Cationic Peptide Antimicrobial Compatibility via Ion Exchange
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Solution Overview
Problem
Cationic peptide-based antimicrobials are incompatible with anionic materials, leading to a loss of antimicrobial activity and viscosity in cosmetic and food products due to charge interactions.
Innovation Solution
Treating the Lactobacillus ferment peptide extract with a strong acid cation exchange resin to alter its charged state, making it compatible with anionic surfactants and thickeners while maintaining antimicrobial activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cationic peptide-based antimicrobials are used, then antimicrobial activity is achieved, but compatibility with anionic materials is lost
Solution Approach 1:
The patent applies parameter changes by modifying the charge state of the peptide antimicrobial through ion exchange resin treatment. This transforms the peptide from a cationic form that is incompatible with anionic materials to a form with reduced or neutralized positive charge, enabling compatibility while preserving antimicrobial activity.
Solution Approach 2:
The ion exchange resin acts as an intermediary in the formulation process. It mediates between the cationic peptide and anionic materials by binding to the peptide and modifying its charge characteristics, thereby enabling the coexistence of cationic antimicrobials with anionic thickeners and surfactants in the same formulation.
2Adaptability or versatility
If cationic antimicrobials are combined with anionic thickeners, then formulation flexibility is improved, but viscosity and clarity are lost
Solution Approach 1:
The patent modifies the charge parameter of the antimicrobial peptide through ion exchange treatment, transforming it from a strongly cationic form to a form with reduced positive charge. This parameter change eliminates the electrostatic interactions that would otherwise cause precipitation and loss of viscosity/clarity when combined with anionic thickeners.
Solution Approach 2:
The patent converts the harmful charge interaction between cationic peptides and anionic thickeners into a beneficial compatibility relationship. By using ion exchange resin treatment, the harmful electrostatic attraction is eliminated, allowing the formulation to achieve both flexibility (ability to use anionic thickeners) and stability (maintained viscosity and clarity).
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 treated extract retains antimicrobial efficacy and compatibility with anionic compounds, preventing loss of viscosity and clarity, and demonstrating enhanced compatibility with anionic systems.
Implementation Method 1
treating the Lactobacillus ferment peptide extract with a strong acid cation exchange resin to alter its charged state
Data Source
AI summary
An antimicrobial composition compatible with anionic compounds is prepared by a process of contacting a cationic peptide-based antimicrobial extract with an ion exchange resin.