BIOBASED CHEMICALS
protected by the robust yeast cell wall. Instead of relying on a separate synthetic encapsulation system, the yeast itself functions as a durable biological‘ suitcase’ that safeguards the bioactives after they are manufactured, ensuring their integrity during field application through to insect uptake.
This platform is also designed for real-world farm logistics. As yeast production is an established industrial process with strong manufacturing ecosystems globally, the approach is positioned to deliver a cost structure that is industrially viable and affordable to farmers.
RNAi yeast can be shipped in powdered form, which maximises shelf life, improves transport efficiency and supports tank mixing for foliar spray application. Farmers can apply it using standard spray equipment, enabling seamless integration with existing crop protection practices rather than demanding new machinery or complicated protocols.
This approach is in advanced commercial development, with field trials ongoing to validate performance under real agronomic
Why yeast protection matters scientifically
• Physical shielding: The yeast cell wall provides a naturally strong barrier against harsh environmental exposure that would otherwise degrade the RNAi bioactives
• Stability through the value chain: Because the RNAi bioactives remain intracellular, their bioavailability is maintained during storage and handling
• Reduced need for synthetic carriers: Eliminating or minimising speciality encapsulation systems is a direct pathway to lower cost and greater scalability, while also reducing reliance on non-biodegradable materials and downstream environmental burden. conditions. Current pest targets include beetles that cause significant yield reductions in potato, canola( or rapeseed) and other row crops. These chewing insects are known for their ability to develop resistance against conventional, synthetic chemical pesticides.
The RNAi yeast approach can address this issue, where a single yeast formulation can be designed to carry multiple RNAi bioactives to silence multiple essential genes at once. This multitarget approach can increase potency, greatly reduce the probability of resistance evolution and create more consistent pest control performance across the growing season.
Wider opportunities
As global regulatory momentum continues to push toward safer, more sustainable crop protection tools, a yeast-based RNAi approach that is precise, non-broad-spectrum and designed to avoid harming nontarget species aligns strongly with what regulators and consumers increasingly want from modern pest management.
A broader economic angle is also at play: protecting crops from infestations supports international trade stability by reducing the risk of pest-driven export restrictions or bans, an often overlooked but material consequence for export-dependent agricultural economies.
Finally, the platform’ s strategic horizon goes beyond agriculture. IP around yeast-based RNA delivery is positioned to support RNA-based applications beyond agriculture.
There are longer-term possibilities in animal health, including vaccines and immune support for livestock and aquaculture, and, further ahead, human vaccines and therapeutics for delivering RNA to targeted areas of the gut to address challenging medical issues such as irritable bowel disease and digestive tract cancers.
The Colorado potato beetle has developed resistance against chemical pesticides
Partnerships involving academic research groups are already underway to help achieve this vision.
A versatile workhorse
The speciality chemical sector is increasingly defined by a need to do three things at once: innovate faster, reduce environmental footprint, and stabilise supply chains in a changing world. Engineered yeast sits at the centre of that convergence and is proving to be a strategic manufacturing platform.
For speciality chemical companies, the question is shifting from‘ Can yeast do it?’ to‘ Which products should we move to yeast first?’ The winners will be those who identify the molecules where yeast-engineered products deliver a clear advantage— cost, consistency, sustainability or speed— and then build partnerships and production strategies that turn engineered biology into dependable industrial reality. ●
J j
Dr John Husnik
CO-CEO & CSO
RENAISSANCE BIOSCIENCE info @ renaissancebioscience. com www. renaissancebioscience. com
60 SPECIALITY CHEMICALS MAGAZINE ESTABLISHED 1981