Acylhydrazone Bleaching with Protease for Low-Temperature Stain Removal
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Solution Overview
Problem
Conventional bleaching agents based on active oxygen exhibit limited performance at low temperatures, and increasing bleaching agent concentrations can reduce the effectiveness of enzymes like protease and lipase, leading to reduced stain removal efficiency.
Innovation Solution
The use of specific proteases with defined amino acid sequences, such as those with 98.5% identity to SEQ ID NO:1 or 70-99% identity to SEQ ID NO:2, in combination with acylhydrazones, enhances bleaching performance even at low temperatures by improving the removal of protein and fat-containing stains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the amount of bleach is increased to improve bleaching performance, then bleaching efficiency is improved, but the performance of enzymes such as protease and lipase is reduced
Solution Approach 1:
The patent introduces acylhydrazones as intermediary compounds that facilitate bleaching at lower temperatures without requiring high concentrations of bleach. These compounds act as mediators between the bleaching agent and the substrate, enabling effective bleaching while preserving enzyme activity by reducing the need for harsh bleaching conditions
Solution Approach 2:
The patent changes the temperature parameter by optimizing formulations for low-temperature washing (30°C or lower). By modifying the chemical parameters through the use of acylhydrazones and specific protease-lipase combinations, the system achieves effective bleaching and stain removal at temperatures where conventional high-bleach formulations would be ineffective or damaging to enzymes
2Use of energy by moving object
If washing temperature is lowered to save energy, then energy consumption is reduced, but bleaching performance is limited
Solution Approach 1:
The patent fundamentally changes the temperature parameter by developing formulations specifically optimized for low-temperature operation (30°C or lower). The chemical composition is modified to include acylhydrazones and specific enzyme combinations that maintain high bleaching and stain removal performance at these reduced temperatures, eliminating the need for high-temperature processing
Solution Approach 2:
The patent creates a composite formulation system combining acylhydrazones with specific protease and lipase enzymes. This composite material works synergistically to provide both bleaching and stain removal functions at low temperatures, where neither component would be fully effective alone. The composite formulation overcomes the limitations of conventional single-component systems
3Use of energy by moving object
If conventional bleaching agents are used at low temperatures, then energy consumption is reduced, but bleaching performance remains limited
Solution Approach 1:
The patent changes the chemical parameters of the bleaching system by introducing acylhydrazones that are specifically effective at low temperatures. This parameter change allows the system to maintain high bleaching performance at 30°C or lower, whereas conventional bleaching agents would require higher temperatures to achieve similar results
Solution Approach 2:
The patent creates a simplified version of high-temperature bleaching performance that works at low temperatures. By using acylhydrazones as a substitute for high-temperature activation, the system copies the effective bleaching outcome without requiring the high-temperature condition, thereby reducing energy consumption while maintaining performance
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 combined use of these proteases and acylhydrazones significantly enhances bleaching performance, particularly at low temperatures, resulting in improved stain removal and increased bleaching efficiency compared to using either component alone.
Implementation Method 1
Proteases are enzymes that catalyze the hydrolysis of amide bonds in protein substrates
Implementation Method 2
The bleach-enhancing effect of acylhydrazones is known from international patent applications
Implementation Method 3
Conventional active oxygen-based bleaching agents perform well at application temperatures of 40°C and above
Data Source
AI summary
The problem addressed by the invention is that of improving the bleaching power of acylhydrazones in detergents and cleaning agents that contain peroxygen. This was achieved through the use of a protease.