Hemp processors around the globe are leaping into CBD oil production with a variety of methods ranging from CO2 pressure systems to chilled ethanol extraction. Each process starts with the same hemp material called feedstock, or raw hemp flowers in the form of whole flowers, trim or ground material. The following is a description of the chilled ethanol extraction method for CBD oil production.
Feedstock in the form of whole flowers, trim or ground plant material is prepared.
The material is combined with 190 proof, food-grade alcohol into a reactor designed to control temperatures to approximately 15 degrees Celsius.
A dunking or mixing system dissolves the plant material in the alcohol while the reactor mechanism cools the mixing material.
After 20 to 60 minutes, the feedstock is thoroughly mixed and cooled.
A vacuum pump and evaporation process then condenses the alcohol while it separates out the extract (essentially filtering out impurities much like a stainless-steel, reverse-osmosis water system).
The process removes fatty acids and lipids from hemp plant matter to produce cannabinoid-rich hemp oil extract. What is left is an extract material ready for consumption.