British pharmaceutical company GW Pharmaceuticals recently received FDA approval of their oral solution Epidolex for treating seizures associated with We create all of our scientifically-formulated Pure + Potent products with a commitment to quality and purity in mind. Call us today to learn more. Extract the full spectrum of CBD When prioritising the best CBD products, it’s important that each step of the process is carried out with care and precision. You can grow high-quality hemp, with a large percentage of cannabidiol (CBD), but all of that goes to waste without the proper extraction techniques. So, that ra
CBD Oil: A How-To Guide for At-Home Extractions
British pharmaceutical company GW Pharmaceuticals recently received FDA approval of their oral solution Epidolex for treating seizures associated with Tuberous Sclerosis, adding another condition to the list of health issues that their CBD oil solution can successfully and safely treat. Individual users, however, claim that cannabis oil helps reduce pain and anxiety, as well as other issues that still await clinical confirmation.
Apart from its medicinal use, CBD oil can also be used to cook various dishes, sauces, dressings, and gummies. The wave of legalization that has swept North America recently also allowed entrepreneurs to start-up businesses and sell oil and other products made via CBD extraction to a wide array of consumers, not only those with medicinal needs.
If you’re looking for a way to make your own oil, however, this article is here to show you how to extract CBD from a cannabis plant at home.
Distinct types of CBD oil
Depending on the strain you use and the preparation method, there are three different types of CBD oil:
- Full Spectrum
- Broad Spectrum
- CBD Isolate
Each of these three types of products provides a separate set of compounds and effects. It’s very important to know what you’re introducing into your system, especially when it comes to potentially psychoactive substances.
Full Spectrum CBD oil contains more than just CBD; there’s a wide array of other cannabinoids, including THC, terpenes, and essential oils. This type of CBD oil allows the use of both leaves and flowers to assure the presence of every compound; however, leaves hold a high concentration of chlorophyll, which gives the oil a dark color and a somewhat bad taste.
Broad Spectrum CBD oil gives you the full set of substances, as well, however, there is no THC, which means you won’t get high or show positive on a drug test if you consume the oil on a regular basis.
CBD Isolate is the purest form of CBD oil extracted from nothing but the plant flower. If you’re opting for this type of oil, you should use hemp flower for this purpose. Hemp has been legal in the U.S. since the passage of the 2018 Farm Bill.
Since the extraction of Full Spectrum CBD oil is the way to obtain the most of the plant’s benefits to our wellbeing, we’ll go through to examine this method, not only because buying complex equipment for marijuana processing might get you in trouble, but also because it’s the simplest process and easy to implement at home. For those of you who would like to know other methods of marijuana oil extraction, we’ll also mention some alternatives at the end.
Extracting CBD oil from a flower
Before you start the process, it’s of paramount importance to know that Ethanol or Ethyl Alcohol is a highly flammable substance so make sure you take every precaution to keep yourself and your environment safe from fire hazard. That being said, let’s get on with the preparation process.
What do you need?
Cannabis flowers – make sure you trim down every leaf and leave nothing but the flower for the extraction process. Break larger buds into smaller pieces to make it easier for processing or even better, grind the flower so that the herb could absorb the alcohol better.
Ethanol – Best use 95% Food-Grade Ethyl alcohol.
Filtering equipment – Best use paper filters or fold gauze into several layers.
Fireproof bowl – the size of the bowl depends on how much material you have prepared.
Large glass jar – This is where you’ll mix alcohol and weed.
To activate cannabinoids, we must place the ground herb into an oven for about 45 minutes. Spread marijuana over a casserole dish or something similar and keep the oven heated at around 110 degrees Celsius. Depending on the granulation, it could take less than 45 minutes for the decarboxylation process, so pay attention not to burn your weed in the oven.
Mixing and filtering
Place your weed into the jar and pour alcohol over it until it covers the weed completely. Stir the mixture every 5 minutes several times and let the mix sit for an hour or two. You can’t let it sit for too long, so don’t worry if you leave it sitting longer than this.
Place the layered gauze or paper filter over the fireproof bowl and start pouring the solution. It’s not a bad idea to repeat the filtering process several times until you’re satisfied with the achieved purity of the filtered solution.
