| Registro completo |
| Provedor de dados: |
Electron. J. Biotechnol.
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| País: |
Chile
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| Título: |
Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation
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| Autores: |
Nuanpeng,Sunan
Laopaiboon,Lakkana
Srinophakun,Penjit
Klanrit,Preekamol
Jaisil,Prasit
Laopaiboon,Pattana
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| Data: |
2011-01-01
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| Ano: |
2011
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| Palavras-chave: |
Batch
Ethanol fermentation
Repeated-batch
Scale up
Sweet sorghum
VHG
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| Resumo: |
Batch ethanol fermentations from sweet sorghum juice by Saccharomyces cerevisiae NP 01 were carried out in a 500 ml air-locked Erlenmeyer flask under very high gravity (VHG) and static conditions. The maximum ethanol production efficiency was obtained when 9 g l-1 of yeast extract was supplemented to the juice. The ethanol concentration (P), productivity (Qp) and yield (Yp/s) were 120.24 ± 1.35 g l-1, 3.01 ± 0.08 g l-1 h-1 and 0.49 ± 0.01, respectively. Scale up ethanol fermentation in a 5-litre bioreactor at an agitation rate of 100 rev min-1 revealed that P, Qp and Yp/s were 139.51 ± 0.11 g l-1, 3.49 ± 0.00 g l-1 h-1 and 0.49 ± 0.01, respectively, whereas lower P (119.53 ± 0.20 g l-1) and Qp (2.13 ± 0.01 g l-1 h-1) were obtained in a 50-litre bioreactor. In the repeated-batch fermentation in the 5-litre bioreactor with fill and drain volume of 50% of the working volume, lower P and Qp were observed in the subsequent batches. P in batch 2 to 8 ranged from 103.37 ± 0.28 to 109.53 ± 1.06 g l-1.
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| Tipo: |
Journal article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100004
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| Editor: |
Pontificia Universidad Católica de Valparaíso
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| Formato: |
text/html
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| Fonte: |
Electronic Journal of Biotechnology v.14 n.1 2011
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