Data/hora: 10/06/2024 08:07:16

Provedor de dados: | 58
País: | Brazil
Título: | Canthaxanthin biosynthesis by Dietzia natronolimnaea HS-1: effects of inoculation and aeration rate
Autores: | Rostami,Forouzan; Razavi,Seyed Hadi; Sepahi,Abbas Akhavan; Gharibzahedi,Seyed Mohammad Taghi.
Data: | 2014-06-01
Ano: | 2014
Palavras-chave: | Dietzia; Microbial canthaxanthin; Batch bioreactor; Response surface methodology; Modeling.
Resumo: | The interest in production of natural colorants by microbial fermentation has been currently increased. The effects of D-glucose concentration (3.18-36.82 g/L), inoculum size (12.5 x 10(9)-49.5 x 10(9) cfu cells/mL) and air-flow rate (1.95-12.05 L/L min) on the biomass, total carotenoid and canthaxanthin (CTX) accumulation of Dietzia natronolimnaea HS-1 in a batch bioreactor was scrutinized using a response surface methodology-central composite rotatable design (RSM-CCRD). Second-order polynomial models with high R² values ranging from 0.978 to 0.990 were developed for the studied responses using multiple linear regression analysis. The models showed the maximum cumulative amounts of biomass (7.85 g/L), total carotenoid (5.48 mg/L) and CTX (4.99 mg/L) could be achieved at 23.38 g/L of D-glucose, 31.2 x 10(9) cfu cells/mL of inoculation intensity and air-flow rate of 7.85 L/L min. The predicted values for optimum conditions were in good agreement with experimental data.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200011
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822014005000046
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.45 n.2 2014
Fonte: | info:eu-repo/semantics/openAccess