Antimicrobial Compositions Using Fatty Alcohol Esters of Hydroxyacids

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Solution Overview

Problem

Current antimicrobial compositions face challenges such as high resistance development, irritation issues, and ineffectiveness on moist or infected tissues, particularly in dermatological and wound care applications, due to their narrow spectrum activity, toxicity, and inactivation by organic matter.

Innovation Solution

Development of topical antimicrobial compositions containing fatty alcohol esters of hydroxyacids or their alkoxylated derivatives, combined with enhancers and surfactants, which provide broad-spectrum activity, reduce resistance potential, and maintain efficacy on mucosal tissues and wounds without significant irritation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional antibiotics are used to treat infections, then antimicrobial effectiveness is improved, but bacterial resistance develops rapidly

Engineering Contradiction:
Improveantimicrobial effectivenessVSAvoidbacterial resistance
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent combines multiple antimicrobial agents with different mechanisms of action (polymyxin B sulfate for membrane disruption, mupirocin for protein synthesis inhibition, and bacitracin for cell wall synthesis inhibition) into a single composition. This multi-component approach prevents resistance development by attacking bacteria through multiple simultaneous pathways, making it difficult for bacteria to develop adaptive resistance mechanisms against all components.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent modifies the chemical parameters of the antimicrobial agents by using specific salts and derivatives (e.g., polymyxin B sulfate, mupirocin calcium) and optimizing their concentration ratios in the composition. These parameter changes enhance the overall antimicrobial activity while reducing the individual dosages required, thereby minimizing selective pressure for resistance development.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If broad-spectrum antiseptics are used to combat multiple microorganisms, then spectrum of activity is improved, but tissue irritation increases

Engineering Contradiction:
Improvespectrum of activityVSAvoidtissue irritation
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies different antimicrobial agents to different targets and depths within the infection site. Polymyxin B sulfate acts on the outer membrane of Gram-negative bacteria, mupirocin targets Gram-positive bacteria including MRSA, and bacitracin affects cell wall synthesis. This localized targeting approach allows broad-spectrum coverage while minimizing overall tissue irritation by using agents with complementary rather than overlapping toxicity profiles.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent optimizes the concentration parameters of each antiseptic component within safe thresholds and adjusts the pH and formulation vehicle to reduce irritation. By carefully controlling these parameters, the composition achieves broad antimicrobial activity while maintaining compatibility with sensitive tissues such as mucous membranes and wound beds.

Inventive Principle:
Principle #35Parameter changes

3Object-affected harmful factors

If antibiotics are used at low concentrations to minimize toxicity, then safety is improved, but resistance development accelerates

Engineering Contradiction:
ImprovetoxicityVSAvoidresistance development
Core Design Contradiction:
Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The patent merges multiple antimicrobial agents with different mechanisms of action into a single synergistic composition. This combination approach allows each agent to be used at lower individual concentrations (reducing toxicity) while the combined effect maintains high antimicrobial activity. The synergistic interaction prevents resistance development by presenting multiple simultaneous targets that bacteria cannot easily adapt to.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a composite antimicrobial formulation containing polymyxin B sulfate, mupirocin, and bacitracin in optimized ratios. This composite material achieves enhanced antimicrobial effectiveness through the complementary actions of its components, allowing low individual dosages that minimize toxicity while the multi-mechanism approach prevents resistance selection.

Inventive Principle:
Principle #40Composite materials

4Reliability

If conventional antibiotics are used to treat topical infections, then specific pathogen elimination is improved, but wound healing may be enhanced or retarded

Engineering Contradiction:
Improvepathogen eliminationVSAvoidwound healing process
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent segments the antimicrobial function into three distinct mechanisms: membrane disruption (polymyxin B), protein synthesis inhibition (mupirocin), and cell wall synthesis inhibition (bacitracin). This segmentation allows selective targeting of different bacterial processes without interfering with mammalian cell functions, thereby eliminating pathogens effectively while supporting normal wound healing processes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent adjusts the concentration parameters and formulation characteristics of each antibiotic component to optimize the balance between pathogen elimination and wound healing support. By controlling these parameters, the composition achieves effective antimicrobial activity while maintaining a microenvironment conducive to tissue regeneration and repair.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9826770B2Antimicrobial compositions comprising esters of hydroxycarboxylic acids
Publication Date: 2017.11.28 NEOGEN FOOD SAFETY US HOLDCO CORP
  • US9826770B2 patent drawing
  • US9826770B2 patent drawing
  • US9826770B2 patent drawing

AI summary

Antimicrobial compositions, especially those useful when applied topically, particularly to mucosal tissues (i.e., mucous membranes), including, in particular, a fatty alcohol ester of a hydroxycarboxylic acid, alkoxylated derivatives thereof, or combinations thereof. The compositions can also include an enhancer component, a surfactant component, a hydrophobic component, and/or a hydrophilic component. Such compositions provide effective topical antimicrobial activity and are accordingly useful in the treatment and/or prevention of conditions that are caused, or aggravated by, microorganisms (including viruses).