Results 61 to 70 of about 841 (169)

Bio-Hydrogen Production from Cheese Whey by Dark Fermentation

Chemical Engineering Transactions, 2014
This paper focuses on the production of bio-hydrogen by dark fermentation of de-proteinized (by membrane ultra-filtration) cheese whey, an abundant waste stream of the food industry.
A. Teli, E. Ficara, F. Malpei
doaj   +1 more source

Evaluation of Yeast Alcohol Acetyltransferases for Ethyl Acetate Production in Clostridium ljungdahlii

Engineering in Life Sciences, Volume 25, Issue 1, January 2025.
ABSTRACT Sustainable chemical production from C1 gaseous substrates, such as syngas or CO2/H2, can be achieved through gas fermentation. In gas fermentation, acetogenic bacteria are able to utilize oxidized inorganic carbon sources as the sole carbon source and electron acceptor, while reduced inorganic species are used as the electron donor ...
Santiago T. Boto, Kareem Gerges, Bettina Bardl, Miriam A. Rosenbaum   +3 more
wiley   +1 more source

Acetate Shock Loads Enhance CO Uptake Rates of Anaerobic Microbiomes

Microbial Biotechnology, Volume 17, Issue 12, December 2024.
Pyrolysis of lignocellulosic biomass yields syngas and an acetate‐rich wastewater. This study examined high acetate levels during syngas co‐fermentation by anaerobic microbiomes at different pHs and temperatures. Microbiomes converted syngas at 64 g/L acetate and pH 5.5. Acetate supplementation increased CO conversion rates and altered product spectrum
Alberto Robazza, Ada Raya i Garcia, Flávio C. F. Baleeiro, Sabine Kleinsteuber, Anke Neumann   +4 more
wiley   +1 more source

Elementary mode analysis reveals that Clostridium acetobutylicum modulates its metabolic strategy under external stress

, 2014
Clostridium acetobutylicum is a strict anaerobe which exhibits two distinct steps in its metabolic network. In the first step, sugars are oxidized to organic acids (acetic and butyric). This is accompanied with growth.
Saini, Supreet, GAYEN, K, Kumar, Manish, SAINI, S, Gayen, Kalyan, KUMAR, M   +5 more
core   +1 more source

Physiological Events in Clostridium acetobutylicum during the Shift from Acidogenesis to Solventogenesis in Continuous Culture and Presentation of a Model for Shift Induction [PDF]

Applied and Environmental Microbiology, 1992
The pH of continuous cultures of Clostridium acetobutylicum growing at pH 5.6 was allowed to decrease to 4.3 after acid production and thereby to shift the cultures from acetate and butyrate to acetone and butanol formation. Several parameters were determined during the shift.
H, Grupe, G, Gottschalk
openaire   +2 more sources

HYDROGEN PRODUCTION AND PERFORMANCE OF ANAEROBIC FIXED-BED REACTORS USING THREE SUPPORT ARRANGEMENTS FROM CASSAVA STARCH WASTEWATER [PDF]

Engenharia Agrícola, 2017
Fixed-bed reactors have been considered promise alternatives for hydrogen production due to their simple construction and increase in the biomass retention.
Douglas G. B. Torres, Shaiane Dal' Maso Lucas, Cristiane L. Andreani, Karina Q. de Carvalho, Silvia R. M. Coelho, Simone D. Gomes   +5 more
doaj   +1 more source

Adaptive laboratory evolution of Clostridium autoethanogenum to metabolize CO2 and H2 enhances growth rates in chemostat and unravels proteome and metabolome alterations

Microbial Biotechnology, Volume 17, Issue 4, April 2024.
Adaptive laboratory evolution was used in this study to improve Clostridium autoethanogenum's growth on CO2 and H2. The growth rate improved using various methods, where one using a 2% CO gas mixture retained the most ethanol produciton – Evolved D. Under the same CO2 and H2 chemostat conditions, no changes in rates and titres were found between the ...
James Heffernan, R. Axayactl Garcia Gonzalez, Vishnu Mahamkali, Tim McCubbin, Dara Daygon, Lian Liu, Robin Palfreyman, Audrey Harris, Michael Koepke, Kaspar Valgepea, Lars Keld Nielsen, Esteban Marcellin   +11 more
wiley   +1 more source

Supplementary Material for: Genome-Wide Gene Expression Analysis of the Switch between Acidogenesis and Solventogenesis in Continuous Cultures of Clostridium acetobutylicum

, 2017
Clostridium acetobutylicum is able to switch from acidogenic growth to solventogenic growth. We used phosphate-limited continuous cultures that established acidogenic growth at pH 5.8 and solventogenic growth at pH 4.5.
Ehrenreich A. (4105120), Dürre P. (4124020), Grimmler C. (4124017), Bahl H. (4124023), Liebl W. (4124011), Krauβe D. (4124026), Fischer R.-J. (4124029), Janssen H. (4124014)   +7 more
core   +1 more source

Elucidation of the roles of adhE1 and adhE2 in the primary metabolism of Clostridium acetobutylicum by combining in-frame gene deletion and a quantitative system-scale approach [PDF]

, 2016
Background: Clostridium acetobutylicum possesses two homologous adhE genes, adhE1 and adhE2, which have been proposed to be responsible for butanol production in solventogenic and alcohologenic cultures, respectively.
Croux, Christian, Soucaille, Philippe, Yoo, Minyeong, Meynial Salles, Isabelle, Philippe Soucaille, Minyeong Yoo (3558383), Isabelle Meynial-Salles (1982569), Philippe Soucaille (1982557), Isabelle Meynial-Salles, Christian Croux (3558380), Christian Croux, Minyeong Yoo   +11 more
core   +1 more source

Transcriptional analysis of amino acid, metal ion, vitamin and carbohydrate uptake in butanol-producing Clostridium beijerinckii NRRL B-598.

PLoS ONE, 2019
In-depth knowledge of cell metabolism and nutrient uptake mechanisms can lead to the development of a tool for improving acetone-butanol-ethanol (ABE) fermentation performance and help to overcome bottlenecks in the process, such as the high cost of ...
Maryna Vasylkivska, Katerina Jureckova, Barbora Branska, Karel Sedlar, Jan Kolek, Ivo Provaznik, Petra Patakova   +6 more
doaj   +1 more source