Removing the alcohol
Ethyl alcohol boils at 78 degrees Celsius which is the temperature you should set on your heating surface and slowly mix the solution within the fireproof bowl. Keep the bowl over the heat source until no alcohol vapor or bubbles is appearing on the surface of the heated liquid.
More oil extraction methods
There are numerous ways to extract oil, some even answer the question of how to extract THC from your product. As these require a bit more experience, we’ll only go through some of the most popular methods.
This is one of the newest ways to produce CBD oil and it offers the purest oil extract, called CBD Isolate, free of any additional compounds. It requires a CO2 machine because it relies on carbon dioxide as a solvent. The herb is being placed into a Co2 machine and kept under pressure. This process also includes the Winterization and Decarboxylation process. The first is used to separate CBD from wax and lipids that might be left, while Decarboxylation activates the CBD.
Similar to Ethanol extraction, the oil method requires the use of olive or coconut oil as a solvent. One major difference is that the herb is being mixed with water and dehydrated before it’s mixed with the oil and heated. This method is most commonly used by people who need to create CBD tinctures or topicals that can be applied directly to the affected area and deal with muscle pain.
We hope this article has helped you capture the basics of CBD oil extraction. We tried to cover the extraction process as comprehensively as possible so you wouldn’t have any setbacks while trying to make your extract at home. Also, we avoided the use of specialized chemistry equipment because, let’s face it, not too many people have a lab set up in the house. Enjoy your new knowledge and have fun making your CBD oil.
Tia is an editor and contributor for AskGrowers. She is passionate about traveling, yoga, and horse-riding, and at some point wants to see every corner of the Earth. She’s been working in the cannabis field for some time and is excited to continue and discover even more about this industry.
What Are the Most Popular CBD Extraction Methods?
CBD has exploded in popularity over the last couple of years and, while most people are familiar with the term and may have even sampled a few CBD-containing products, it’s rare that the average consumer knows the intricate details of the process used to create them. At Pharmstrong™, the entire process from seed to final product fascinates us – especially the extraction methods, as the various techniques used greatly affect the quality, taste, and potency of the final product. We believe it’s worth sharing tidbits about the most popular extraction methods on the market today because knowing this information is not only interesting, but helps the consumer make an educated decision when it comes to selecting the right CBD provider for their needs. Therefore, let’s take a closer look at some of the most popular extraction methods and a few advantages and disadvantages of each.
Quick Review of the Basics
Before diving into the specific extraction methods, it’s helpful to review a few simple, yet important, frequently asked questions about CBD in general:
What is it and where does it come from?
CBD is a cannabinoid, a chemical compound extracted from hemp plants.
Is it legal?
Yes! However it must be hemp-derived and contain .3% or less THC to be legal according to the 2018 Farm Bill. If you purchase a hemp-derived CBD product from a reputable company, who is transparent about the source of their products and provides lab results verifying the levels (or in many cases, the complete absence) of THC, you have nothing to worry about.
What are some common uses of CBD?
This unique and powerful compound is very versatile, making it the perfect addition to many products. CBD is commonly added to carrier oils – such as organic olive oil or MCT oil – to create fast-acting oral drops (which go under the tongue), mixed with beeswax and essential oils for soothing topical balms, or broken down into tiny nanoparticles for incorporation into easy-to-swallow, highly bioavailable softgel capsules. CBD is also commonly used in vaping products and added to gummy candies and energy drink mixes.
Popular CBD Extraction Methods
In order to make beneficial and highly-effective products, the CBD must first be carefully extracted and preserved from the hemp plant. Maintaining the quality and purity of the main ingredient is essential to creating a premium CBD product.
There are several methods for extracting CBD from the hemp plant, and even a few DIY versions (which we don’t recommend). But let’s take a look at several of the most common extraction methods:
Extraction by Solvent:
With this method, a solvent – commonly food grade ethanol, or a hydrocarbon like butane or propane – is soaked or washed over plant trimmings, drawing out the desirable compounds. In the case of hydrocarbon extraction, the resulting mixture, which now contains the cannabinoids and other useful compounds such as terpenes, is then further refined (the refinement method depends on the desired end product) and the majority of the solvent is removed. From there, a final purging of any remaining solvent is done, leaving a concentrated CBD oil. With ethanol extraction, the resulting liquid is then distilled to separate the hemp oil from the food grade ethanol and further isolate the desired compounds.
