CO2 extraction starts with a solid piece of CO2 that gets pumped into a second chamber containing cannabis material. The chamber is kept at such a pressure that the CO2 stays in a liquid-like state and absorbs the oils and flavors of the plant. Then, the CO2-cannabinoid mixture gets pumped into a third chamber where the CO2 is allowed to return to a gas state, leaving behind the oil and flavors from the plants.
An important part of harvesting pure, high-quality CBD oil is winterization. This is the process to remove undesirable substances from the oil so you wind up with pure CBD. It is important to note that this is a part of harvesting CBD isolate, not full-spectrum CBD, which keeps those substances in it.
If you want to further refine the oil you’ve gotten, you can run it through a process called short path distillation. This takes advantage of the fact that different compounds in CBD oil each have their own boiling point. To obtain the purest CBD oil, you can boil off the different compounds that have a lower boiling point than the oil itself.
Short path distillation starts by slowly heating your CBD mixture until the extraneous substances begin to boil off. The vapors formed by this process travel through a distillation tube until they reach cooling coils, where they condense. From there, they drip down into a separate collection container, and the process continues until only pure CBD oil is left.
Before we get into how CBD oil is made, let’s go over the basics of what it is and what it’s used for. Cannabidiol, or CBD is one of the substances in the marijuana plant.
Medical patients swear by it. Researchers are intrigued by it. Government regulators are flustered by it. And investors are head over heels for it. But what exactly is CBD oil?
Vaporizer pens are a trendy and discrete manner to vaporize cannabis medicine. However, commonly used thinning agent in many products on the market are harmful when heated and inhaled.
To extract CBD -rich cannabis oil, one must start with CBD -rich plant material. There are many ways to extract oil from the cannabis plant, each has its pros and cons. Some methods are safer and more effective than others. Cannabis oil made with neurotoxic solvents like butane and hexane may leave unsafe residues that compromise immune function and impede healing.
Look for products with clear labels showing the quantity and ratio of CBD and THC per dose, a manufacturing date, and a batch number (for quality control). Select products with quality ingredients that are lab tested and safely extracted.
The vapors formed travel through a distillation tube until they reach cooling coils, where they condense and drip down into a separate collection container. The process continues until only pure CBD oil is left in the original container.
The mixture is then placed in a deep freezer at below-zero temperatures. Once it has time to freeze overnight, it looks cloudy and is ready for filtration. The filter removes the fats and other such materials. The oil and alcohol mixture is placed in vessels that use paper filters. The actual CBD oil remains with the alcohol solution and passes through the filter while the unwanted frozen parts are caught by it. When the oil is of the desired quality, the mixture can be heated to alcohol’s boiling point, which is lower than that of CBD oil, to boil off the alcohol. The alcohol evaporates, and CBD oil is left behind.
The idea of using a liquid to absorb CBD oil from the cannabis plant doesn’t stop with CO2 or ethanol. Naturally liquid substances are also used, including butane, hexane, or isopropyl alcohol. The process works much like the CO2 or ethanol extraction process, as a liquid solvent is run through decarboxylated hemp to remove cannabinoids and terpenes.
When this is done well, CO2 extracted CBD oil is some of the world’s purest, but there is ample room for error when done in less-than-optimal conditions. That potential for error is why subcritical CO2 extraction is used mainly by more “boutique” CBD brands.
CBD stands for cannabidiol. It is one of the many chemical compounds found in hemp and marijuana plants. CBD oil is a supplement that can be added to a variety of different products, such as lip balm, lotion, drinks, and gummies. CBD oil is created by extracting cannabidiol from the flowers and buds of hemp or marijuana plants. The plant cannabis sativa can be classified as either hemp or marijuana, depending on the amount of THC, the chemical that creates a high when consumed, in it. If the particular sativa plant contains less than 0.3 percent THC, it is technically hemp. If the plant has more than 0.3 percent THC, it’s classified as marijuana. Hemp is generally used more for CBD extraction, as it contains more CBD and is legal in all 50 states. But how is the CBD extracted from the plant? The process varies by CBD manufacturer.
For further CBD oil refinement, it is run through a process called short path distillation. This secondary takes advantage of the fact that different CBD oil compounds each have their own boiling point. Short path distillation starts by slowly heating the CBD oil until the unnecessary substances such as terpenoids, flavonoids, and contaminates, begin to boil off. Sometimes a vacuum is also used to separate the vapors with a lower boiling point.
One of the more popular extraction methods for CBD oil uses carbon dioxide, or CO2. This system takes advantage of how CO2 can function as a gas, solid, and liquid. Closed-loop extractors are most commonly used for CO2 extraction.