Microbially-derived antimicrobials for controlling lactic acid bacteria in food
Innovative antimicrobial solutions, including a lantibiotic and a hydroxy-acid, designed to control lactic acid bacteria in cured meats, sauces, and condiments. These agents have shown effectiveness against Gram-positive bacteria in meat applications and are undergoing further validation.
Overview
This research offers a novel approach to controlling lactic acid bacteria (LAB) using microbially-derived antimicrobials, specifically a lantibiotic and a hydroxy-acid. These solutions, initially developed for raw meat applications, are now being tested for broader use in cured meats, sauces, condiments, and dressings. The goal is to enhance food safety and extend shelf life by effectively managing spoilage bacteria.
Technical specifications
Key features:
- Two antimicrobial agents: a lantibiotic and a hydroxy-acid, with a third agent targeting Gram-negative spoilage prevention.
- Proven efficacy against Gram-positive bacteria such as Brochothrix thermosphacta and Carnobacterium maltaromaticum in raw meat contexts.
- Antimicrobials can be applied directly or in micro-encapsulated form for controlled release.
- Validation includes disc diffusion tests and challenge studies on cured meats and sauces.
Technology readiness level
Currently at Technology Readiness Level (TRL) 5, these antimicrobials have been validated in controlled lab settings. Further testing is planned to confirm effectiveness in real-world food processing environments.
About AgResearch
AgResearch is a New Zealand-based Crown Research Institute and part of the Bioeconomy Science Institute. It delivers scientific research, knowledge, and technologies specifically for the pastoral, agri-food, and agri-technology sectors. The organization operates through national and regional research centres and farms across New Zealand, focusing on areas such as sustainable agriculture, biosecurity, future farming systems, and emerging foods. AgResearch employs a strategy-led approach that incorporates te ao Māori and digital innovation to drive economic growth while addressing environmental and social challenges.
The company's work provides evidence-based solutions that enhance the value, productivity, and profitability of New Zealand’s primary industries. By partnering with businesses, Māori enterprises, and the government, AgResearch helps stakeholders navigate issues like climate change and evolving consumer demands. Their expertise supports the development of sustainable land-based enterprises, the protection of natural resources, and the creation of high-value bio-based products, ultimately contributing to the long-term resilience and competitiveness of New Zealand’s agricultural economy.
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