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Document Details
Document Type
:
Article In Journal
Document Title
:
Effect of some fermentation parameters on ethanol production from beet molasses by Saccharomyces cerevisiae CAIM13
Effect of some fermentation parameters on ethanol production from beet molasses by Saccharomyces cerevisiae CAIM13
Subject
:
Chemistry
Document Language
:
English
Abstract
:
Problem statement: Some component of fermentation medium showed to reduce the Saccharomyces cerivisae production of ethanol. Approach: This study was designed to evaluate the role of some fermentation parameters in affecting ethanol productivity from beet molasses BM by Saccharomyces cerevisiae CAIM13. Results: Increase in cell concentration (inoculums size) of the yeast above 3.6×105 cells/100 mL decreased the ethanol yield. The yeast could tolerate ethanol concentration up to 10% but failed to grow at concentration of 12 and 15%. Employment of a benchscale tank fermenter enhanced the fermentation efficiency. 77% of BM sugars were assimilated after 48h giving a concentration of 5.4% ethanol. Utilization of a cell-recycling technique showed that the tested organism was capable of performing four fermentation cycles. The mud-free, H 2SO 4-treated beet molasses TBM was superior to sucrose in the repeated batch fermentation technique. A continuousflow fermentation technique employing immobilized yeast cells yielded maximum ethanol productivity after 6 days. Conclusion: The present investigation has demonstrated the importance of some fermentation parameters in improving the alcoholic fermentation technology of BM. When free cells of S. cerevisiae. In the case of immobilized cells, the continuous-flow technique speared superior to the repeated batch-fermentation technique in production of alcohol from TBM.
ISSN
:
1557-4989
Journal Name
:
American Journal of Agricultural and Biological Science
Volume
:
6
Issue Number
:
2
Publishing Year
:
1432 AH
2011 AD
Article Type
:
Article
Added Date
:
Monday, June 4, 2012
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
عواطف عابد الجديبي
Al-Judaibi, Awatif Abid
Researcher
Doctorate
aamaljudaibi@kau.edu.sa
Files
File Name
Type
Description
33471.pdf
pdf
Abstract
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