Ethanol effect on batch and fed-batch Arthrospira platensis growth

Autor(es)

Bezerra, Raquel P. ^[1] ; Matsudo, Marcelo C. ^[1] ; Perez Mora, Lina S. ^[1] ; Sato, Sunao ^[1] ; Monteiro de Carvalho, Joao C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Pharmaceut Sci, Dept Biochem & Pharmaceut Technol, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Industrial Microbiology & Biotechnology; v. 41, n. 4, p. 687-692, APR 2014.
• Citações Web of Science: 3

Resumo

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)

• Processo FAPESP: 06/54959-3 - Cultivo descontinuo alimentado de spirulina platensis (arthrospira) em reator tubular utilizando ureia como fonte de nitrogenio e co2 puro ou proveniente de fermentacao alcoolica.
• Beneficiário: Raquel Pedrosa Bezerra
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 06/54960-1 - Cultivo continuo de spirulina platensis (arthrospira) em reator tubular utilizando ureia como fonte de nitrogenio e co2 puro ou proveniente de fermentacao alcoolica.
• Beneficiário: Marcelo Chuei Matsudo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 06/56976-2 - Cultivo de Spirulina platensis (Arthrospira) em reator tubular utilizando ureia como fonte de nitrogênio e CO2 puro ou proveniente de fermentação alcoólica
• Beneficiário: João Carlos Monteiro de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular