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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ethanol effect on batch and fed-batch Arthrospira platensis growth

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Author(s):
Bezerra, Raquel P. [1] ; Matsudo, Marcelo C. [1] ; Perez Mora, Lina S. [1] ; Sato, Sunao [1] ; Monteiro de Carvalho, Joao C. [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Fac Pharmaceut Sci, Dept Biochem & Pharmaceut Technol, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Industrial Microbiology & Biotechnology; v. 41, n. 4, p. 687-692, APR 2014.
Web of Science Citations: 3
Abstract

The ability of Arthrospira platensis to use ethanol as a carbon and energy source was investigated by batch process and fed-batch process. A. platensis was cultivated under the effect of a single addition (batch process) and a daily pulse feeding (fed-batch process) of pure ethanol, at different concentrations, to evaluate cell concentration (X) and specific growth rate (mu). A marked increase was observed in the cell concentration of A. platensis in runs with ethanol addition when compared to control cultures without ethanol addition. The fed-batch process using an ethanol concentration of 38 mg L-1 days(-1) reached the maximum cell concentration of 2,393 +/- A 241 mg L-1, about 1.5-fold that obtained in the control culture. In all experiments, the maximum specific growth rate was observed in the early exponential phase of cell growth. In the fed-batch process, mu decreased more slowly than in the batch process and control culture, resulting in the highest final cell concentration. Ethanol can be used as a feasible carbon and energy source for A. platensis growth via a fed-batch process. (AU)