Peroxyhemiacetal Profragrant Compounds for Stimuli-Responsive Aldehyde Release
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Solution Overview
Problem
The flavors and fragrance industry seeks a precursor compound that can release flavors and fragrances in response to various stimuli such as light, water, air, heat, pH, and oxidation, but existing solutions are limited in their ability to effectively control and enhance odoriferous and aromatic properties over time.
Innovation Solution
The use of peroxyhemiacetal compounds, specifically those of Formula I, which include terpene hydroperoxyl groups and alkyl groups, to release aldehydes like decanal, octanal, and acetaldehyde in aqueous solutions, enhancing the delivery of fragrances and flavors by dissociating in response to environmental changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing precursor compounds (acetal, ketal) are used to release flavors and fragrances, then the release can be controlled to some extent, but the ability to respond to multiple stimuli (light, water, air, heat, pH, oxidation) is limited
Solution Approach 1:
The invention combines a terpene hydroperoxide component with an aldehyde component to create a composite pro-fragrance compound (peroxyhemiacetal). This composite structure enables the molecule to respond to multiple stimuli including oxidation, heat, and pH changes, while maintaining controlled release of the aldehyde fragrance. The synergistic interaction between the hydroperoxide and aldehyde moieties provides both multi-stimuli responsiveness and reliable controlled release.
Solution Approach 2:
The invention utilizes changes in physical and chemical parameters (temperature, pH, oxidation state) to trigger controlled release of the fragrance. The peroxyhemiacetal compound undergoes decomposition or rearrangement when exposed to these parameter changes, converting the stored chemical energy into fragrance release. This allows the system to respond adaptively to environmental conditions while maintaining controlled release through the specific reaction kinetics of the hydroperoxide-aldehyde adduct.
2Duration of action of moving object
If pro-fragrance compounds are designed to release flavors and fragrances over time, then the duration of action is extended, but the intensity and effectiveness of odoriferous and aromatic properties may be reduced
Solution Approach 1:
The peroxyhemiacetal compound provides periodic fragrance release through its decomposition kinetics. As the compound gradually breaks down over time through oxidation, heat, or pH-triggered reactions, it releases aldehyde molecules in a sustained manner. This periodic release mechanism maintains both extended duration and effective intensity, as the decomposition continuously generates fresh fragrance molecules rather than depleting a static reservoir.
Solution Approach 2:
The pro-fragrance compound is self-activating through its inherent chemical instability. The terpene hydroperoxide-aldehyde adduct spontaneously decomposes or rearranges under ambient conditions (oxidation, moisture, heat), eliminating the need for external activation systems. This self-service mechanism ensures both extended duration through gradual decomposition and maintained effectiveness through continuous generation of active fragrance molecules.
3Stability of the object's composition
If precursor compounds are used to deliver aldehydes, then the stability of the composition is improved, but the complexity of controlling release in response to various environmental conditions increases
Solution Approach 1:
The invention extracts the reactive parts (aldehyde and hydroperoxide) into a stable adduct form (peroxyhemiacetal). By combining these reactive components into a single stable precursor molecule, the system achieves composition stability during storage and transport. The controlled release is then achieved through the spontaneous decomposition of this stable adduct, eliminating the need for complex external control mechanisms while maintaining responsiveness to environmental stimuli.
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 peroxyhemiacetal compounds effectively release aldehydes over time, enhancing the odoriferous and aromatic properties of perfuming and flavoring compositions, as demonstrated by headspace gas chromatography-mass spectrometry, suitable for applications in laundry detergents, beverages, and confectionary products.
Implementation Method 1
the claimed peroxyhemiacetals can dissociate to release an aldehyde in polar or aqueous media
Data Source
Figure 1~2
Figure 3~4
AI summary
Provided herein is a compound of Formula (I), wherein R represents a terpene hydroperoxyl selected from the group consisting of (AA), (BB), (CC), (DD), wherein R' represents a alkyl group selected from the group consisting: CH3(CH2)8-, CH3(CH2)6-, and CH3-.