Fermentation of molasses by Zymomonas mobilis: Effects of temperature and sugar concentration on ethanol production

2007 ◽  
Vol 98 (15) ◽  
pp. 2824-2828 ◽  
Author(s):  
M.L. Cazetta ◽  
M.A.P.C. Celligoi ◽  
J.B. Buzato ◽  
I.S. Scarmino
Keyword(s):  
Ethanol Production ◽  
Zymomonas Mobilis ◽  
Sugar Concentration ◽  
Effects Of Temperature

scholarly journals The Quorum Sensing Auto-Inducer 2 (AI-2) Stimulates Nitrogen Fixation and Favors Ethanol Production over Biomass Accumulation in Zymomonas mobilis

2021 ◽  
Vol 22 (11) ◽  
pp. 5628
Author(s):  
Valquíria Campos Alencar ◽  
Juliana de Fátima dos Santos Silva ◽  
Renata Ozelami Vilas Boas ◽  
Vinícius Manganaro Farnézio ◽  
Yara N. L. F. de Maria ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Quorum Sensing ◽  
Ethanol Production ◽  
N2 Fixation ◽  
Energy Demand ◽  
Zymomonas Mobilis ◽  
Biomass Accumulation ◽  
High Energy ◽  
Gram Negative ◽  
Expression Of Genes

Autoinducer 2 (or AI-2) is one of the molecules used by bacteria to trigger the Quorum Sensing (QS) response, which activates expression of genes involved in a series of alternative mechanisms, when cells reach high population densities (including bioluminescence, motility, biofilm formation, stress resistance, and production of public goods, or pathogenicity factors, among others). Contrary to most autoinducers, AI-2 can induce QS responses in both Gram-negative and Gram-positive bacteria, and has been suggested to constitute a trans-specific system of bacterial communication, capable of affecting even bacteria that cannot produce this autoinducer. In this work, we demonstrate that the ethanologenic Gram-negative bacterium Zymomonas mobilis (a non-AI-2 producer) responds to exogenous AI-2 by modulating expression of genes involved in mechanisms typically associated with QS in other bacteria, such as motility, DNA repair, and nitrogen fixation. Interestingly, the metabolism of AI-2-induced Z. mobilis cells seems to favor ethanol production over biomass accumulation, probably as an adaptation to the high-energy demand of N2 fixation. This opens the possibility of employing AI-2 during the industrial production of second-generation ethanol, as a way to boost N2 fixation by these bacteria, which could reduce costs associated with the use of nitrogen-based fertilizers, without compromising ethanol production in industrial plants.

scholarly journals Ethanol Production from Glucose and Xylose by Immobilized Zymomonas mobilis CP4(pZB5)

2000 ◽  
Vol 84-86 (1-9) ◽  
pp. 525-542 ◽  
Author(s):  
Mahesh S. Krishnan ◽  
Maria Blanco ◽  
Christopher K. Shattuck ◽  
Nhuan P. Nghiem ◽  
Brian H. Davison
Keyword(s):  
Ethanol Production ◽  
Zymomonas Mobilis

scholarly journals Ethanol production from Jerusalem artichoke (Helianthus tuberosus L.) by Zymomonas mobilis TISTR548

2011 ◽  
Vol 10 (52) ◽  
pp. 10691-10697 ◽  
Author(s):  
Thanonkeo Pornthap ◽  
Thanonkeo Sudarat ◽  
Charoensuk Kannikar ◽  
Yamada Mamoru
Keyword(s):  
Ethanol Production ◽  
Zymomonas Mobilis ◽  
Jerusalem Artichoke ◽  
Helianthus Tuberosus

Continuous ethanol production at high glucose concentrations by a passively immobilized Zymomonas mobilis system

1989 ◽  
Vol 31 (3) ◽  
Author(s):  
MariaR. Castellar ◽  
Francisco Borrego ◽  
Manuel C�novas ◽  
Arturo Manj�n ◽  
Jos�L. Iborra
Keyword(s):  
Ethanol Production ◽  
High Glucose ◽  
Zymomonas Mobilis

A Hybrid Neural Model of Ethanol Production by Zymomonas mobilis

1999 ◽  
pp. 277-291
Author(s):  
Anderson W. Silva da Henriques ◽  
Aline C. da Costa ◽  
Tito L. M. Alves ◽  
Enrique L. Lima
Keyword(s):  
Ethanol Production ◽  
Zymomonas Mobilis ◽  
Neural Model
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