CO2 Supercritical Extraction

published Jul 22, 2016

What Is It and Why Do We Use It?

Sea buckthorn berries and seeds are wonderful raw products with lots of nutrition. Some extraction processes can have a negative effect on your final oil product. We use CO2 supercritical extraction because it creates the purest final product possible. CO2 stands for carbon dioxide, a natural substance in our atmosphere. Don’t confuse it with carbon monoxide, which is the byproduct of fuel burning appliances. CO2 is a gas but when it is in a solid state it’s what we call it dry ice. Supercritical describes a state between gas and liquid. By increasing pressure and temperature, CO2 goes into a supercritical state .

 

C02 Supercritical Extraction

C02 Supercritical Extraction Process

Somewhere between gas and liquid Co2 becomes perfect solvent. It's especially great for extracting oil from plant matter. Before the extraction process begins a machine separates the berries and seeds. There are different nutritional properties from the seed and berry of the sea buckthorn. That is why we feel it’s important to make two different oils from the raw material. By separating the materials, the result is purer oils. First the supercritical CO2 state passes through the plant material. That part of the process dissolves it and leaves behind pure sea buckthorn oil. Note that this is a simplified explanation and the actual process has more steps.  

Why Is It Better Than Other Methods?                          

As we mentioned before, CO2 is occurs in nature and is non-polluting. Hexane extraction is another process used for creating oils. There have been many cases when hexane has contaminated or left traces in the final product. Cold pressing is the extraction method that most people are familiar with. We prefer CO2 extraction because it uses the lowest temperatures. Lower temperatures are best because they prevent damage to the nutrients in the product. CO2 extraction uses a temperature even colder than cold pressing! It's important to note that the final product from cold press is oil is not as pure as it can be. Many fish oil companies use a process called purification. It uses high temperatures and strips away certain parts of the oils. Manufacturers use this method to isolate certain nutrients. Quality manufactures know CO2 extraction is the best method for many purposes. We value purity and the nutritional qualities above all.  CO2 extraction is the best method we have found to create high quality, food grade oils.

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[…] e extraction processes can have a negative effect on your final oil product. We […]

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