Supercritical CO2 Extraction process of Volatile Components from Chrysanthemum

Supercritical CO2 Extraction of Volatile Components from Chrysanthemum
Supercritical CO2 Extraction of Volatile Components from Chrysanthemum

Chrysanthemum co2 extract

The scientific name of Tianshan Snow Chrysanthemum is Coreopsis tinctoria Nutt., also known as “blood chrysanthemum”. The Uyghur language is “Gulichhar”. It is the only alpine wild plant in Xinjiang that has the same name as snow lotus and has unique effects. It has extremely high medicinal value.

In addition to polyphenols, flavonoids, and saponins, Tianshan Snow Chrysanthemum is also rich in volatile oil. It has various physiological activities such as lowering blood fat, lowering blood pressure, lowering blood sugar, protecting cells, and anti-oxidation and antibacterial.

Supercritical CO2 extraction process technology has been widely used for the extraction of plant volatile components at the beginning of its development. It has the characteristics of completely retaining the natural flavor of plants, safe and free of solvent residues. It is a recognized high-tech green chemical industry.

Supercritical CO2 extraction method of Chrysanthemum

Accurately weigh 300.0 g of pulverized Tianshan Xueju raw material into the extraction kettle of the supercritical CO2 extraction device, and seal the device. Select the set extraction temperature and pressure, and pass CO2 into the extractor

The components of Snow Chrysanthemum that can be dissolved in supercritical CO2 will dissolve in the CO2 fluid; when the CO2 fluid passes through the separator, the set At the separation temperature and pressure, the active ingredients of snow chrysanthemum dissolved in supercritical CO2 are resolved due to the reduced solubility under conditions such as reduced pressure and elevated temperature, and are separated from CO2 in the separator to extract the active ingredients of snow chrysanthemum.

It is left in the separator, and CO2 is separated from the separator in gaseous form. The separated CO2 gas is condensed by the condenser and recycled.

Controlled at a temperature of 45°C and an extraction pressure of 25 MPa for 2 hours, the equipment was stopped and the snow chrysanthemum extract was removed from the separator.

Analyzed by GC-MS,

A total of 50 components were identified in the supercritical CO2 extract of Snow Chrysanthemum, and the relative content accounted for 96.58% of the total. Among them, olefin compounds (including terpenes) have a total of 9 components, and their content accounts for only 7.74% of the total mass fraction, which is significantly lower than the proportion of their flowers analyzed by headspace solid phase micro extraction-GC-MS Higher than 85%); but limonene is still the highest component in its olefins. The total mass fraction of the 7 alcohol compounds is 27.12%, second only to the higher alkane compounds with the highest content ratio (28.59%).

Higher alkane compounds are generally present in the waxy component of plant cuticles, and the high content can reach more than 50% of the plant waxy component.


CO2 Extraction Machine Buyer’s Guide

As you can imagine, not all supercritical CO2 extractors are made the same.
For more than 30 years, we have customized many CO2 extraction machines (Tabletop CO2 Extractor) for many companies and university laboratories (1 lb CO2 extractor). Because each customer’s CO2 extraction process requirements are different, there are almost no identical machines.

How many liters of CO2 extraction vessels are needed?

The first factor that determines the size of the CO2 extraction vessel is the daily working hours of the plant, which determines the daily extraction batch. The vessel size of the CO2 extractor depends on the biomass to be processed per day.

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How many separators are needed?

How can I custom my separator when I need more terpenes in my How can I custom my separators when need more terpenes in CBD oil extraction process?
Waxes separation and Light oil separation in 1st separator;
Light oil separation in 2nd separator;
To trap lightest and volatile compounds in 3rd separator.
It is important to choose the right vessel size that will meet your current needs as well as future demand.

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How many pressure is best for your CO2 extraction process requirements?

The choice of CO2 extraction pressure is a changing factor. If the extraction pressure is too high, the useless substances in the plant will be extracted, such as wax and chlorophyll. If the extraction pressure is too low, the extraction time will be increased.

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How can the minimum operating costs be achieved?

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Further Reading: CBD Oil CO2 Extraction Machine

CO2 extraction process
CO2 extraction process

Advantages of co2 extraction process

In this experiment, the extraction of snow chrysanthemum extract by supercritical extraction method extracts a large amount of waxy components in the extraction process, and in the process of headspace analysis, the waxy components are not volatile, so the detection of such advanced alkanes Less than.

It can be seen from the experimental data that the higher alkane compounds in Snow Chrysanthemum are alkane between C21 and C40, with C31 accounting for the highest proportion (10.99%). C35. In addition, the free fatty acids from C12 to C18 also occupy a considerable proportion (a total of 8 components content ratio of 18.98%), these components are also the main components of plant wax.

In addition, the extract also contains 8.81% aldehydes and ketones, 5.72% lipid compounds and 0.47% terpene oxides, these components are also metabolites during plant growth.

In addition to terpene compounds, the supercritical CO2 extract retains more of the plant’s waxy components (higher alkanes), especially the relatively high content of behenyl alcohol, which has a higher antibacterial resistance Viral activity. If it is used as an essential oil, further purification is required.

Simply the most complete
CO2 extraction process you can find

CO2 Extraction Process

From raw material preparation, we offer you the most complete CO2 essential oil extraction process.
At the same time, more than 100 CO2 essential oil extraction methods from the laboratory are also provided for you.


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Detailed explanation of CO2 extraction process steps of plant essential oils。

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