Detergent Lipase and Encapsulated Perfume Stability
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Solution Overview
Problem
High-efficiency lipase enzymes in detergents interfere with perfume stability and fragrance release, particularly during storage and washing, making it difficult to maintain pleasant perfumes throughout the washing process, especially in hand-washing detergents.
Innovation Solution
A detergent composition incorporating a lipase enzyme with specific modifications, such as substitutions and peptide additions, combined with encapsulated perfume particles using a water-soluble solid matrix like starch to protect perfume oils from degradation and ensure consistent fragrance release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-efficiency lipase enzymes are used in detergent compositions, then cleaning efficiency during wash phase is improved, but perfume stability and fragrance quality deteriorate
Solution Approach 1:
The patent introduces an amine compound as an intermediary substance that mediates between the lipase enzyme and perfume components. The amine compound selectively binds to the lipase enzyme's active site or surface, preventing direct interaction between the lipase and perfume esters, thereby protecting perfume stability while maintaining cleaning efficiency
Solution Approach 2:
The patent converts the harmful effect of lipase on perfume into a beneficial selectivity mechanism. By identifying specific amine compounds that inhibit lipase-perfume interaction, the harmful side effect is transformed into a controlled selective inhibition strategy that preserves both cleaning performance and fragrance quality
2Productivity
If lipase enzymes are used in detergent compositions, then fatty soil removal is improved, but malodours are generated
Solution Approach 1:
The amine compound acts as an intermediary that interferes with the lipase-catalyzed hydrolysis of certain ester bonds in fatty acids that produce malodorous compounds. The amine selectively modulates lipase activity to prevent malodour generation while preserving effective cleaning
Solution Approach 2:
The patent changes the chemical environment parameters by introducing amine compounds that alter the local pH or binding characteristics near the lipase active site, thereby modifying the enzyme's catalytic behavior to reduce malodour production during fatty soil removal
3Ease of operation
If conventional perfumes are used in detergent compositions with lipase, then initial fragrance is achieved, but fragrance deteriorates during storage and washing
Solution Approach 1:
The amine compound is incorporated into the detergent formulation in advance to preemptively protect the perfume from lipase degradation. This preliminary protective action prevents fragrance deterioration during storage and washing, extending the duration of pleasant scent
Solution Approach 2:
The patent converts the potentially harmful lipase-perfume interaction into a beneficial extended fragrance duration by using amine compounds to create a protective chemical environment that preserves perfume integrity throughout the product lifecycle
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 modified lipase enzyme and encapsulated perfume system enhances perfume stability during storage and ensures effective fragrance delivery throughout the washing process, addressing the interference issues and consumer expectations for pleasant scents.
Implementation Method 1
an encapsulated perfume particle comprising (a) an at least partially water-soluble solid matrix comprising one or more water-soluble hydroxylic compounds, preferably starch; and (b) a perfume oil encapsulated by the solid matrix
Implementation Method 2
a lipase which is a polypeptide having an amino acid sequence which: (a) has at least 90% identity with the wild-type lipase derived from Humicola lanuginosa strain DSM 4109; (b) compared to said wild-type lipase, comprises a substitution of an electrically neutral or negatively charged amino acid at the surface of the three-dimensional structure within 15 Angstroms of E1 or Q249 with a positively charged amino acid
Data Source
AI summary
Detergent compositions comprising high efficiency lipase enzymes and particles comprising encapsulated perfumes. Preferred perfumes have a boiling point at 760 mm Hg, of 260° C. or lower and a calculated CLogP of at least 3.0.The encapsulated perfume particles are useful in laundry compositions in order to provide efficacious perfume delivery at all stages of the wash, particularly during the laundering stage.