Antioxidant Composition for Preventing Lipid Oxidation Odor
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Solution Overview
Problem
Middle-aged and elderly individuals often experience a characteristic body odor known as 'old person smell' due to the degradation of lipid hydroperoxides in their skin, releasing compounds like 2-nonenal, which existing fragrances cannot effectively prevent or reduce.
Innovation Solution
The use of specific chemical compounds such as α-oxocarboxylic acids, their salts, thiols, sulfur-containing peptides, and ascorbic acid derivatives in personal care products and laundry care products to prevent the formation or reduce the intensity of malodorous compounds by chemically consuming organic hydroperoxides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fragrances are applied to cover-up old person smell, then the unpleasant odor is masked temporarily, but the underlying chemical compounds (2-nonenal and other lipid oxidation products) continue to form and the fragrance itself may eventually oxidize and deteriorate
Solution Approach 1:
The patent converts the harmful lipid hydroperoxides into beneficial products by using antioxidants (vitamin C, vitamin E, ferulic acid, resveratrol) to reduce them to non-odorous alcohols. This transforms the oxidation process from harmful (producing 2-nonenal) to beneficial (producing non-odorous reduced compounds), thereby eliminating the root cause rather than masking symptoms
Solution Approach 2:
The patent applies antioxidants to skin and personal care products before lipid oxidation can proceed to form malodorous compounds. By pre-establishing a protective antioxidant environment, the oxidation of skin lipids is prevented at the hydroperoxide stage, stopping the formation pathway before 2-nonenal and other unpleasant odorants are generated
2Object-affected harmful factors
If antioxidants are used to prevent lipid oxidation, then the formation of malodorous compounds is reduced, but the antioxidants themselves may degrade over time reducing their effectiveness
Solution Approach 1:
The patent combines multiple antioxidants (vitamin C, vitamin E, ferulic acid, resveratrol) into a synergistic formulation where each component supports and enhances the others. This composite antioxidant system provides more reliable and sustained protection against lipid oxidation compared to single antioxidants, as the degradation of one component is compensated by the others
Solution Approach 2:
The patent employs antioxidants that can regenerate each other through redox cycles. For example, vitamin E can be regenerated by vitamin C, creating a feedback loop that maintains antioxidant activity. This self-replenishing mechanism ensures sustained effectiveness and extends the functional life of the antioxidant system in preventing malodorous compound formation
3Object-affected harmful factors
If conventional deodorants are used to mask body odor, then the odor is temporarily covered, but they do not address the root cause (lipid hydroperoxide degradation) and may provide false security
Solution Approach 1:
Instead of masking the harmful effects of lipid oxidation with fragrances, the patent converts the harmful oxidation process into a beneficial reduction process. The antioxidants transform lipid hydroperoxides into non-odorous alcohols, directly eliminating the source of body odor rather than concealing it, providing a scientifically sound and effective solution
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
These compounds effectively mitigate the formation of malodorous aldehydes, providing a more pleasant body odor and extending the shelf life of perfumes and food products by reducing the peroxide value, thereby addressing the issue of 'old person smell' and rancidity.
Implementation Method 1
the chemical compounds that create the malodor are prevented from forming, reduced in intensity, and/or ameliorated... chemically consuming organic hydroperoxides
Implementation Method 2
hydrolysable esters of 2-oxoacids, glyoxylic acids, and/or oxalic acids to produce a controlled and/or extended in-situ release of a 2-oxoacid, oxalic acid monoester, or oxalic acid via chemical or enzymatic hydrolysis/cleavage
Data Source
AI summary
The various aspects presented herein relate to methods and compositions for the reduction, prevention, and/or inhibition of old person smell.