Supercritical CO2 extraction (SCFE) is a safe method of efficient botanical extraction using a clean, non-toxic solvent ideal for cannabis, hops and more. Hypercritical carbon dioxide extraction is a relatively new process used to extract the essence of the plant. When a certain amount of pressure is applied to CO2. CO2 extraction is a process that uses pressurized carbon dioxide to pull the desired phytochemicals from a plant. In the world of cannabis, the.
is CO2 Extraction? What
Because of its unique properties, this supercritical fluid can pass through the raw cannabis very easily while gently dissolving the membrane of the trichomes to capture their many active compounds. The next phase in the sc-CO2 extraction process occurs when the compound-enriched solvent passes into another pressurized separation vessel, only this time the pressures and temperatures will fluctuate in order to fraction the compounds such as cannabinoids and terpenes away.
Once a compound has been fractioned using sc-CO2, it can then be further modified and refined depending on the desired outcome. In order to create shelf stable and desirable products for the market, often refinement procedures such as winterization and distillation are incorporated as a secondary process. Terpene reintegration may also occur where fractioned compounds are reintroduced to a refined THC solution to create a more robust and flavorful experience for those who prefer to vaporize.
This process is unnecessary if the final product is intended for culinary uses as terpenes may compromise the integrity of an otherwise odorless and flavorless product that is perfect for a food additive.
What makes sc-CO2 so beneficial for the cannabis concentrate market is the customizability factor. By modifying pressure temperature and solvent ratios, various products can be created ranging from vaporizer-friendly oils to dabbing concentrates such as waxes, crumbles, and even shatters and saps.
The range of CO2-based products can be much wider than other extraction methods when used to its fullest potential. While not always cost-effective, SFE using CO2 has proved to be one of the most versatile and safest methods of producing cannabis concentrates. Today, CO2-based products have saturated almost every major market from consumables to pre-filled vaporizers to dabbing products and isolates.
They have potent products at good prices too. Two types of materials are obtained by this CO2 method:. Essential Oils or CO2 Selects: These tend to resemble the classic steam distillate but with the advantage of no temperature degradation and the potential for additional volatile substances that may not be distilled out of the plant under normal steam distillation.
The consistency of the essential oils extracted with the CO2 method will vary from batch to batch just as the plants themselves vary and just as steam distilled oils vary. Naturally, there is also the extraction process itself and the actual processor to consider. These totals are very very much like the herb itself. CO2 totals are usually thick and pasty due to the beneficial fats, resins, and waxes they contain that come from the plant material itself.
These totals are soluble in essential oils and vegetal oils. Some, such as rosemary verbenone must be warmed with the vegetal oil or by itself and then quickly added to warm oil in order to be soluble. It is the same thing for some of the others like sea buckthorn berry or vanilla CO2.
Even small percentages of. Because of the sometimes thick, pasty nature of these CO2 oils, they should not be used in a nebulizer type diffuser. They could clog your diffuser. Now, the CO2 will pull the essential trichomes and terpene oils out of the plant. The solution gets passed via a separator and broken down into its requisite parts. The good stuff including trichomes and terpene is sent to the collection container. Meanwhile, the supercritical CO2 goes through a condenser and turned back into a liquid.
Finally, the liquid goes to a special storage tank and can be used to begin the process all over again. This form of extraction involves low temperature and low pressure. Subcritical extractions take longer than their supercritical counterpart and also produce a smaller yield. Subcritical extraction is less likely to damage terpenes. Mid-critical is simply a general range between subcritical and supercritical. Some companies combine supercritical and subcritical to create a full-spectrum CO2 cannabis extract.
They use the subcritical extraction method to separate the drawn out oil and draw out the very same plant material using supercritical pressure. The oils are then homogenized into one which creates a unanimated oil. While other liquids such as ethanol can be used in this process, olive oil is the most commonly used substance for this extraction which can be performed at home.
The first step involves ensuring the raw plant material is decarboxylated. Most experts recommend heating at degrees Fahrenheit for 60 minutes or at degrees Fahrenheit for 30 minutes. Once this step is completed, add the plant material to the olive oil and heat to degrees Fahrenheit for up to 2 hours and at least 1 hour. This process should result in the extraction of the cannabinoids, and ultimately, you should receive oil with the CBD content you require.
The dry ice extraction method is another method of CBD extraction that can be performed at home although it takes a bit more time and effort than its olive oil equivalent. Put on your gloves and eye protection, chop up the cannabis plant into small pieces and place it in the bucket.
Cover the plant with the dry ice and leave it for 3 minutes; it is best only to fill the bucket halfway; this process causes the freezing of the trichome resins. Turn the bucket upside down on the Plexiglas and shake as much resin through the mesh bag as possible.
Scrap the hash off the Plexiglas with your scraper and place it into one of the jars. Ethanol, low-grade alcohol, and butane are among the most common substances used in Solvent Extraction.
Although ethanol extracts the full range of cannabinoids and terpenes from the plant which makes the end product safe for consumption, it also extracts chlorophyll which may lead to some unpleasant side effects.
Butane offers a stronger oil than ethanol, but it is more likely to contain solvents which could irritate the lungs.
All you have to do is add the liquid whether it is butane, alcohol or ethanol to the plant material. The extraction liquid will strip away the cannabinoids and flavor from the plant material but will probably take some of the green colorings too. Once you believe you have enough cannabinoids in liquid form, heat the liquid to evaporate it down to the CBD base oil. It is extremely important to understand the various CBD extraction methods as they have a major impact on the quality of the end product; not to mention your health.
The cost of CO2 supercritical extraction means it is not possible for Those who create their own CBD oils will tend to use dry ice or olive oil, which provide great purity, yield and are easy to do.
There are also other extraction methods that we have not mentioned in this guide. If you have experience in extracting CBD from the cannabis plant and would like to share your method, feel free to contact us through our Facebook page. We also sell hemp biomass, clones and seeds.
If you want to check us out you can see here. Since chlorophyll is water soluble, and the essence your after, is not. Use hot water to rinse and squeeze the material and repeat.
Then the solvent process will yield a higher quality of product.
What Are CO2 Cannabis Extracts and How Are They Made?
Learn about the different types of CO2 extraction including supercritical & subcritical and why Canna-Pet exclusively uses full-spectrum CO2. The most advantageous aspect of CO2 extraction is the fact that when used as a solvent, carbon dioxide leaves behind no residues, which is critical to providing. CO2 Extraction Definition - In the pursuit for optimal purity, high terpenes, and superior quality, CO2 extraction of cannabis oil and concentrates.