CBD Extraction Methods and why we choose Supercritical CO2 Extraction
All CBD extraction methods require a Cannabidiol CBD extraction machine. What kind of machine is chosen depends upon the desired extraction method, and that depends upon the desired quality of the final product, as well as practical concerns including the size and budget of the operational setup. Supercritical CO2 extraction, also known as “SCCO2”, is a safe, efficient, and environmentally friendly extraction process proven to yield a fresh, clean, aromatic oil without the toxicity and other safety hazards inherent in other CBD extraction methods, specifically solvent-based methods. If not properly treated and purged, some chemical solvents (such as butane) may remain in the extracted oil, leading to a host of complications and consumer safety concerns.
Supercritical CO2 Extraction — The Basics
Supercritical CO2 extraction has been used in the food and beverage industry for decades for purposes ranging from reducing the fat content in cheese to decaffeinating products such as coffees and teas. Due to the relative safety, ease, and environmental friendliness of the process, nontoxic supercritical CO2 extraction is also widely used throughout the cannabis and herbal supplement industries. Before diving into the details of extracting CBD, it’s helpful to understand the basics of supercritical CO2 extraction. Supercritical CO2 extraction works because CO2 is tunable, meaning it can be modified to focus on extracting a particular compound, such as CBD. This is achieved by perfectly balancing the variables of temperature and pressure. For example, materials high in terpenes are extracted better at a lower pressure and temperature, while materials high in resin are more readily extracted at a higher pressure and temperature. Maximum extraction efficiency varies from plant to plant, but hemp is highly responsive to the process, making supercritical CO2 extraction an ideal way of processing CBD. The method involves three basic steps.
Supercritical CO2 CBD Extraction Methods — How Does CO2 Extraction Work?
The CO2 cannabinoid extraction method starts with a relatively simple setup. The extraction machine utilizes an extraction vessel and dual syringe piston compressor to bring the source material in contact with CO2 which has reached supercritical parameters. First, the plant material is placed in an anodized aluminum vessel known as an extraction column. It’s best to load the extraction column by first filling small sections and then packing these sections together tightly. This will ensure the plant materials are evenly packed and compressed within the chamber for a solid fill; this allows the CO2 to come into direct contact with as much plant material surface area as possible. In a separate compartment, an internal compressor and heating element are used to increase both the pressure and heat, allowing the CO2 to reach its supercritical state. In its supercritical state, CO2 maintains many properties of both a liquid and a gas. This means the supercritical CO2 can pass through the plant material like a gas while also dissolving materials like a liquid. Next, the supercritical CO2 extract flows into a collection jar where a sudden reduction in pressure from the material column to the collection jar causes the CBD to separate from the CO2, allowing the raw CBD oil to be collected.
At LEAFBLOOM Organics, we want our customers to experience CBD without compromising quality and purity. Our raw CBD oil extract is made first with our customers in mind. Our oil is NEVER processed, filtered, or distilled. We leave in all of the full plant goodness from fats, lipids, chlorophyll and the end product is something from nature as it was always intended. To learn more about cannabinoids such as CBD, please read this post about CBD and CBDA. To learn more about how much CBD you should take, please read this post here.