Modified Lipase Enzymes for Fatty Stain Removal
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Solution Overview
Problem
Current cleaning and fabric care compositions face challenges in effectively removing fatty stains due to the need for lipases with improved activity, temperature and pH profiles, stability against proteases, and reduced surfactant usage, while maintaining odorlessness.
Innovation Solution
Development of genetically engineered lipase enzymes with specific amino acid sequence modifications, such as substitutions at positions 23, 33, 82, 83, 85, 199, 254, 255, 256, 258, 263, 264, 265, 268, and 311, which provide enhanced lipase activity, stability, and reduced surfactant requirements when used in detergent formulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If genetically engineered lipase enzymes with specific amino acid modifications are used, then lipase activity and stability are improved, but enzyme production complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying specific amino acid residues at defined positions (23, 33, 82, 83, 85, 199, 254, 255, 256, 258, 263, 264, 265, 268, 311) in the lipase enzyme sequence. These targeted substitutions alter the enzyme's physical and chemical properties to enhance activity and stability without requiring complete redesign of the enzyme structure, thus improving reliability while controlling production complexity.
Solution Approach 2:
The invention implements local quality by making site-specific amino acid modifications at particular positions within the lipase sequence rather than global changes. This approach allows precise optimization of specific functional regions (such as substrate binding sites or structural stability regions) while maintaining the overall enzyme architecture, thereby improving performance with minimal increase in production complexity.
2Productivity
If higher lipase activity is achieved through genetic engineering, then stain removal performance improves, but manufacturing cost increases
Solution Approach 1:
The patent uses parameter changes by substituting specific amino acids at key positions to optimize catalytic efficiency and substrate binding. These targeted modifications enhance stain removal performance by improving the enzyme's ability to hydrolyze fatty stains, while the limited scope of changes (specific positions only) keeps manufacturing costs relatively low compared to complete enzyme redesign.
Solution Approach 2:
The invention employs copying by using the wild-type lipase sequence as a template and making targeted copies with specific amino acid substitutions. This approach allows replication of the successful enzyme structure with optimized regions, reducing research and development costs while improving productivity through iterative refinement rather than de novo design.
3Object-affected harmful factors
If reduced surfactant usage is implemented, then environmental friendliness improves, but cleaning effectiveness may worsen
Solution Approach 1:
The patent applies parameter changes by modifying the lipase enzyme's amino acid sequence to enhance its catalytic efficiency and ability to function in low-surfactant environments. These changes improve the enzyme's intrinsic cleaning power, allowing reduced surfactant usage without compromising cleaning effectiveness, thus resolving the contradiction between environmental friendliness and performance.
Solution Approach 2:
The invention implements self-service by engineering the lipase enzyme to be more autonomous and effective in performing its cleaning function without heavy reliance on surfactants. The modified enzyme can independently hydrolyze fatty stains more efficiently, reducing the need for additional chemical assistants (surfactants) and thereby improving environmental friendliness while maintaining cleaning effectiveness.
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 enzymes demonstrate improved stain removal performance, increased stability, and reduced surfactant usage, effectively addressing the limitations of existing lipases in harsh cleaning environments.
Implementation Method 1
Lipases have been employed in the removal of fatty stains
Data Source
AI summary
A method for removing a stain from a surface using lipase enzymes, and a formulation comprising a lipase enzyme.