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Published on: June 1, 2018
Magnetic field effects on cytochrome c-mediated bioelectrocatalytic transformations
Eugenii Katz1, Oleg Lioubashevski, Itamar Willner
1Contribution from the Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
Journal of the American Chemical Society
|September 2, 2004
Summary
Constant magnetic fields significantly boost bioelectrocatalytic rates, potentially via magnetohydrodynamics. This discovery advances understanding of magnetic field effects on biological systems and biotechnology applications.
Area of Science:
- Biophysics
- Electrochemistry
- Biotechnology
Background:
- Magnetic fields influence biological processes, but mechanisms remain unclear.
- Magnetohydrodynamic effects are proposed to enhance bioelectrocatalysis at interfaces.
Purpose of the Study:
- To investigate magnetic field effects on bioelectrocatalytic transformations.
- To elucidate the role of magnetohydrodynamics in these processes.
Main Methods:
- Studied cytochrome c-mediated reduction of oxygen and oxidation of lactate using cytochrome oxidase and lactate dehydrogenase.
- Applied magnetic fields up to 1 Tesla (T) to functionalized interfaces.
- Analyzed limiting current dependence on magnetic field strength (B) and electroactive species concentration (C).
Main Results:
- Observed a significant, approximately 3-fold, increase in bioelectrochemical transformation rates under magnetic fields.
- Demonstrated that limiting current is proportional to B(1/3)C*(4/3).
Conclusions:
- Magnetic fields, potentially through magnetohydrodynamics, enhance bioelectrocatalytic rates at interfaces.
- Findings have implications for understanding natural biocatalysis and improving biotechnological processes.
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