Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation
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 t...
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Pontificia Universidad Católica de Valparaíso
2011
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oai:scielo:S0717-345820110001000042011-05-24Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentationNuanpeng,SunanLaopaiboon,LakkanaSrinophakun,PenjitKlanrit,PreekamolJaisil,PrasitLaopaiboon,Pattana batch ethanol fermentation repeated-batch scale up sweet sorghum VHG 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.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.14 n.1 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100004en |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
batch ethanol fermentation repeated-batch scale up sweet sorghum VHG |
| spellingShingle |
batch ethanol fermentation repeated-batch scale up sweet sorghum VHG Nuanpeng,Sunan Laopaiboon,Lakkana Srinophakun,Penjit Klanrit,Preekamol Jaisil,Prasit Laopaiboon,Pattana Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation |
| description |
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. |
| author |
Nuanpeng,Sunan Laopaiboon,Lakkana Srinophakun,Penjit Klanrit,Preekamol Jaisil,Prasit Laopaiboon,Pattana |
| author_facet |
Nuanpeng,Sunan Laopaiboon,Lakkana Srinophakun,Penjit Klanrit,Preekamol Jaisil,Prasit Laopaiboon,Pattana |
| author_sort |
Nuanpeng,Sunan |
| title |
Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation |
| title_short |
Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation |
| title_full |
Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation |
| title_fullStr |
Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation |
| title_full_unstemmed |
Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation |
| title_sort |
ethanol production from sweet sorghum juice under very high gravity conditions: batch, repeated-batch and scale up fermentation |
| publisher |
Pontificia Universidad Católica de Valparaíso |
| publishDate |
2011 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100004 |
| work_keys_str_mv |
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| _version_ |
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