Skip to content

CO2 Extraction Method for Oregano Essential Oil

CO2 extraction method
Oregano Oil Supercritical CO2 Extraction Equipment

CO2 Extraction Method For Oregano Essential Oil


Oregano are washed and disinfected, dried at low temperature (not higher than 50°C), pulverized into powder, passed through a 60 mesh sieve, and stored in a desiccator for later use.

CO2 Extraction

Put the oregano powder into the CO2 extraction kettle; assemble it according to the procedure, check the airtight performance of the entire extraction system, and after the system is well airtight, adjust When the temperature and pressure reach predetermined values, extraction is carried out under supercritical conditions, and the experiment reaches the required time.

The volatile oil of oregano powder is collected, and the extraction rate is calculated.

CO2 extraction method
Oregano Essential Oil CO2 Extraction Equipment

Oregano Essential Oil CO2 Extraction Process

  • Granularity: 60 mesh;
  • Extraction pressure: 350 bar;
  • Extraction temperature: 50℃;
  • Separation pressure: 98 bar;
  • Separation temperature: 65℃;
  • Time: 150 minutes
  • Eucalyptus oil extraction rate: 5.82%.
CO2 Extraction Method for Oregano Essential Oil
CO2 Extraction Method for Oregano Essential Oil

Oregano Essential CO2 Oil

Oregano CO2 Select Extract is produced from the leaves of Origanum vulgare, an aromatic herb that is revered for its many uses in culinary and wellness applications. Aromatically, it possesses an warm, well-rounded herbaceous aroma that find to smell much more like the fresh herb than does its essential oil counterpart.

Oregano CO2 Select Extract is deep reddish-orange in color and is fluid at room temperature. It offers a longer shelf life than does Oregano Essential Oil because the production of the essential oil exposes the oil to a great deal of heat during production. The CO2 extraction process uses virtually no heat and thus allows for a longer shelf life.

The oregano CO2 oil is comprised primarily of phenols: 60-80% of carvacrol and 4-5% thymol. In wellness applications, it helps to support healthy respiratory and digestive systems. It is a wonderful oil for use in cleaning applications. It is also helpful in massage formulations. For emotional wellness applications, it can help combat fatigue and improve the mood. We encourage you to research the numerous benefits of this potent extract.

Oregano CO2 Select Extract is a middle note that blends well with many other CO2 extracts and essential oils, especially those in the herbaceous, floral, citrus, spice and wood families.

CO2 Extractio Method

There are a total of 7 processes in the common CO2 extraction method:

  1. Biomass drying
  2. Grinding
  3. Fill Biomass
  4. Pressurize with CO2
  5. Run in Closed Loop
  6. Periodically
  7. Depressurize
supercritical CO2 extraction method
supercritical CO2 extraction process diagram
Supercritical CO2 extraction method
Low temperature drying for roses

Biomass (flowers, leaves, seeds, rhizomes, etc.) is much easier to buck when it includes less than 10% moisture.
Dry biomass to moisture content below 10%.
As an alternative to machinery, many farmers let their crops dry in the field. This works well as long as the harvest time is cool and dry.

Supercritical CO2 extraction method
Grinding for cannabis

Once the biomass has been dried, it is granulated. In general, smaller particles (30-80 mesh) are desirable and tighter particle diameter distributions are better for extraction throughput.
Important: Before grinding (pulverizing) large chunks of biomass, it needs to be divided into flakes and sent to a pulverizer for grinding. This avoids the high temperature generated by the high-speed pulverization of biomass in the pulverizer, which destroys the characteristics of the extract and loses part of the essential oil.

CO2 extractor
CO2 extracting kettle

Load Extraction Vessel with biomass.

Bring each vessel to working pressure using CO2 from supply cylinders.

In Extraction Vessel, compounds are pulled from biomass into solution.
Solvent (CO2) is boiled out of solution in Separator 1.
Evaporated CO2 is condensed into liquid and stored in Accumulator.

Supercritical CO2 extraction method
Supercritical CO2 extraction method

Open valve on the separator to collect extract.

After allotted run time, system is depressurized by releasing CO2 through Separator 3.

Leave a Reply

Your email address will not be published. Required fields are marked *