Pros: The process is efficient, fairly inexpensive, and does not require as specialized equipment as other methods. Solvents are superior at locking onto and drawing out the desirable compounds. Hydrocarbons, in particular, are known for preserving the plant’s flavor and aroma well.
Olive Oil Extraction:
“Natural solvents”, like olive oil, are used as well for the extraction of CBD – not commercially, but rather by CBD/cannabis aficionados. The raw hemp is heated to a specific temperature (decarboxylated) and then added to the oil and heated again to extract the cannabinoids. The olive oil does not evaporate like ethanol or hydrocarbon solvents, so the final product will not be as concentrated and is more of a CBD-infused oil instead of a concentrated extract.
Pros: Inexpensive and easy to do in your own home and eliminates concerns over residual solvents, expensive equipment, and safety.
This popular, tried and true method for extracting essential oils can be used to extract cannabinoids as well. Steam is used to free the volatile compounds (cannabinoids in this instance) from the raw plant material. The resulting vapor, full of the desirable compounds, is then cooled and condensed. The resulting oil and water are then separated.
Pros: Inexpensive, straightforward, and a solvent-free method.
In this method, CO2 (which stands for carbon dioxide) is used to pull cannabinoids and other desirable compounds from the harvested hemp plants. This scientifically advanced, yet fascinating process generally involves three chambers. In the first chamber, CO2 – which is in a gaseous state under normal circumstances – is converted to a liquid state by increasing the pressure and significantly decreasing the temperature. Next, the temperature and pressure are slowly increased until the liquid CO2 reaches a “supercritical” point. This is the neat part. At this point, the CO2 is somewhere between a liquid state and a gaseous state and retains some of the properties of each; it expands like a gas, but is more concentrated like a liquid. Once in this optimal state, the CO2 is pumped into the second chamber, which holds the hemp plant material. The CO2 then passes through the hemp, separating the oil (rich in cannabinoids and other beneficial compounds) from the plant material. The oil and CO2 then make their way to the third and final chamber where the two separate and the residual CO2 simply evaporates. What’s left is a highly concentrated CBD oil extract.
Pros: An extremely precise, solvent free method that is safe (no flammable solvents) and environmentally-friendly (uses less energy and plant material).
Everyone has their own preferences when it comes to the products they use and the methods used to create them. But, we can probably all agree on one thing: a minimally processed and expertly crafted product, sourced from simple, quality ingredients is the best choice when it comes to products in the health and wellness category – CBD included. At Pharmstrong™, we create all of our scientifically-formulated Pure + Potent products with that commitment to quality and purity in mind, and we can promise that our safe, proprietary, and precisely executed extraction and purification process isolates all of the desirable compounds our customers want, and excludes those that they don’t. We would be honored to chat with you more in person in our Breckenridge, CO store, over the phone, or via email at any time to answer any remaining questions you may have about the extraction method we use, CBD in general, or one of our premium grade products.
Which CBD oil extraction method is the best?
When prioritising the best CBD products, it’s important that each step of the process is carried out with care and precision. You can grow high-quality hemp, with a large percentage of cannabidiol (CBD), but all of that goes to waste without the proper extraction techniques. So, that raises the question: which method is best?
At Vitality CBD we often discuss the importance of choosing a quality CBD oils, and how premium extraction techniques contribute to a better product. To truly understand why high-end extraction methods matter, let’s first explore how CBD is synthesised.
What is CBD?
CBD, or cannabidiol, is one of over a hundred different cannabinoids found in plants from the Cannabis family. The most famous of these cannabinoids, tetrahydrocannabinol, or THC, is the one that induces the “stoned” effects typically associated with recreational Cannabis use. On the other hand, studies have repeatedly shown that CBD does not get you high.
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.
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.
How do you extract CBD?
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.
As we’ve mentioned, CBD is actually a constituent in a vast sea of hemp compounds, so extraction isn’t as easy as it first may seem. However, all of these techniques were first developed for other purposes, like extracting essential oils from flowers.
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.
CO2 extractions of cannabidiol
The most expensive and most popular CBD extraction method (particularly amongst manufacturers offering a premium product) involves using CO2. This is because it provides a clean, precise extraction that massively reduces the contamination potential of other methods.
The applications of CO2 extractions stem far beyond just hemp products. CO2 extractions are used to decaffeinate coffee beans, to extract the nicotine from loose-leaf tobacco, and to precisely extract spices and flavours.
