Related Experiment Video
Updated: Jun 17, 2026

Characterizing Electron Transport through Living Biofilms
Published on: June 1, 2018
Bioelectrocatalysis of Acetobacter aceti and Gluconobacter roseus for current generation
R Karthikeyan1, K Sathish Kumar, M Murugesan
1Electrodics and Electro Catalysis Division, CSIR-CECRI, Central Electrochemical Research Institute, Karaikudi-630 006, India.
Abstract:
Acetobacter aceti and Gluconobacter roseus, which are known to be responsible for the spoilage of wine, are used for current generation in batch-type microbial biofuel cells and it has been shown for the first time that these two microorganisms do not require mediators for the transfer of electrons to the anode. Three biofuel cells were constructed with two cells containing the pure cultures of each of the microorganisms as the biocatalyst (A-MFC, G-MFC) and the third cell was constructed with the mixed culture of these two microorganisms as the biocatalyst (AG-MFC). The performance of the biofuel cells was evaluated in terms of open circuit voltage (OCV), fuel consumption rate, internal resistance, power output, and coulombic efficiency. The mixed culture cell (AG-MFC) exhibits a better overall performance compared to the other cells.
Related Concept Videos
Microbial Fuel Cells
Fates of Pyruvate
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
The Citric Acid Cycle: Output
Regulation of Citric Acid Cycle
The citric acid cycle is regulated in several ways, including feedback inhibition, regulation of enzyme activities, and associated anaplerotic or cataplerotic pathways.
The primary substrate of the TCA cycle—acetyl CoA—is produced by the...
Electrochemical Cells
The Citric Acid Cycle
The Citric Acid Cycle: Overview
The citric...

