Data/hora: 05/06/2024 17:22:26

Provedor de dados: | 52
País: | Brazil
Título: | Production of 2,3-Butanediol from Sucrose by Klebsiella pneumoniae NRRL B199 in Batch and Fed-Batch Reactors
Autores: | Silveira,Mauricio M.; Berbert-Molina,M.; Prata,A. M. R.; Schmidell,W.
Data: | 1998-01-01
Ano: | 1998
Palavras-chave: | Klebsiella pneumoniae 2; 3-butanediol/batch process fed-batch process.
Resumo: | In batch mode, Klebsiella pneumoniae growth and 2,3-butanediol/acetoin formation are increasingly inhibited by initial sucrose concentrations (S0) over 60 g/L. At non inhibitory conditions, a maximum sucrose consumption rate of 1,5 g/L/h was measured. With S0=204 g/L however, this rate decreased to 0.15 g/L/h. K. pneumoniae fermented 204 g/L sucrose to produce 84.3 g/L of a mixture 2,3-butanediol/acetoin with a yield of 0.41 g/g and a productivity of 1.06 g/L/h. Higher oxygen transfer rates improved the overall process rate but the product yield was reduced. Avoiding substrate inhibition, by performing the fermentation in fed-batch mode, a final 2,3-butanediol/acetoin concentration of 80.0 g/L was achieved. In this case, a productivity of 2.63 g/L/h and a product yield of 0.37 g/g were calculated.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000300009
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89131998000300009
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.41 n.3 1998
Fonte: | info:eu-repo/semantics/openAccess