Is it a safe extraction method…
Pros and Cons of the Solvent Extraction Method
It is essential to understand the various CBD extraction methods as they significantly impact the quality of the end product, not to mention your health. We don’t recommend utilizing the solvent method because it is dangerous to make and is also more likely to cause health problems. The cost of CO2 supercritical extraction means it is not possible for 99.9% of readers, but it is an excellent, safe, and efficient method.
Once you have the liquid CO2, the next step is to increase the temperature and pressure past the point where the liquid becomes ‘supercritical.’ This term means the CO2 can now adopt properties halfway between a gas and liquid simultaneously. Effectively, the supercritical CO2 can fill a container (like gas) while also maintaining density (like a liquid). When CO2 is in its supercritical state, it is ideal for chemical extraction. This is because it won’t cause denaturation or any damage that would make the CBD unfit for human consumption.
The above is just a taste of what CBD can do to help with certain medical ailments. Let’s take a look now at how it is extracted from the cannabis plant.
Currently we know that when introduced to your body, CBD interacts with your pre-existing endocannabinoid system. Understanding that the human body already generates cannabinoids that bear a great similarity to CBD in structure and function is step one in understanding why CBD oil is proving so popular.
At Vitality CBD we use two different techniques specifically (typically in conjunction) but we’ll discuss all the options available, and how they affect the end result. As always, if you have any further questions drop us an email on our contact page.
How do you extract CBD?
After the initial heating, you then heat the hemp matter further in the olive oil, a process by which the compounds are extracted to the oil. Whilst this is perfect for home users, it results in a low yield and a highly perishable product that isn’t practical on a mass scale.
When we extract the best CBD, the end goal is to harvest it in a concentrated form so that it can then be mixed into CDD e-liquids, CBD oils and CBD topicals. That’s why we use a strain of hemp called Cannabis sativa L., renowned for its high CBD levels.
Cannabidiol is actually synthesised in the trichomes of the female hemp plant, alongside the other cannabinoids, terpenes, and flavonoids. The need to create CBD oils that retain CBD and other cannabinoids whilst removing the THC is part of why extraction techniques are so important.
While it requires qualified personnel and there are higher costs associated with the equipment needed for supercritical CO2 extraction, it is by far the most efficient and quickest method to extract CBD. It is also environmentally friendly due to the limited amount of emissions, and safer than extractions that use certain solvents as CO2 is “generally regarded as safe” by the FDA.
Decarboxylation may take place before or after the extraction, and the exact methodology followed is highly dependent on this choice. But it is an essential part of the CBD oil production process, as non-activated compounds have little to no effect on the user.
When supercritical CO2 is used in CBD extraction, its gas properties allow it to effuse through all plant matter, while its liquid properties allow it to extract compounds efficiently. The exact process varies, and some labs start the extraction with liquid CO2 while others start with CO2 in gas form. In both cases, manufacturers add CO2 in a chamber that includes plant material and use the exact amounts of pressure and temperature needed for CO2 to reach its supercritical state. At this point, and with the help of some additional heat, CO2 acts as a solvent and causes the plant material to separate, carrying with it all the essential compounds. Once done, CO2 is separated from the organic compounds, and manufacturers are left with full-spectrum CBD oil.
These are the most commonly used CBD extraction methods and, as expected, each comes with its own advantages and disadvantages. The main takeaway from this guide should be that the reason you may have seen “supercritical CO2 extraction” in ads and promotions is not just that it sounds cool (although it does!) Simply put, CO2 extraction is by far the cleanest and most efficient CBD extraction method—and a no-brainer for any lab that can actually afford it.
While this CBD extraction process is much simpler, there are some downfalls. It is more prone to error, much less efficient, and may potentially damage part of the essential oil profile of the plant. Due to these reasons, steam distillation is very rarely used to extract CBD nowadays, but many labs still use some type of distillation in the process of isolating CBD from full-spectrum oil.