scholarly journals Chain elongation may occur in protein mixed-culture fermentation without supplementing electron donor compounds

2021 ◽  
pp. 106943
Author(s):  
R. Bevilacqua ◽  
A. Regueira ◽  
M. Mauricio-Iglesias ◽  
J.M. Lema ◽  
M. Carballa
Keyword(s):  
Mixed Culture ◽  
Electron Donor ◽  
Chain Elongation ◽  
Mixed Culture Fermentation

scholarly journals Product Diversity Linked to Substrate Usage in Chain Elongation by Mixed-Culture Fermentation

2016 ◽  
Vol 50 (12) ◽  
pp. 6467-6476 ◽  
Author(s):  
Marta Coma ◽  
Ramiro Vilchez-Vargas ◽  
Hugo Roume ◽  
Ruy Jauregui ◽  
Dietmar H. Pieper ◽  
...  
Keyword(s):  
Mixed Culture ◽  
Chain Elongation ◽  
Product Diversity ◽  
Mixed Culture Fermentation ◽  
Substrate Usage

scholarly journals Identifying chain elongation processes during the mixed-culture fermentation of proteins

2020 ◽  
Author(s):  
Riccardo Bevilacqua
Keyword(s):  
Mixed Culture ◽  
Chain Elongation ◽  
Mixed Culture Fermentation ◽  
The Right

Contribution to the International Chain Elongation Conference 2020 | ICEC 2020. An abstract can be found in the right column.

scholarly journals Reactor Designs and Configurations for Biological and Bioelectrochemical C1 Gas Conversion: A Review

2021 ◽  
Vol 18 (21) ◽  
pp. 11683
Author(s):  
Azize Ayol ◽  
Luciana Peixoto ◽  
Tugba Keskin ◽  
Haris Nalakath Abubackar
Keyword(s):  
Mass Transfer ◽  
Electron Donor ◽  
Molecular Hydrogen ◽  
Chain Elongation ◽  
Product Portfolio ◽  
Scientific Interest ◽  
Important Challenge ◽  
Poorly Soluble ◽  
Conversion Technologies ◽  
Gas Conversion

Microbial C1 gas conversion technologies have developed into a potentially promising technology for converting waste gases (CO2, CO) into chemicals, fuels, and other materials. However, the mass transfer constraint of these poorly soluble substrates to microorganisms is an important challenge to maximize the efficiencies of the processes. These technologies have attracted significant scientific interest in recent years, and many reactor designs have been explored. Syngas fermentation and hydrogenotrophic methanation use molecular hydrogen as an electron donor. Furthermore, the sequestration of CO2 and the generation of valuable chemicals through the application of a biocathode in bioelectrochemical cells have been evaluated for their great potential to contribute to sustainability. Through a process termed microbial chain elongation, the product portfolio from C1 gas conversion may be expanded further by carefully driving microorganisms to perform acetogenesis, solventogenesis, and reverse β-oxidation. The purpose of this review is to provide an overview of the various kinds of bioreactors that are employed in these microbial C1 conversion processes.

Metabolic Products of Mixed Culture Fermentation

2020 ◽  
pp. 75-92
Author(s):  
Siddhartha Pandey ◽  
Nitin Kumar Singh ◽  
Tara Chand Yadav ◽  
Ankur Kumar Bansal ◽  
Arti Thanki ◽  
...  
Keyword(s):  
Mixed Culture ◽  
Mixed Culture Fermentation ◽  
Metabolic Products

scholarly journals Enhanced Anaerobic Mixed Culture Fermentation with Anion-Exchange Resin for Caproate Production

Processes ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 404 ◽  
Author(s):  
Jiangnan Yu ◽  
Jialin Liao ◽  
Zhenxing Huang ◽  
Peng Wu ◽  
Mingxing Zhao ◽  
...  
Keyword(s):  
Mixed Culture ◽  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Feedback Inhibition ◽  
Control Group ◽  
Low Grade ◽  
Mixed Culture Fermentation ◽  
Strong Base ◽  
Desorption Efficiency

The bioproduction of caproate from organic waste by anaerobic mixed culture is a very attractive technology for upgrading low-grade biomass to a high-value resource. However, the caproate production process is markedly restricted by the feedback inhibition of caproate. In this study, four types of anion-exchange resin were investigated for their enhancing capability in caproate fermentation of anaerobic mixed culture. The strong base anion-exchange resin D201 showed the highest adsorption capacity (62 mg/g), selectivity (7.50), and desorption efficiency (88.2%) for caproate among the test resins. Subsequently, the optimal desorption temperature and NaOH concentration of eluent for D201 were determined. The adsorption and desorption efficiency of D201 remained stable during eight rounds of the adsorption–desorption cycle, indicating a satisfactory reusability of D201. Finally, performances of caproate fermentation with and without resin adsorption for carboxylate were evaluated. The results demonstrated that the final concentration of caproate was improved from 12.43 ± 0.29 g/L (without adsorption) to 17.30 ± 0.13 g/L (with adsorption) and the maximum caproate production rate was improved from 0.60 ± 0.01 g/L/d to 2.03 ± 0.02 g/L/d. In the group with adsorption, the cumulative caproate production was increased to 29.10 ± 0.33 g/L broth, which was 134% higher than that of the control group. Therefore, this study provides effective approaches to enhance caproate production.

Mixed-culture fermentation for enhanced C21-hydroxylation of glucocorticoids

2020 ◽  
Vol 314-315 ◽  
pp. 14-24
Author(s):  
Lisa König ◽  
Sabine Szczesny ◽  
Simone Brixius-Anderko ◽  
Rita Bernhardt ◽  
Frank Hannemann
Keyword(s):  
Mixed Culture ◽  
Mixed Culture Fermentation

scholarly journals Metabolic modeling for predicting VFA production from protein‐rich substrates by mixed‐culture fermentation

2019 ◽  
Vol 117 (1) ◽  
pp. 73-84 ◽  
Author(s):  
Alberte Regueira ◽  
Juan M. Lema ◽  
Marta Carballa ◽  
Miguel Mauricio‐Iglesias
Keyword(s):  
Mixed Culture ◽  
Metabolic Modeling ◽  
Mixed Culture Fermentation ◽  
Protein Rich
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