Lipolytic Enzyme Variants for Detergent Stability
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Solution Overview
Problem
Lipolytic enzymes used in detergent compositions face inhibition by surfactants and other components, limiting their effectiveness in removing oily stains.
Innovation Solution
Development of lipolytic enzyme variants with specific amino acid modifications, such as V187T, V187N, or V187H, which maintain at least 90% sequence identity to a parent enzyme, enhancing their hydrolytic activity on fatty acid esters and triglycerides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lipolytic enzymes are used in detergent compositions, then oily stains can be removed through hydrolysis of triglycerides, but the enzymes are inhibited by surfactants and other components in the cleaning composition
Solution Approach 1:
The patent applies parameter changes by modifying amino acid residues at specific positions (187, 189, 227, 233, 252, 256, 264) in the lipolytic enzyme sequence. These sequential changes create variants with improved stability and activity in detergent conditions while maintaining the ability to hydrolyze triglycerides and fatty acid esters.
2Productivity
If multiple amino acid modifications are made to improve enzyme performance, then hydrolytic activity and detergent stability are enhanced, but the complexity of enzyme development increases
Solution Approach 1:
The patent applies local quality by focusing modifications on specific positions (187, 189, 227, 233, 252, 256, 264) within the enzyme sequence rather than random modifications. This targeted approach allows systematic improvement of detergent stability and hydrolytic activity while managing development complexity through structured variant creation.
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 lipolytic enzymes exhibit improved hydrolytic activity and stability in detergent compositions, effectively removing oily stains with enhanced performance indices for hydrolysis, detergent stability, and cleaning performance.
Implementation Method 1
One mechanism by which lipolytic enzymes function is by hydrolyzing triglycerides to generate fatty acids
Data Source
AI summary
The present invention provides lipolytic enzyme variants. Specifically, the present invention provides lipolytic enzyme variants having two, three, or more modifications as compared to a parent lipolytic enzyme and having at least one improved property. In addition, the present invention provides compositions comprising a lipolytic enzyme variant of the invention. The present invention also provides methods of cleaning using compositions comprising a lipolytic enzyme variant of the invention.