Mathematical modeling of second generation bioethanol production with cell recycle...
| Full text | |
| Author(s): |
Santos, Samantha Christine
;
de Sousa, Amanda Silva
;
Dionisio, Suzane Rodrigues
;
Tramontina, Robson
;
Ruller, Roberto
;
Squina, Fabio Marcio
;
Rossell, Carlos Eduardo Vaz
;
da Costa, Aline Carvalho
;
Ienczak, Jaciane Lutz
Total Authors: 9
|
| Document type: | Journal article |
| Source: | Bioresource Technology; v. 219, p. 319-329, NOV 2016. |
| Web of Science Citations: | 10 |
| Abstract | |
Here, it is shown three-step investigative procedures aiming to improve pentose-rich fermentations performance, involving a simple system for elevated mass production by Scheffersomyces stipitis (I), cellular recycle batch fermentations (CRBFs) at high cell density using two temperature strategies (fixed at 30 degrees C; decreasing from 30 to 26 degrees C) (II), and a short-term adaptation action seeking to acclimatize the microorganism in xylose rich-media (III). Cellular propagation provided 0.52 g(dry) (cell) (weight) g(RS)(1), resulting in an expressive value of 45.9 g(dry cell weight) L (1). The yeast robustness in CRBF was proven by effective ethanol production, reaching high xylose consumption (81%) and EtOH productivity (1.53 g L (1) h (1)). Regarding the short-term adaptation, S. stipitis strengthened its robustness, as shown by a 6-fold increase in xylose reductase (XR) activity. The short fermentation time (20 h for each batch) and the fermentation kinetics for ethanol production from xylose are quite promising. (C) 2016 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 14/01135-0 - Second generation bioethanol production in intensified bioreactors from improved Scheffersomyces stipitis by induced evolution |
| Grantee: | Samantha Christine Santos |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| FAPESP's process: | 08/57873-8 - An integrated process for total bioethanol production and zero CO2 emission |
| Grantee: | Rubens Maciel Filho |
| Support type: | Program for Research on Bioenergy (BIOEN) - Thematic Grants |