Cleaning composition comprising lipolytic enzyme having polyesterase activity
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Solution Overview
Problem
Current cleaning agents lack effective solutions for reducing pilling and graying effects on synthetic fibers like polyester, as existing enzymes, such as cellulases, are only applicable to cotton textiles, leaving no comparable method for synthetic fibers like polyester.
Innovation Solution
Development of a cleaning composition containing a variant lipolytic enzyme with polyesterase activity that degrades polyesters efficiently at lower temperatures, preventing pilling and graying, and maintaining fabric quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cellulases are used to reduce pilling effect, then cotton textiles benefit from antipilling effects, but synthetic fibers like polyester have no comparable solution
Solution Approach 1:
The patent modifies the chemical structure of lipolytic enzymes through site-directed mutagenesis, changing amino acid residues at specific positions to create variants with enhanced polyesterase activity. This structural parameter change enables the enzyme to effectively degrade polyester fibers, extending enzyme applicability from only cotton to include synthetic fibers like polyester.
Solution Approach 2:
The engineered lipolytic enzyme variants possess dual functionality: they maintain lipolytic activity for general cleaning while gaining polyesterase activity specifically for polyester fiber care. This multi-functionality allows a single enzyme to address pilling on both natural and synthetic fibers, replacing the need for fiber-specific enzymes.
2Productivity
If existing cleaning agents are used, then general cleaning is achieved, but pilling and graying effects on polyester remain unaddressed
Solution Approach 1:
The patent introduces engineered lipolytic enzyme variants as intermediary agents that specifically interact with polyester fibers. These enzymes act as mediators between the cleaning composition and the polyester fabric, selectively degrading pilled polyester fibers and preventing gray formation without affecting other fabric components or causing damage to the base fabric.
Solution Approach 2:
The patent replaces mechanical pilling removal methods (such as fabric shavers or manual picking) with a biochemical approach using engineered enzymes. Instead of mechanically removing pills, the lipolytic enzyme variants chemically degrade the polyester material at the pill formation sites, providing a gentler and more effective solution that also prevents gray formation.
3Duration of action of stationary object
If polyester textiles are washed multiple times, then cleaning is maintained, but pilling increases and fabric looks used faster
Solution Approach 1:
The patent applies lipolytic enzyme variants during the washing process as a preventive measure before significant pilling and gray formation occur. The enzymes continuously act on emerging polyester pills and loose fibers during each wash cycle, preventing their accumulation and the associated visual degradation, thereby extending the period during which the fabric maintains its new appearance.
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 variant lipolytic enzyme effectively reduces pilling and graying on polyester textiles, keeping fabrics looking new longer, reducing the need for frequent replacements and minimizing the CO2 footprint by extending the use of polyester fabrics.
Implementation Method 1
Some of these enzymes are being investigated for use in a number of industrial applications, such as detergents for laundry and dishwashing applications. The use of such enzymes is of particular interest for hydrolyzing polyesters, such as polyethylene terephthalate (PET).
Implementation Method 2
Various enzymes, such as lipolytic enzymes, are able to catalyze the hydrolysis of a variety of polymers, including polyesters.
Data Source
AI summary
The present invention relates to cleaning compositions comprising at least one lipolytic enzyme, more particularly at least one lipolytic enzyme that has improved stability and/or improved hydrolytic activity on a polyester. In this respect, the present invention relates to cleaning compositions comprising at least one lipolytic enzyme having polyesterase activity. The cleaning compositions described herein are suitable for use in cleaning processes and include detergent compositions, such as laundry detergent compositions, in particular liquid laundry detergent compositions. The present invention further relates to a method for cleaning textiles and to the use of the cleaning composition according to the invention for removing stains. Furthermore, the invention is directed to the use of a lipolytic enzyme having polyesterase activity to reduce pilling effects and prevent graying in an agent.