Novel botanical biocides for all-purpose cleaners

Overview

This solution addresses the urgent need for safer, more environmentally friendly preservatives in all-purpose cleaners (APCs) as regulatory and social pressures mount against conventional synthetic biocides such as isothiazolinones and formaldehyde-releasers. Botanical extracts offer a sustainable alternative with broad-spectrum antimicrobial activity, lower risk of microbial resistance development, and cost-effective production.

The research has identified specific botanical preparations that meet key formulation requirements: economical pricing below $0.05 per kilogram, compatibility with ethanol, and no adverse effects on product color. These extracts have demonstrated efficacy against the most common spoilage bacteria found in expired non-food products, including Enterobacteriaceae and Pseudomonadaceae species.

Technical specifications

Key features:

• Broad-spectrum antimicrobial activity from complex combinations of bioactive compounds naturally present in plant extracts
• Reduced likelihood of microbial resistance development compared to single-target synthetic biocides
• A curated library of over 1,100 plant extracts sourced through ethical collaborations with Chinese, Indian, and African partners in compliance with the Nagoya protocol
• Certified commercial vendor availability for most plant species at reasonable cost (under $10 per kilogram)
• Validated efficacy against bacterial contaminants identified from 16 expired non-food products
• Compatibility with ethanol-based formulations and neutral impact on product color

Antimicrobial testing approach:

• Tested against a panel of strains commonly associated with product spoilage
• Results documented in a public online database for transparency and accessibility
• Ongoing validation targeting specific resistant strains including Burkholderia cepacia, Acetobacter aceti, and Halomonas species
• Planned quantitative assessments including log order reduction, IC50 values, and activity under alkaline pH conditions
• Product challenge tests scheduled for the five most promising extracts

Technology readiness level

The botanical biocides are at an advanced research and validation stage. Initial screening has been completed across a diverse panel of spoilage-associated bacterial strains, and specific extracts meeting formulation criteria have already been identified. The research team has established a robust supply chain through international partnerships and verified commercial sourcing channels.

Further validation work is underway to confirm efficacy against additional targeted strains and to quantify antimicrobial performance under realistic use conditions. A product challenge test with the five leading candidates will provide critical data for formulation readiness. The technology is positioned for transition toward commercial development pending completion of these final validation steps.