Natural bioactive nanoemulsion for safe antimicrobial and antiviral applications

Overview

This solution centers on a natural germ-kill product formulated from thymol and carvacrol, bioactive compounds extracted from plants such as Thymus species. Both compounds are classified as Generally Recognized As Safe (GRAS) by the FDA and are approved for use in food, cosmetic, and pharmaceutical applications. Thymol has demonstrated proven antiviral efficacy, including activity against SARS-CoV-2.

The innovation combines these high-activity natural antimicrobials with complementary natural ingredients such as peptides, lipids, and polysaccharides to create a stable nanoemulsion. This formulation approach addresses common challenges of natural antimicrobials, including poor water solubility and limited shelf stability, while delivering broad-spectrum germ-kill performance at low concentrations.

Technical specifications

Core bioactive compounds:

• Thymol and carvacrol sourced from plant extracts, comprising approximately 50% of total extract weight
• Effective antimicrobial activity at concentrations above 0.5% against Gram-positive and Gram-negative bacteria, comparable to gentamicin
• Demonstrated antifungal activity
• Antiviral activity validated against multiple viruses including SARS-CoV-2

Nanoemulsion formulation:

• Stabilization using natural surfactants such as tween, triton, sodium lauryl sulfate, and oleic acid
• Incorporation of natural stabilization agents including polysaccharides
• Designed for high-concentration aqueous solubilization of thymol and carvacrol
• Evaluation across dilution ranges of 50X to 200X for pathogen control

Validation approach:

• Antimicrobial efficacy testing following EN 1276 and ASTM E2274 standards
• Minimum effective concentration studies against bacteria, fungi, and viruses
• Shelf-life assessment under room temperature storage conditions

Technology readiness level

The technology is at an advanced development stage. The research team has completed initial extraction and fractionation work, confirming thymol and carvacrol as primary bioactive constituents with demonstrated antimicrobial and antifungal effects. Antiviral activity has been substantiated through published EPA findings.

Future validation will proceed in two stages: first, optimization of nanoemulsion compositions and surfactant combinations for maximum stability; second, comprehensive efficacy testing against bacterial, fungal, and viral pathogens using internationally recognized standards, followed by long-term stability evaluation. The solution is positioned for commercialization in food safety, personal care, pharmaceutical, and surface disinfection markets, with the research group actively seeking collaboration to advance the formulation toward market-ready status.