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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Bioethanol production by recycled Scheffersomyces stipitis in sequential batch fermentations with high cell density using xylose and glucose mixture

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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: 6
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