Comparison between Lipase Performance Distributed at the O/W Interface by Membrane Emulsification and by Mechanical...

Area of Science:

• Biotechnology and Pharmaceutical Sciences
• Chemical Engineering
• Enzyme Catalysis

Background:

• Multiphase bioreactors utilize interfacial biocatalysts for reactions at liquid-liquid interfaces.
• Microdroplet formation enhances mass transfer in these systems.
• Membrane emulsification offers precise control under mild conditions for stable bioactive components.

Purpose of the Study:

• To produce a microstructured emulsion bioreactor using membrane emulsification with lipase as both catalyst and surfactant.
• To compare the catalytic performance of lipase in membrane-emulsified systems versus stirred systems.
• To investigate the kinetic resolution of (S,R)-naproxen methyl ester using lipase.

Main Methods:

• Utilized membrane emulsification technology for producing microstructured emulsion bioreactors.
• Employed lipase from Candida rugosa for the kinetic resolution of (S,R)-naproxen methyl ester.
• Evaluated and compared catalytic performance in a stirred tank reactor against a stirred method.

Main Results:

• Lipase exhibited maximum enantioselectivity (100%) and conversion using the membrane emulsification technique.
• Uniform and stable droplets allowed for precise evaluation of enzyme distribution and specific activity at the oil/water interface.
• Hydrodynamic radius of the enzyme at the interface was estimated under optimal enantioselectivity conditions.

Conclusions:

• Membrane emulsification is a superior method for producing biocatalytic microdroplets, leading to enhanced enzyme performance.
• The technique enables precise control over droplet characteristics, facilitating detailed analysis of enzyme behavior at interfaces.
• This approach holds significant potential for optimizing enzymatic processes in pharmaceutical and biotechnology industries.