Whey Protein Gel Synthesis for Uniform Metal Nanoparticles
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Solution Overview
Problem
Existing methods for producing metal and metal oxide nanoparticles result in large size distributions (high polydispersity) and use environmentally unfriendly synthetic polymers, such as ethylene glycol.
Innovation Solution
A method involving the use of a metal salt, a metal chelating agent, whey protein or whey polypeptide, and optionally a reducing saccharide in a solvent, followed by heating and evaporating to form a gel, which then forms metal or metal oxide nanoparticles within the gel, utilizing whey proteins to create a confinement matrix for uniform particle formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a common sol-gel method using synthetic polymer gels (e.g., ethylene glycol) is used to produce metal oxide nanoparticles, then the synthesis process can be completed, but the resulting particles have relatively large size distribution (high polydispersity) and the use of synthetic polymers is not environmentally friendly
Solution Approach 1:
The patent changes the chemical composition parameters of the gel matrix by replacing synthetic polymers with natural polymers (whey protein, gelatin, albumin). This parameter change achieves both uniform particle size distribution and environmental friendliness, as the natural polymer gels provide controlled confinement spaces that limit particle growth while being biodegradable and non-toxic
Solution Approach 2:
The patent uses natural polymers that are biodegradable and environmentally friendly, replacing persistent synthetic polymers. These natural polymer gels serve their purpose during nanoparticle formation and then decompose, eliminating environmental pollution issues associated with synthetic polymer waste
2Manufacturing precision
If a common sol-gel method using synthetic polymer gels is used to produce metal oxide nanoparticles, then the synthesis process can be completed, but the resulting particles have relatively large size distribution (high polydispersity)
Solution Approach 1:
The patent modifies the gel formation parameters by using natural polymers with specific molecular weights and structures (whey protein, gelatin, albumin) that naturally provide uniform confinement spaces. This parameter change simplifies the process by eliminating the need for complex synthetic polymer synthesis while achieving high particle size uniformity
Solution Approach 2:
The patent achieves homogeneous particle size distribution by using natural polymers that provide uniform confinement spaces throughout the gel matrix. The natural structure of these polymers ensures consistent spacing and similar confinement conditions, leading to homogeneous nanoparticle formation without requiring complex process controls
3Object-affected harmful factors
If whey protein or whey polypeptide is used to form a gel matrix for nanoparticle production, then environmentally friendly and biocompatible nanoparticles are produced, but the method must be extended to metallic nanoparticles as well
Solution Approach 1:
The patent demonstrates the universality of the whey protein gel method by applying it to produce both metal oxide nanoparticles (ZnO, TiO2, Fe2O3) and metallic nanoparticles (Au, Ag, Cu). The same natural polymer gel matrix and general sol-gel approach work for different metal types, achieving environmental friendliness across multiple nanoparticle applications
Solution Approach 2:
The patent adapts the method to different nanoparticle types by adjusting chemical parameters such as metal salt selection, reducing agent type, and heating conditions. These parameter changes allow the same whey protein gel framework to produce various metal and metal oxide nanoparticles with uniform size distributions
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
This method produces nanoparticles with highly uniform sizes, less than 0.1% deviation from the average, and is environmentally friendly, providing biocompatible nanoparticles suitable for various applications.
Implementation Method 1
heating and evaporating the solvent from said mixture to form a gel
Implementation Method 2
mixing a metal salt, a metal chelating agent, a whey protein or whey polypeptide and optionally a reducing saccharide in a solvent
Implementation Method 3
heating and evaporating the solvent from said mixture to form a gel, thereby forming metal or metal oxide nanoparticles within the gel
Implementation Method 4
whey proteins to create a confinement matrix for uniform particle formation
Implementation Method 5
mixing a metal salt, a metal chelating agent, a whey protein or whey polypeptide and optionally a reducing saccharide in a solvent
Data Source
AI summary
The invention provides a method of producing a metal or metal oxide nanoparticle comprising mixing a metal salt, a metal chelating agent, a whey protein and a reducing saccharide in a solvent; heating and evaporating the solvent from said mixture to form a gel, thereby forming metal or metal oxide nanoparticles within the gel.