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- Title
Optimization of Fermentation Parameters to Enhance the Production of Ethanol from Palmyra Jaggery Using Saccharomyces cerevisiae in a Batch Fermentor.
- Authors
Veera Bandaru; Subba Somalanka; Damodara Mendu; Sarat Imandi; Narasimha Medicherla; Thangadurai Devarajan; Jayaraju Karothi
- Abstract
Abstract  Application of statistical experimental designs for optimization of fermentation parameters to enhance ethanol production, which is an economical and renewable energy source using Saccharomyces cerevisiae NCIM 3090 from palmyra jaggery, was studied in a batch fermentor. Using PlackettâBurman design, impeller speed, concentrations of CoCl2 and KH2PO4 were identified as significant variables, which highly influenced ethanol production, and these variables were further optimized using a central composite design (CCD). The ethanol production was adequately approximated with a full quadratic equation obtained from three factors and five levels of CCD. Maximum ethanol concentration of 132.56 g/l (16.8% [v/v]) was obtained for an impeller speed of 247.179 (â250) rev/min, CoCl2 of 0.263 g/l and KH2PO4 of 2.39 g/l. A second-order polynomial regression model was fitted and was found adequate with R 2 of 0.8952. This combined statistical approach enables rapid identification and investigation of significant parameters for improving the ethanol production and could be very useful in optimizing processes.
- Subjects
ALCOHOL; SACCHAROMYCES cerevisiae; FERMENTATION; REGRESSION analysis
- Publication
Applied Biochemistry & Biotechnology, 2007, Vol 143, Issue 3, p224
- ISSN
0273-2289
- Publication type
Article
- DOI
10.1007/s12010-007-0048-x