Different types of hemp extraction methodes

In our previous blog post, what is Industrial Hemp, we discussed the versatility of hemp such as hemp as food.

Hemp seeds are an extremely nutritious superfood. They are rich in protein, fibre, essential fatty acids, magnesium, iron and zinc. The healthiest fats for the body are polyunsaturated fatty acids such as omega-3 or omega-6 -fatty acids. Because the body cannot produce them itself, it is necessary to take them with food. But also, the proteins that can be extracted from hemp are extremely rich in nutrients. They are particularly easy to digest and contain a lot of fibre. In addition, the amino acid composition is virtually optimal and contains the above-mentioned essential fatty acids, numerous minerals, trace elements and vitamins.Various extractive methods are used to produce these proteins, fibers and fatty acids, among other things.

What is hemp extraction?

Hemp extraction is actually nothing more than a separation technique in which substances are separated from a certain material and transferred to another phase. The transition of a substance occurs due to the difference in bonding or chemical potential between the two phases;

Various techniques are used to produce hemp extracts. These different techniques also ensure different quality. Two major differences in extraction processes are solvent extraction and solventless extraction.

Hemp extraction is not the same as CBD extracts. We will tell you more about this later.

Different types of hemp extraction method:

1.Solvent Extraction.
As the name suggests, solvent extraction uses solvents to extract the CBD to separate oil from the plant. Flowing a liquid solvent through the decarboxylated plant material creates a mixture of CBD oil and solvent. This process removes and transfers the cannabinoid and terpene contents of the plant. The solvent then evaporates, leaving behind pure CBD/CBG oil. This method can use hydrocarbons or natural solvents and is one of the most efficient and cost-effective extraction methods, requiring simple equipment.

However, there are many disadvantages in using this CBD extraction process. First, using hydrocarbons can be very dangerous due to the highly flammable chemicals involved. There is a risk of injury if used incorrectly. Therefore, the use of these solvents should be left to professionals working in the laboratory.

In addition to this risk, hydrocarbons such as butane, propane, kerosene or kerosene are harmful to the end user’s body. Any residue of these toxins can increase the chance of developing cancer. As such, the extraction process must ensure that these chemicals are completely removed during the evaporation process;

Unfortunately, the solvent extraction process is not always accurate. Studies have even found traces of residual hydrocarbons in some CBD products that used the solvent extraction method.
Another disadvantage of this CBD extraction method is that it strips the plant of its wax, chlorophyll and other beneficial plant material. The result may be darker, thicker, lower quality CBD oil. For these reasons, reputable CBD brands generally avoid this extraction method and manufacturers are phasing it out.

2. Ethanol Extraction.
Like traditional tinctures, alcohol is still used to extract the CBD. One part of the process hasn’t changed much since those old alcohol tinctures. Today, however, ethanol extraction is carried out in a highly controlled environment and the ethanol is removed at the end of the process;

Ethanol extraction involves soaking hemp in ethyl alcohol. This causes the cannabinoids to dissolve in the liquid. The ethanol is then evaporated, leaving a concentrated oily residue containing hemp compounds.

The main problem with ethanol extraction is that the alcohol not only removes the cannabinoids, but also the chlorophyll and plant waxes. This requires a long purification process to remove and can make the taste bitter. Another disadvantage is that ethanol the extraction process can break down some of the beneficial compounds. So, while it may be the cheapest and easiest method to implement at scale, there’s a reason why many CBD manufacturers are phasing it out.

3. CO2 Extraction.
When it comes to obtaining the highest quality CBD oil, CO2 is undoubtedly the best extraction method currently on the market. Although the CBD industry has not yet established official regulatory guidelines, it is safe to say that CO2 extraction is quickly becoming the standard among major CBD brands.

There are three types of CO2 extraction: supercritical, subcritical and intermediate critical. The difference between the two lies in the degree of extraction intensity and the quantity and size of the extracted plant molecules. Both subcritical and semi critical CBD extraction methods ultimately produce full-spectrum CBD oil; however, the supercritical method will extract the purest oil. For this reason, it is the most widely used of the three and is used by solved CBD.

In the supercritical method CO2 is used as a solvent and manipulated by specialized equipment at extremely low temperatures to enter a so-called “supercritical state”, meaning it has the properties of both a liquid and a gas. In a process called fractionation, CO2 is pumped through the plant at different temperatures and angles to dissolve the terpenes and cannabinoids to the correct solubility. CO2 can be captured more efficiently in this state because it does not damage the plant or its compounds.

4. Oil extraction.
Oil (usually olive oil) is also a solvent, which means this CBD extraction method is virtually identical to the solvent extraction described above. The decarboxylated plant is heated in olive oil for several hours, without soaking it in hydrocarbons. During this time, the CBD and other cannabinoids in the plant bind to the fats in the oil to form a mixture. Once the oil has cooled, the remaining plant material can be filtered out to produce a CBD-infused oil.

The main difference between hydrocarbon extraction and olive oil extraction is that olive oil, unlike hydrocarbons, is a natural solvent that eliminates the risk of toxic residues. If you’ve ever wondered how to extract CBD oil, you can do the process yourself: olive oil extraction is a viable at-home method for those with basic cooking skills and an interest in experimenting;
Natural solvents are equally effective at extracting CBD oil from plant material.

However, natural solvents also have several disadvantages. Some natural solvents also extract chlorophyll, giving the oil an unpleasant taste when ingested. If CBD is intended to be administered in capsules or used topically, the removal of chlorophyll is not relevant. However, many CBD products are intended to be eaten or inhaled, and removing chlorophyll will make the experience unpleasant for the consumer. The most pressing problem with natural solvents, however, is their reluctance to evaporate. As a result, CBD produced by oil extraction will be less potent than other CBD extraction methods.

5. Cold press extraction method.
The cold press method is an ancient and completely natural technique. It involves freezing hemp flowers and then grinding them under pressure without using chemical solvents or gases. This method preserves the integrity of the cannabinoids, terpenes, vitamins and essential fatty acids present in hemp. The resulting oils are not only pure and of top quality (although yields are lower compared to other methods), but they are also rich in useful natural components. Furthermore, this method guarantees a final product that meets legal standards, for example with a THC content of less than 0.2.

One of the main benefits of cold extraction is its ability to preserve the natural compounds of the hemp plant. Unlike methods that use heat or chemical solvents, cold pressing does not denature cannabinoids, terpenes, flavonoids and other valuable compounds such as vitamins and minerals. This preservation ensures that the CBD oil retains the full profile of its components, providing all the potential benefits of the plant.

Cold pressing is an environmentally friendly extraction method. It requires less energy than CO2 or solvent extraction methods and produces no chemical waste. This approach is in line with sustainable development and respect for the environment, an aspect increasingly appreciated by consumers who are aware of the environmental impacts of their products consumption;
After this we will tell you more about various extracts with the cold press extraction method.

More about cold-pressed oil and its natural benefits can be found <here> Cold-pressed oil – benefit from 100% natural benefits


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