Sulfo-estolide Surfactant and Soap Stabilize Cellulase in Liquid Detergent
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Solution Overview
Problem
Liquid detergents containing enzymes face stability issues in their matrix, often requiring stabilizing agents that increase production costs and environmental impact, while maintaining high cleaning and foaming power.
Innovation Solution
A liquid detergent composition comprising sulfo-estolide surfactants, cellulase enzyme, and soap, which enhances enzyme stability and cleaning power without additional stabilizers, and includes a combination of sulfo-estolide surfactants, cellulase, and other enzymes like amylase and lipase, along with anionic and nonionic surfactants to maintain stability and foaming capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If enzyme-stabilizing agents are added to liquid detergents, then enzyme stability is improved, but production costs and environmental impact increase
Solution Approach 1:
The liquid detergent formulation uses itself as the stabilizing medium through the synergistic interaction of sulfo-estolide surfactants, soap, and cellulase enzymes. The surfactant system creates a microenvironment that naturally protects enzyme activity without requiring separate stabilizing additives, thus achieving self-stabilization.
Solution Approach 2:
The invention combines multiple components (sulfo-estolide surfactants, soap, cellulase enzymes, and other detergent ingredients) into a composite formulation where the interaction between components provides enzyme stability. This composite approach replaces the need for single-purpose enzyme stabilizers.
2Reliability
If enzyme-stabilizing agents are added to liquid detergents, then enzyme stability is improved, but environmental impact increases
Solution Approach 1:
The formulation achieves enzyme stability through its inherent composition of biodegradable surfactants and enzymes working together, eliminating the need for additional chemical stabilizers that could have negative environmental effects.
Solution Approach 2:
The invention optimizes the concentration ranges of sulfo-estolide surfactants (0.5-40% by weight) and other components to achieve maximum enzyme stability within environmentally safe parameters, avoiding excessive use of any single ingredient.
3Power
If sulfo-estolide surfactant concentration is increased, then cleaning power is improved, but foaming capabilities may be affected
Solution Approach 1:
The invention combines sulfo-estolide surfactants with traditional soap and other surfactant components to create a composite surfactant system. This combination allows the formulation to achieve high cleaning power through the sulfo-estolide component while the other components maintain adequate foaming properties.
Solution Approach 2:
The invention specifies optimized concentration ranges for sulfo-estolide surfactants (0.5-40% by weight, with preferred ranges of 1-35%, 2-30%, 3-25%, 4-20%, 5-15%, and particularly 7.5-11.5%) that balance cleaning power enhancement with maintenance of foaming capabilities.
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 composition ensures stable enzyme performance and improved cleaning power, including inhibition of graying, without the need for additional stabilizers, while maintaining environmental friendliness and high foaming capabilities.
Implementation Method 1
the combination of sulfo-estolide-surfactants with soap and cellulase enzymes leads to a liquid composition in which the cleaning power of the enzymes is increased
Implementation Method 2
liquid detergent compositions further containing enzymes from other groups... the cleaning power and the inhibition of graying of the cellulase are also improved
Implementation Method 3
Sulfo-estolide surfactants and light duty liquid detergents containing them are known in the art. These surfactants have good cleaning and foaming capabilities
Implementation Method 4
The liquid detergent composition comprises: a) 0.5 to 40 % by weight of the total composition of at least one sulfo-estolide surfactant... combination of sulfo-estolide surfactants, soap and cellulase enzyme(s)
Data Source
AI summary
Liquid detergent compositions, comprising 0.5 to 40 % by weight of the total composition of at least one sulfo-estolide surfactant having the following general formula (I), wherein one of X and Y is SO3 - Z+, the other of X and Y is H, and X and Y are independently assigned in each repeating unit; n is an integer from 1 to 30; A1 and A2 are linear or branched, saturated or unsaturated, substituted or un-substituted alkyl diradicals wherein the total number of carbon atoms for each repeating unit is independent and in the range of C8 to C22; a is 0, 1 or 2 and is independently assigned in each repeating unit; R is linear or branched, saturated or unsaturated, substituted or un-substituted hydrocarbon wherein the total number of carbon atoms is from 1 to 24; W is H or a monovalent or divalent metal cation, ammonium cation, substituted ammonium cation, or an alkyl or substituted alkyl group; and Z is H or a monovalent or divalent metal cation, ammonium cation, substituted ammonium cation, or an alkyl or substituted alkyl group; at least one cellulase enzyme and a soap to provide high enzyme stability even without added stabilizing agents and are environmentally friendly and have high cleaning power.