Real-Time Winterization for THC Extraction

Extraction operators no longer need ethanol winterization, which is a time-intensive and costly process.

THC oil produced using Green Mills Real-Time Winterization, straight from the extraction machine.
THC oil produced using Green Mills Real-Time Winterization, straight from the extraction machine.
Green Mills
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Green Mill Supercritical recently announced validation tests measuring its Real-Time Winterization (RTW) process for THC extraction in a full production setting confirmed results previously achieved with CBD. For many end-product categories, a full lab isn't necessary since fully de-waxed oil is produced straight out of the machine.

What this means for extraction operators is they no longer need ethanol winterization, which is a time-intensive and costly process. Instead, winterization is accomplished with the same CO₂ used during the primary extraction, and it is accomplished in real-time. RTW brings production times down from days to hours and saves hundreds of thousands of dollars compared to the cost of building and operating a traditional extraction and refinement laboratory while creating a simple, ethanol-free, mono-solvent workflow.

Green Mill’s testing partner for the THC validation tests is Organic Remedies, a vertically integrated clinical research licensee located in Carlisle, Pennsylvania. Their cultivation, manufacturing, and research center is a 250,000 square foot state-of-the-art facility.

Cannabinoid loss highlights a cost caused by ethanol winterization that is not visible, but is significant nonetheless. It is one example — among many — that makes up a complete picture of a lab’s efficiency once one looks beyond the amount of biomass that can be sent through the extraction machine itself.

“The typical THC extract producer that winterizes with ethanol is losing 5-8% of their valued compounds, or about $150,000 per year, just in the act of transfer and processing,” said Green Mill Director of R&D, Jesse Turner. 

Initial equipment delivery is planned for Q3 2021.

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