Phenolic Compound Solubility via Hydrotrope Mediation
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Solution Overview
Problem
Phenolic compounds, particularly polyphenols, have limited water solubility, restricting their application in cosmetics and other uses, and existing methods to enhance solubility often come with drawbacks such as high costs, reduced activity, or compatibility issues with cosmetic formulations.
Innovation Solution
A cosmetic composition comprising at least two phenolic compounds (baicalin and resveratrol), hydrotropes (nicotinamide and caffeine), a lipid-soluble antioxidant (Vitamin E), and an emulsifier, which effectively increases the water solubility of phenolic compounds and stabilizes the antioxidant in a water-based emulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phenolic compounds are used in cosmetic formulations, then antioxidant protection is provided, but water solubility is limited
Solution Approach 1:
The patent employs hydrotropes (nicotinamide and caffeine) as intermediary substances that mediate between the hydrophobic phenolic compounds and the aqueous environment. These hydrotropes form mixed micelles or solubilization complexes that enable phenolic compounds to dissolve in water without chemical modification, maintaining their antioxidant activity while achieving sufficient solubility for cosmetic formulations.
Solution Approach 2:
The patent changes the physical-chemical parameters of the system by adjusting the concentration of hydrotropes, pH, and temperature to optimize the solubility of phenolic compounds. By controlling these parameters, the formulation achieves a balance between maintaining phenolic compound stability and achieving adequate water solubility for cosmetic application.
2Quantity of substance
If delivery systems or chemical modification are used to improve solubility, then water solubility increases, but cost increases and activity may be reduced
Solution Approach 1:
The patent uses inexpensive, readily available hydrotropes (nicotinamide and caffeine) that are already common in cosmetic formulations, rather than expensive specialized delivery systems or requiring chemical modification of the phenolic compounds. This approach achieves solubility enhancement through simple physical mixing and formulation techniques, significantly reducing manufacturing costs and complexity.
3Quantity of substance
If strong organic solvents or diterpene glycosides are used as solubilizers, then solubility improves, but safety and compatibility with cosmetic formulations deteriorate
Solution Approach 1:
The patent changes the type of solubilizing agent from harsh organic solvents to mild hydrotropes that are safe for cosmetic use. By adjusting the concentration and type of hydrotrope, the formulation achieves adequate solubility while maintaining skin compatibility and safety, eliminating the harmful effects associated with strong organic solvents.
4Reliability
If lipid-soluble antioxidants are incorporated into water-based compositions, then complete protection against oxidative stress is achieved, but emulsion stability becomes challenging
Solution Approach 1:
The patent creates a composite emulsion system that combines water-soluble phenolic compounds (solubilized by hydrotropes) with lipid-soluble antioxidants (solubilized by emulsifiers). This composite formulation integrates both types of antioxidants in a single stable water-based emulsion, providing comprehensive protection against oxidative stress while maintaining physical stability through proper emulsifier selection and formulation optimization.
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 composition significantly enhances the solubility of phenolic compounds in water, maintaining stability upon dilution and providing effective protection against oxidative stress, with synergistic antioxidant activity demonstrated in skin applications.
Implementation Method 1
The at least one hydrotrope should be present in an amount that is effective to solubilize said at least two phenolic compounds in the water phase of the composition
Implementation Method 2
The at least one emulsifier should be present in an amount sufficient to create a water-in-oil or oil-in-water emulsion that is effective to solubilize the lipid-soluble antioxidant
Implementation Method 3
Antioxidants protect cells from the damage of oxidative stress by scavenging free radicals and inhibiting following oxidation reactions
Data Source
Figure 1~2
AI summary
The present invention relates to compositions comprising: (a) at least two phenolic compounds (one flavoid and one non-flavoid); (b) at least one hydrotrope; (c) at least one emulsifier; (d) a lipid-soluble antioxidant; and (e) water. The at least one hydrotrope should be present in an amount that is effective to solubilize said at least two phenolic compounds in the water phase of the composition. The at least one emulsifier should be present in an amount sufficient to create a water-in-oil or oil-in-water emulsion that is effective to solubilize the lipid- soluble antioxidant. The compositions are useful for cosmetic purposes and other uses.