Protease Activator-Stabilizer Compositions for High-Temperature Cleaning
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Solution Overview
Problem
Enzymes, particularly proteases, are unstable at high temperatures, limiting their use in cleaning applications such as ware washing, as they denature or decompose at temperatures above 140°F to 150°F, leading to reduced effectiveness and shelf stability issues in enzyme-based detergent formulations.
Innovation Solution
The use of organic activator-stabilizers, including heat-deactivated enzymes and zwitterionic materials like amphoteric surfactants and amino acids, to prevent deactivation and enhance the stability and activity of proteases at temperatures exceeding 150°F, allowing their effective use in high-temperature cleaning conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If proteases are used for cleaning at high temperatures, then cleaning efficacy is improved, but enzyme stability deteriorates due to denaturation and decomposition
Solution Approach 1:
The patent introduces organic activator-stabilizer compounds as intermediary substances that mediate between the protease enzyme and the high-temperature environment. These compounds form protective complexes with the enzyme, shielding it from thermal denaturation while allowing catalytic activity to proceed. The activator-stabilizers act as a buffer layer that maintains enzyme structure integrity at temperatures above 150°F.
Solution Approach 2:
The patent modifies the chemical environment parameters by adding organic activator-stabilizer compounds that change the local microenvironment around the enzyme. This alters the temperature threshold for denaturation and shifts the stability profile of the protease, enabling it to function at higher temperatures than normally possible. The parameter change involves transitioning from a standard aqueous environment to one enriched with stabilizing organic compounds.
2Productivity
If enzyme concentration is increased to improve cleaning performance, then soil removal capability is enhanced, but shelf stability deteriorates due to proteolysis and decomposition
Solution Approach 1:
The organic activator-stabilizer compounds serve as intermediary protective agents that form stable complexes with protease enzymes during storage. This prevents spontaneous proteolysis and decomposition reactions that would otherwise occur even at low temperatures over extended storage periods. The mediator compounds maintain enzyme integrity throughout the shelf life of the detergent formulation.
Solution Approach 2:
The patent applies beforehand cushioning by incorporating stabilizer compounds into the detergent formulation in advance, before the enzyme is exposed to damaging conditions during storage or use. These pre-positioned stabilizers create a protective environment that cushions the enzyme against thermal, chemical, and enzymatic degradation throughout its lifecycle in the product.
3Productivity
If detergent formulations are made more concentrated to improve cleaning power, then cleaning efficacy is enhanced, but enzyme stability deteriorates due to increased degradation rates
Solution Approach 1:
The patent changes the chemical composition parameters of the detergent formulation by incorporating organic activator-stabilizer compounds. This modifies the overall formulation parameters to create a more enzyme-friendly environment even at higher concentrations. The stabilizers counteract the increased degradation rates that would normally result from higher concentrate levels.
Solution Approach 2:
The patent creates a composite detergent system that combines protease enzymes with organic activator-stabilizer compounds in a synergistic formulation. This composite material approach allows the detergent to maintain high cleaning power through concentrated active ingredients while the stabilizer component protects the enzyme from degradation, resolving the contradiction between concentration and stability.
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
This approach enables the use of proteases and other thermally labile enzymes at temperatures above 150°F, maintaining their performance and extending their stability, thereby overcoming previous temperature limitations and enhancing cleaning efficacy in ware wash applications.
Implementation Method 1
organic activator-stabilizers prevent the deactivation of enzymes at temperatures in excess of at least 150° F.
Implementation Method 2
Enzymes break down soils making them more soluble and enabling surfactants to remove them from a surface
Implementation Method 3
enabling surfactants to remove them from a surface
Data Source
AI summary
Methods for use of select organic compounds for the activation and stabilization of thermally labile enzymes, including proteases, are disclosed. The invention further relates to compositions of certain organic compounds with enzymes to enable the use of such enzymes at high temperature conditions, such as for warewash temperatures and conditions. In particular, organic activator-stabilizers including heat-deactivated proteases and zwitterionic materials are combined with enzymes according to the invention. As a result, the invention provides enzyme cleaning efficacy for various high temperature conditions, including warewash applications.