Document Detail


Outward electron transfer by Saccharomyces cerevisiae monitored with a bi-cathodic microbial fuel cell-type activity sensor.
MedLine Citation:
PMID:  19946948     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A Janus head-like bi-cathodic microbial fuel cell was constructed to monitor the electron transfer from Saccharomyces cerevisiae to a woven carbon anode. The experiments were conducted during an ethanol cultivation of 170 g/l glucose in the presence and absence of yeast-peptone medium. First, using a basic fuel-cell type activity sensor, it was shown that yeast-peptone medium contains electroactive compounds. For this purpose, 1% solutions of soy peptone and yeast extract were subjected to oxidative conditions, using a microbial fuel cell set-up corresponding to a typical galvanic cell, consisting of culture medium in the anodic half-cell and 0.5 M K(3)Fe(CN)(6) in the cathodic half-cell. Second, using a bi-cathodic microbial fuel cell, it was shown that electrons were transferred from yeast cells to the carbon anode. The participation of electroactive compounds in the electron transport was separated as background current. This result was verified by applying medium-free conditions, where only glucose was fed, confirming that electrons are transferred from yeast cells to the woven carbon anode. Knowledge about the electron transfer through the cell membrane is of importance in amperometric online monitoring of yeast fermentations and for electricity production with microbial fuel cells.
Authors:
Rapha?l Ducommun; Marie-France Favre; Delphine Carrard; Fabian Fischer
Related Documents :
2358458 - Respiratory failure and stimulation of glycolysis in chinese hamster ovary cells expose...
3007528 - An agent or agents produced by virus-transformed cells cause unregulated ruffling in un...
10567068 - Metabolic shifts by nutrient manipulation in continuous cultures of bhk cells.
17113288 - Synthesis of 2'-paclitaxel methyl 2-glucopyranosyl succinate for specific targeted deli...
23625588 - Differential effects on lung cancer cell proliferation by agonists of glucocorticoid an...
24878898 - A novel herbal medicine, kiom-c, induces autophagic and apoptotic cell death mediated b...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Yeast (Chichester, England)     Volume:  27     ISSN:  1097-0061     ISO Abbreviation:  Yeast     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-02-26     Completed Date:  2010-05-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8607637     Medline TA:  Yeast     Country:  England    
Other Details:
Languages:  eng     Pagination:  139-48     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2009 John Wiley & Sons, Ltd.
Affiliation:
Institute of Life Technologies, HES-SO Valais, University of Applied Sciences Western Switzerland, Route du Rawyl 64, 1950 Sion, Switzerland.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Bioelectric Energy Sources*
Carbon / metabolism
Culture Media / chemistry
Electron Transport*
Ethanol / metabolism
Glucose / metabolism
Oxidation-Reduction
Peptones / metabolism
Saccharomyces cerevisiae / metabolism*
Chemical
Reg. No./Substance:
0/Culture Media; 0/Peptones; 50-99-7/Glucose; 64-17-5/Ethanol; 7440-44-0/Carbon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  The therapist-client relationship, computerized self-help and active therapy ingredients.
Next Document:  Detection of Catabacter hongkongensis in polluted European water samples.