Nitrone Phenolic Antioxidant Regenerative Radical Scavenging
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Solution Overview
Problem
Current antioxidants in personal care compositions are inadequate in preventing collagen degradation and oxidative stress caused by free radicals, leading to premature skin aging, as they are consumed by radicals and lack regenerative mechanisms.
Innovation Solution
Development of nitrone compounds with phenolic functionalities that act as radical scavengers, inhibiting collagen degradation and providing anti-aging benefits by regeneratively consuming free radicals, offering superior antioxidant performance compared to conventional antioxidants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antioxidants are used to protect skin from free radicals, then antioxidant protection is provided, but the antioxidants are consumed sacrificially and lack regenerative mechanisms, leading to shorter duration of protection
Solution Approach 1:
The patent changes the chemical structure of antioxidants by incorporating both nitrone and phenolic functionalities into a single molecule. This structural parameter change enables the antioxidant to undergo a regenerative mechanism where the nitrone group scavenges radicals to form a nitrone radical, which is then reduced back to the active nitrone form by the phenolic group. This cyclic regeneration allows the antioxidant to continuously scavenge radicals without being consumed, thereby extending the duration of antioxidant protection while maintaining reliable protection efficacy.
2Duration of action of moving object
If higher concentrations of conventional antioxidants are used to extend protection duration, then longer antioxidant protection is achieved, but the formulation requires higher amounts of antioxidant substance
Solution Approach 1:
The patent implements a self-service mechanism within the antioxidant molecule itself. The phenolic functional group acts as an internal regenerating agent that reduces the nitrone radical back to the active nitrone form after radical scavenging. This self-regeneration capability allows the antioxidant to maintain its protective function over extended periods without requiring additional antioxidant substance to be added to the formulation, thus achieving longer protection duration with the same or lower quantity of antioxidant.
3Adaptability or versatility
If multiple separate antioxidants (one with phenolic functionality and one with nitrone functionality) are used, then both functionalities are present, but the synergistic regenerative effect cannot be achieved
Solution Approach 1:
The patent merges the nitrone and phenolic functional groups into a single molecular structure, creating a unified antioxidant compound where both functionalities are covalently bonded and spatially integrated. This merging enables direct interaction between the two groups, allowing the phenolic group to efficiently reduce the nitrone radical formed during radical scavenging. The close proximity and direct chemical connection between the two functional groups within the same molecule create a synergistic regenerative effect that cannot be achieved when the functional groups are present in separate molecules, thereby enhancing the reliability and performance of the antioxidant system.
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 nitrone compounds with phenolic functionalities demonstrate enhanced antioxidant efficacy, providing longer-lasting protection and reducing oxidative damage, thereby effectively inhibiting collagen degradation and visible signs of aging, such as wrinkles and loss of skin elasticity.
Implementation Method 1
nitrone compounds of formula I, which contain nitrone and phenolic functionalities as part of the structure, are highly effective as radical scavengers
Data Source
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AI summary
Provided are compounds and compositions thereof that are useful as antioxidants in personal care formulations. The compounds are of the formula I: wherein R, R1, R2, R3, R4, R5 and R6 are as defined herein.