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Modeling of biomass production by Spirulinaplatensis as function of phosphate concentrations and pH regimes.
Bioresour Technol ; 100(14): 3625-9, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19329296
ABSTRACT
Batch cultivations were performed to evaluate the influence of phosphate concentrations (0.25, 0.5, 0.75, and 1.0 g L(-1)) for pH regimes (9.5, 10.0, and 10.5) on the biomass production by Spirulina platensis. The best condition for cell growth (3.099 g L(-1)) was found at 0.5 g L(-1) phosphate and pH value of 10.0. Cultivation time, phosphate, and pH caused to increase significantly (p<0.01) in biomass production by S. platensis. Lag time was observed up to 4 h. After then, biomass production increased sharply (p<0.01) from 0.020 g L(-1) to 2.063, 2.213, 1.532, and 0.797 g L(-1) at 0.25, 0.5, 0.75, and 1.0 g L(-1) phosphate values, respectively. Modified Gompertz model could be regarded as sufficient to describe the biomass production by S. platensis with high determination coefficients and low sum of square value indicated that. Biological parameters for biomass production were successfully predicted by modified Gompertz model.
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Fosfatos / Biotecnologia / Clorofila / Biomassa / Spirulina / Nitratos Aspecto clínico: Predição / Prognóstico Idioma: Inglês Revista: Bioresour Technol Assunto da revista: Engenharia Biomédica Ano de publicação: 2009 Tipo de documento: Artigo País de afiliação: Turquia