| Journal: | Electronic journal of biotechnology |
| Database: | PERIÓDICA |
| System number: | 000336236 |
| ISSN: | 0717-3458 |
| Authors: | Nuanpeng, Sunan1 Laopaiboon, Lakkana2 Srinophakun, Penjit3 Klanrit, Preekamol2 Jaisil, Prasit4 Laopaiboon, Pattana2 |
| Institutions: | 1Khon Kaen University, Graduate School, Khon Kaen. Tailandia 2Khon Kaen University, Faculty of Technology, Khon Kaen. Tailandia 3Kasetsart University, Faculty of Engineering, Bangkok, Phra Nakhon. Tailandia 4Khon Kaen University, Faculty of Agriculture, Khon Kaen. Tailandia |
| Year: | 2011 |
| Season: | Ene |
| Volumen: | 14 |
| Number: | 1 |
| Country: | Chile |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | 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 |
| Disciplines: | Biología |
| Keyword: | Biotecnología, Fermentación, Cultivo por lotes, Etanol, Bioproducción, Sorgo |
| Keyword: | Biology, Biotechnology, Fermentation, Batch culture, Ethanol, Bioproduction, Sorghum |
| Full text: | Texto completo (Ver PDF) |