CO2 extractions can be split into supercritical and subcritical categories (there’s also ‘mid-critical’, a halfway point between the two), but supercritical is the most common, and the one we use at Vitality CBD for all of our CBD products. We’ll breakdown the differences between each below.
The shared methodology between the two essentially entails running pressurised carbon dioxide across the hemp plant to strip away the desired phytochemicals (literally: plant chemicals). When treated to certain conditions, CO2 actually acts like a solvent, without any of the potential side-effects.
Supercritical CBD extraction
Starting with the liquid form of CO2, a supercritical method involves increasing the temperature and pressure of the CO2 until it becomes ‘supercritical’. This means that the CO2 has properties of both gas and liquid: it is able to fill a container like a gas, whilst also having the density of a liquid.
In this supercritical state, CO2 acts as a solvent when applied to the hemp plant without denaturing any of the compounds. The need to maintain the right pressure and temperature explains why CO2 extractions use expensive equipment, resulting in the best CBD.
Once the supercritical CO2 has been passed through the hemp extract, the resultant solution is passed into a separator to be (you guessed it) separated. The CO2 is stored to be used again, whilst the desired hemp compounds are removed and taken to the next step in the process.
Subcritical CBD extraction
The immediate distinction with a subcritical hemp extraction is the lower temperature and lower pressure. As a result, the process takes longer, but it also further reduces the chances of denaturing the more delicate compounds, like terpenes.
Whilst the yield is smaller than with supercritical, it also allows for lighter oils and other sensitive compounds that might otherwise be dismantled in the process to be extracted. However, the trade off is that heavier, more resinous material will typically get left behind.
Solvent CBD extractions
Probably the cheapest and easiest of all the methods available (you could easily do it at home without buying any specialist equipment. not that we recommend this), solvent extractions are also generally considered to be the most likely to cause issues with the end product.
A solvent extraction involves running the solvent in question—typically either butane or ethanol—to the hemp plant matter. This strips the cannabinoids into the liquid, which is then evaporated so as to leave behind a concentrated oily residue with the hemp compounds in.
The main problem is that the solvent not only removes the cannabinoids, terpenes and flavonoids, but also inadvertently extracts chlorophyll. This occasionally leads to unwanted side effects, and will cause the taste to become much more bitter.
Likewise, the compounds that the solvent does remove can either be denatured, or just degraded entirely during the extraction process. As such, whilst it’s the cheapest and easiest method to do on a mass scale, there’s a reason why many companies are phasing it out. When you buy CBD with us, you can be confident it’s not been treated this way.
Olive oil CBD extraction
An olive oil extraction is most commonly done by home brew enthusiasts looking to create their own CBD oils. Though near any oil can be used in this process, olive oil is preferred due to its masking flavour and versatility.
The first step is to either grind the hemp very finely, or to decarboxylate it, a complex word which here means: heat it at a certain temperature. Through this process, several of the cannabinoids have their chemical make-up converted, making some more potent and others easier to extract.
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.
Dry ice CBD extraction
Whilst the name alone suggests high-tech scientific experimentation, this is another method that can be performed at home (assuming you have access to dry ice). It also benefits from the lack of denaturing solvents, resulting in a cleaner and purer end product.
The process involves flash-freezing the loosely chopped hemp extract, and then sieving the frozen trichomes through a mesh bag. These in turn can then be used as the basis for your cannabidiol oil—it’s really that simple.
Since this is a relatively haphazard and difficult to measure method, the quality is not always ensured depending on how well the hemp is frozen and how vigorously it is sieved. However, if you can get safe access to dry-ice this is a clean alternative to solvents for creating your own CBD oil.
Which CBD extraction method is best?
At Vitality CBD, we would recommend either of the two mentioned CO2 extraction techniques, depending on what compounds you want to prioritise extracting. All of the others have their uses, of course, but CO2 is the best all-rounder.
Learn more about CBD
As mentioned earlier, grasping why a clean and accurate extraction is important is premised on understanding just what is being extracted. Read on here for our supporting articles on terpenes and flavonoids.
If you’ve got any further questions about CBD extraction techniques, or some information you’d like to share with us, our experienced team are always on hand to field any questions. You can reach our friendly team via our contact page, or alternative you can go check out our full CBD range here!
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