. A comparison of scanning electron micrographs of the ultrasound-pretreated and untreated samples of corn meal suspensions showed that the ultrasound stimulated degradation of starch granules and release of glucose, and thereby accelerated the starch hydrolysis due to the cavitation and acoustic streaming caused by the ultrasonic action. PB - Elsevier Sci Ltd, Oxford T2 - Food Chemistry T1 - Ultrasound-assisted production of bioethanol by simultaneous saccharification and fermentation of corn meal EP - 222 IS - 1 SP - 216 VL - 122 DO - 10.1016/j.foodchem.2010.02.063 ER -
@article{ author = "Nikolić, Svetlana and Mojović, Ljiljana and Rakin, Marica and Pejin, Dušanka and Pejin, Jelena", year = "2010", abstract = "An ultrasound-assisted liquefaction as a pretreatment for bioethanol production by simultaneous saccharification and fermentation (SSF) of corn meal using Saccharomyces cerevisiae var. ellipsoideus yeast in a batch system was studied. Ultrasound pretreatment (at a frequency of 40 kHz) was performed at different sonication times and temperatures, before addition of liquefying enzyme. An optimal duration of the treatment of 5 min and sonication temperature of 60 degrees C were selected, taking into account glucose concentration after the liquefaction step. Under the optimum conditions an increase of glucose concentration of 6.82% over untreated control sample was achieved. Furthermore, the SSF process kinetics was assessed and determined, and the effect of ultrasound pretreatment on an increase of ethanol productivity was investigated. The obtained results indicated that the ultrasound pretreatment could increase the ethanol concentration by 11.15% (compared to the control sample) as well as other significant process parameters. In this case, the maximum ethanol concentration of 9.67% w/w (which corresponded to percentage of the theoretical ethanol yield of 88.96%) was achieved after 32 h of the SSF process. A comparison of scanning electron micrographs of the ultrasound-pretreated and untreated samples of corn meal suspensions showed that the ultrasound stimulated degradation of starch granules and release of glucose, and thereby accelerated the starch hydrolysis due to the cavitation and acoustic streaming caused by the ultrasonic action.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Food Chemistry", title = "Ultrasound-assisted production of bioethanol by simultaneous saccharification and fermentation of corn meal", pages = "222-216", number = "1", volume = "122", doi = "10.1016/j.foodchem.2010.02.063" }
Nikolić, S., Mojović, L., Rakin, M., Pejin, D.,& Pejin, J.. (2010). Ultrasound-assisted production of bioethanol by simultaneous saccharification and fermentation of corn meal. in Food Chemistry Elsevier Sci Ltd, Oxford., 122(1), 216-222. https://doi.org/10.1016/j.foodchem.2010.02.063
Nikolić S, Mojović L, Rakin M, Pejin D, Pejin J. Ultrasound-assisted production of bioethanol by simultaneous saccharification and fermentation of corn meal. in Food Chemistry. 2010;122(1):216-222. doi:10.1016/j.foodchem.2010.02.063 .
Nikolić, Svetlana, Mojović, Ljiljana, Rakin, Marica, Pejin, Dušanka, Pejin, Jelena, "Ultrasound-assisted production of bioethanol by simultaneous saccharification and fermentation of corn meal" in Food Chemistry, 122, no. 1 (2010):216-222, https://doi.org/10.1016/j.foodchem.2010.02.063 . .