Moderate pH Powder Detergent with Engineered Protease
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Solution Overview
Problem
Conventional powder detergents operate at high alkaline pH values, limiting the effectiveness of proteases at lower pH conditions commonly desired for laundry and dishwashing.
Innovation Solution
Development of moderate pH powder detergent compositions incorporating specific protease variants, such as those with mutations like S99D+S103A+V104I+G160S, which maintain proteolytic activity and improve cleaning performance at pH levels below 9.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional powder detergents use high alkaline pH values (above 9), then protease stability is improved, but cleaning performance at lower pH conditions deteriorates
Solution Approach 1:
The invention changes the pH parameter of the detergent composition from conventional high alkaline (above 9) to moderate pH (below 9), while using protein-engineered protease variants that have been specifically modified to maintain both stability and activity at this lower pH level
Solution Approach 2:
The invention uses dynamically engineered protease variants with modified amino acid sequences that adapt the enzyme's properties to function optimally at moderate pH levels, balancing both stability and catalytic activity in the new pH environment
2Productivity
If proteases are designed for optimal function at high pH, then alkaline condition performance is improved, but effectiveness at lower pH values deteriorates
Solution Approach 1:
The invention modifies the operating pH parameter from high alkaline to moderate pH, and concurrently engineers protease variants with altered amino acid sequences that shift the enzyme's pH activity profile to match the new operating conditions
Solution Approach 2:
The invention performs preliminary protein engineering of the protease variants before use, introducing specific amino acid mutations that pre-adapt the enzyme to function effectively at moderate pH levels, ensuring both stability and activity are optimized for the target application
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 protease variants in these compositions demonstrate enhanced cleaning performance at lower pH values, providing improved wash results compared to traditional high-pH detergents.
Implementation Method 1
Proteases are enzymes that catalyze the hydrolysis of peptide bonds in proteins. The protease variants in these compositions demonstrate enhanced cleaning performance at lower pH values
Data Source
AI summary
The invention relates to moderate pH and optionally low conductivity powder detergent compositions comprising a protease.