Emulsion-Derived Polymeric Lattice Particles for Enzyme Immobilization
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Solution Overview
Problem
Particles used for biocatalysis and diagnostics often have inadequate surface area for enzyme immobilization, limiting their binding capacity and efficiency.
Innovation Solution
Emulsion-derived particles with a lattice of polymeric strands cross-linked by a cross-linking agent, featuring functional groups that allow for covalent, ionic, hydrophobic, and affinity bonding of proteins, enhancing their immobilization and binding capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If conventional particles are used for enzyme immobilization, then the particle structure is simple and easy to manufacture, but the surface area is inadequate for sufficient enzyme immobilization
Solution Approach 1:
The patent employs a porous polymeric lattice structure with interconnected strands forming a three-dimensional network. This porous architecture provides extensive internal surface area within the particle volume, enabling significantly higher enzyme immobilization capacity compared to conventional dense particles, while maintaining manufacturability through emulsion-based synthesis
Solution Approach 2:
The invention transitions from conventional two-dimensional surface immobilization to three-dimensional volumetric immobilization by creating a porous lattice structure. The interconnected polymeric strands form channels and cavities throughout the particle volume, allowing enzyme immobilization to occur throughout the entire particle interior rather than just on the outer surface
2Quantity of substance
If particles with high surface area are created, then enzyme immobilization capacity increases, but the manufacturing process becomes more complex
Solution Approach 1:
The emulsion-based manufacturing process is self-organizing, where droplet formation and polymeric lattice assembly occur spontaneously under controlled conditions. The cross-linking reaction automatically forms the porous structure without requiring complex post-processing steps, enabling high binding capacity particles to be manufactured through a relatively simple one-step process
Solution Approach 2:
The patent controls particle structure and binding capacity by adjusting emulsion parameters such as surfactant concentration, polymer molecular weight, cross-linker ratio, and pH. These parameter variations allow tuning of the porous lattice architecture and functional group density to achieve desired binding capacities while maintaining ease of manufacture
3Reliability
If functional groups are added for protein bonding, then binding capacity and immobilization efficiency improve, but particle stability may be compromised
Solution Approach 1:
The patent introduces functional groups locally at the polymeric lattice strands and cross-linking points rather than uniformly throughout the entire particle. This localized functionalization provides sufficient binding sites for protein immobilization while preserving the overall structural integrity and stability of the particle framework
Solution Approach 2:
The invention creates a composite structure combining the structural polymeric lattice with functional cross-linking agents containing bonding groups. This composite architecture integrates mechanical stability from the base polymer with immobilization functionality from the cross-linker, achieving both particle stability and high immobilization efficiency simultaneously
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The particles provide a high binding capacity for proteins and enzymes, allowing for optimal pH shifting and improved stability, activity maintenance, and efficient recovery, making them suitable for biocatalysis and diagnostics.
Implementation Method 1
a lattice of polymeric strands cross-linked by means of a cross-linking agent
Implementation Method 2
bonding of the proteins and/or the modified proteins to the polymer can be effected through one or more of covalent bonding
Implementation Method 3
ionically bonded to the polymer, this may be achieved by positively or negatively charged functional groups on the polymer, ionically binding with oppositely charged amino acid residues on the protein
Implementation Method 4
hydrophobically bound to the polymer, this may be achieved by aromatic or long chain alkane hydrophobic groups on the polymer binding with hydrophobic amino acid on the protein
Implementation Method 5
affinity bonded to the polymer, this may be achieved by affinity tags, such as divalent metals and/or avidin, binding a histidine or biotinylated protein
Data Source
AI summary
An emulsion-derived particle comprises a lattice of polymeric strands cross-linked by means of a cross-linking agent, and interstitial openings adjacent and around the strands. Functional groups are provided on the lattice and proteins and/or modified proteins can react with these, thereby to be bonded to the lattice and hence immobilized.