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Magnetic artificial spores for robust interfacial biodesulfurization in pickering emulsions
Xiaohan Yang1, Meishu Li1, Kang Pan1
1Jiangxi Provincial Key Laboratory of Environmental Pollution Prevention and Control in Mining and Metallurgy, Jiangxi University of Science and Technology, Ganzhou 341000, China.
Bioresource Technology
|August 7, 2026
Summary
Engineered artificial spores protect whole-cell biocatalysts for biodesulfurization, overcoming industrial challenges like extreme conditions and difficult separations for efficient sulfur removal.
Area of Science:
- Biocatalysis and Environmental Biotechnology
- Materials Science for Bio-interfaces
- Nanotechnology for Bioprocesses
Background:
- Whole-cell Pickering interfacial biocatalysis offers solutions for hydrophobic substrate mass transfer limitations.
- Industrial application is hindered by biocatalyst instability and challenging emulsion separation.
- Biodesulfurization processes face limitations in stability and recovery.
Purpose of the Study:
- To develop an artificial spore system for robust whole-cell biodesulfurization.
- To enhance biocatalyst stability and simplify post-reaction separation.
- To enable efficient and scalable desulfurization of hydrophobic substrates.
Main Methods:
- Sequential encapsulation of Gordonia sp. WQ-01A cells with polydopamine and oleic acid-modified magnetic nanoparticles.
- Creation of biomimetic artificial spores with protective shells and magnetic properties.
- Utilizing water-in-oil Pickering emulsions for enhanced interfacial biocatalysis.
Main Results:
- Artificial spores demonstrated significant protection against UV, organic solvents, and temperature fluctuations.
- Stable water-in-oil Pickering emulsions were formed, facilitating biodesulfurization.
- Superparamagnetic nanoparticles enabled rapid separation and catalyst recycling via magnetic fields.
- A minor initial kinetic lag was observed but compensated by enhanced stability and recovery.
Conclusions:
- The engineered artificial spore platform provides enhanced operational stability and simplified recovery for multiphase biocatalysis.
- This approach overcomes key limitations in industrial biodesulfurization, enabling scalable applications.
- The biomimetic design offers a robust solution for challenging biocatalytic processes in harsh environments.
