Protein–Polysaccharide Microparticles for Stable Emulsion Formation
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Solution Overview
Problem
Existing methods for producing emulsions lack stability over time, necessitating the development of simple and inexpensive methods that utilize water-soluble or water-dispersible microparticles as emulsifiers.
Innovation Solution
A method involving the preparation of a solution or dispersion containing a protein and an anionic polysaccharide at a pH higher than the protein's isoelectric point, followed by adjusting the pH closer to the isoelectric point to produce microparticles that adhere to oil droplets, stabilizing the emulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional emulsifying methods are used, then emulsions can be produced, but they lack stability over time
Solution Approach 1:
The invention changes the pH parameter from above the isoelectric point to the isoelectric point or lower, which causes the protein to precipitate and form microparticles with emulsifying properties. This parameter change transforms soluble protein into insoluble microparticles that provide stable emulsion over time.
Solution Approach 2:
The invention utilizes the phase transition of protein from dissolved state to precipitated microparticle state by adjusting pH to the isoelectric point. This phase transition creates solid microparticles that serve as stable emulsifiers, resolving the contradiction between emulsion formation and long-term stability.
2Reliability
If new emulsifying methods are developed to improve stability, then emulsion stability improves, but the methods become more complex
Solution Approach 1:
The invention allows the protein to self-assemble into microparticles through pH adjustment alone, without requiring complex equipment or additional agents. The protein's own properties at the isoelectric point drive the formation of stable microparticles, simplifying the overall method while achieving excellent stability.
Solution Approach 2:
By simply changing the pH parameter to the isoelectric point, the invention achieves microparticle formation and emulsion stability without introducing complex procedures, equipment, or additional materials, thus resolving the contradiction between stability improvement and method complexity.
3Quantity of substance
If protein concentration is increased to improve microparticle formation, then microparticle yield increases, but the cost and complexity increase
Solution Approach 1:
The protein automatically forms microparticles when pH is adjusted to the isoelectric point, utilizing its own physical-chemical properties without requiring additional reagents, complex processing, or high concentrations. This self-assembly mechanism maintains production simplicity while achieving adequate microparticle yield.
Solution Approach 2:
By controlling the pH parameter rather than protein concentration, the invention achieves microparticle formation through a simple parameter adjustment that does not increase material costs or manufacturing complexity, resolving the contradiction between yield and ease of manufacture.
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 produced microparticles exhibit excellent stability, functioning as emulsifiers that maintain the emulsion's integrity against factors like salt, acid, and heat, suitable for applications in foods and industrial products.
Implementation Method 1
mixing the solution or dispersion to set the pH of the solution or dispersion to a value closer to the isoelectric point
Implementation Method 2
nanoparticles of an amphiphilic compound that exist as an independent phase in an oil/amphiphilic compound/water system and are adhered to the surface of an oil base by van der Waals force
Data Source
AI summary
A method for producing water-soluble or water-dispersible microparticles, which includes preparing a solution or dispersion that contains a protein and an anionic polysaccharide and that has a pH higher than the isoelectric point of the protein, and mixing the solution or dispersion to set the pH of the solution or dispersion to a value closer to the isoelectric point.