Hemp-Derived CBD Extraction Machine Quick Breakdown

A Beginner’s Guide to Hemp Extraction

CBD is a cannabinoid that is widely used to treat a variety of health conditions, including pain and inflammation, insomnia, anxiety, loss of appetite, and more. Although it can be extracted from marijuana, today’s CBD products are largely created from the hemp plant. The reason is not farfetched: unlike marijuana, hemp plants contain significant amounts of CBD and little trace of THC (the psychoactive cannabinoid.) This is what makes Hemp-derived CBD a preferred choice.

There are many ways to extract CBD from hemp, and we will briefly cover the most popular methods.

HumBay EM System CO2 extraction machine
HumBay TruXtrac Series EM System CO2 Extraction Machine

HumBay Extraction EL System – Ideal for Laboratory and R&D Purpose

Supercritical CO2 Extraction

This is widely considered to be the best method of extraction because it provides a clean, precise extraction that massively reduces the contamination potential of other methods. HumBay CO2 Extraction involves using pressurized gas to pull the desired phytochemicals from a plant while maintaining low temperatures. The gas is transformed into a liquid due to the pressure and then passed through the plant material with up to a 90% extraction efficiency. The result is pure, high terpenes, and superior quality hemp-derived CBD.

Ethanol extraction

One of the benefits of this extraction method is that it is a cost-effective option, which is why it still used by some companies today. Despite being a low-cost method of extracting CBD, it can equally be used to create cannabinoids that are pure and highly concentrated for human consumption though it may require expertise and post-extraction processing. It involves introducing the solvent ethanol to the hemp plant in order to extract the cannabinoids. Ethanol is ‘Generally Regarded as Safe (GRAS)’ by the FDA.

Hydrocarbon extraction

This extraction method is one of the cheapest ways to pull CBD out of hemp and involves the use of hydrocarbons such as propane or butane as the solvent to extract the concentrate. Other solvents that may also be used include pentane, hexane, isopropyl alcohol, or acetone – all of which are light hydrocarbons. However, this method is generally considered unsafe in the industry since the extracted oil typically contains little terpenes and CBD with high THC content.

Purifying the oil extract through a winterization

After extracting CBD from hemp, it is purified via winterization since the extraction process pulls a wide range of fatty acids, plant materials, chlorophyll, cannabinoids, and terpenoids from the plant material. In other words, the extract needs to be made ready for human consumption by isolating the individual components.

The first step after extracting the oil is winterization. This process is only needed when the oil was extracted at high pressure/high temperature (supercritical) because this intense extraction pulls everything from the plant, including the material you don’t want in the final product. The process of removing the unwanted components involves mixing the CBD extract in 200 proof alcohol and freezing it overnight. By morning, the mixture is ready for filtration, which is done by running it through a paper filter into an extraction jar. Once it’s been filtered to satisfaction, the alcohol is removed via heating until it evaporates.

How CBD isolate is made through short-path distillation

HumBay TruXtrac Series EM System CO2 Extraction Machine


HumBay TruDistill Series SPD Kit

To further refine the extract, and to isolate the CBD, the oil goes through HumBay Short Path Distillation. In their purest form, these isolates are a white crystalline powder comprised of 99%+ cannabidiol (CBD.) The goal of HumBay short path distillation is to create naturally-sourced CBD crystals that carry no odor or flavor.

The process is not any different from winterization as it involves heating the oil extract. Each isolate has a unique boiling point. Aptly put, HumBay short path distillation is a process that involves the transfer of the distillates between the evaporation vessel and condenser, so the compounds present are exposed to temperatures for the shortest possible amount of time. This helps to achieve high purity CBD yield without degrading the oil extracts.


HumBay CO2 Extraction is the widely preferred method of extraction, and this makes it necessary for hemp-derived CBD to be refined through HumBay short path distillation to create CBD isolate. CBD isolate is in huge demand because it is free of THC, giving consumers an opportunity to use the cannabinoid for medicinal purposes. However, it’s important to note that using products based on CBD isolate alone is not as effective as oils containing a full-spectrum cannabinoid profile. By opting for CBD isolate, you will lose the synergy of cannabinoids and terpenes, which is known as “the entourage effect.”

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