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Stable current outputs and phytate degradation by yeast-based biofuel cell
Yolina Hubenova1, Danail Georgiev, Mario Mitov
1Department of Biochemistry and Microbiology, 'Paisii Hilendarski' University of Plovdiv, Bulgaria.
Yeast (Chichester, England)
|June 27, 2014
Summary
Candida melibiosica yeast enhances phytase activity in biofuel cells, generating electricity and aiding phytate bioremediation. Interruptive polarization boosts phytase yield, offering a novel method for microbial enzyme production.
Area of Science:
- Biotechnology
- Microbiology
- Electrochemistry
Background:
- Phytase enzymes are crucial for breaking down phytate, a major phosphorus source in plants.
- Biofuel cells offer a sustainable platform for energy generation and waste treatment.
Purpose of the Study:
- To investigate the phytase activity of Candida melibiosica 2491 yeast in biofuel cells.
- To explore the potential of yeast-based biofuel cells for simultaneous electricity generation and phytate bioremediation.
- To evaluate the effect of polarization on yeast biomass and phytase yield.
Main Methods:
- Utilized Candida melibiosica 2491 yeast as a biocatalyst in a biofuel cell.
- Applied continuous and interruptive polarization under constant load.
- Measured electrical outputs and monitored yeast biomass.
- Assessed phytase activity.
Main Results:
- Enhanced phytase activity was observed in the yeast strain when used as a biocatalyst.
- Polarization increased yeast biomass and electrical outputs.
- Continuous polarization led to higher steady-state electrical outputs due to earlier mediator production.
- Interruptive polarization resulted in higher phytase activity.
Conclusions:
- Candida melibiosica yeast-based biofuel cells can simultaneously generate electricity and bioremediate phytate.
- Polarization is an effective method to enhance yeast biomass and electrical output.
- Interruptive polarization presents a novel strategy for increasing microbial phytase yield.
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