The differences between Subcritical and Supercritical CO2 extractions.
Two innovative CO2 extraction technologies, Subcritical and Supercritical. Both are very good and in demand.
However, there are significant difference in between these two methods of extractions.
Supercritical method helps accurately extract the necessary and particular components from raw materials. For example, Supercritical method allow extracting fatty oils from Sandalwood nuts, while Subcritical extraction does not.
On the other hand, Subcritical extraction is one of the best method when it is necessary to extract aromatic components, for example, terpenes, and when the presence of resins, waxes, chlorophylls and fatty oils in the extracts is not required.
For example, the plant contains 3% of the required terpenes (aromatics) and the yield for Supercritical extraction is 10%, what does it have to do with unnecessary ingredients?
The density of the solvent within Subcritical extraction should be equal to the density of the extracted substances.
The density of terpenes is 700-1000 g/l,
The density of Supercritical CO2 is 400-500 g/l,
The density of Subcritical CO2 is 700-1000 g/l depending on temperature and pressure.
Subcritical extracts, due to the absence of resins and waxes in the composition, are more suitable for cosmetics and food.
Their compositions are harmonious and beautiful.
Subcritical CO2 extracts of Sandalwood, Buddhawood and Cypress, in addition to aromatics, contain resinoids, which make them excellent fixatives for perfumes and cosmetics.
The temperature of Subcritical CO2 extraction is 15-28 C, so there is no temperature degradation of the extracted substances and raw materials.
Also, the energy consumption for Subcritical CO2 extraction is lower compared to Supercritical method; the residuals after Subcritical extraction can be successfully used for subsequent water-alcohol extraction or tea manufacturing.
Therefore, we have chosen Subcritical CO2 extraction and we are offering our excellent products to you.