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Phytoextraction

Extraction

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Phytoextraction

For a long time the state-of-the-art in obtaining plant extracts was based on conventional solvents. Here, extraction processes for phyto active ingredients are driven by solubility (in terms of the solvents available for selection) as well as legislative approval issues.



There is a solvent-free alternative, however: supercritical fluid extraction (SFE) using carbon dioxide (CO2) delivers a higher quality product with a much lower risk of damaging the source material. This method preserves sensitive active ingredients because no oxygen is fed into the process and operating temperatures can be kept low. The net result: higher ingredient yields and consistently high quality levels. Applying supercritical CO2 also eliminates the need for expensive and time-consuming process stages (such as distillates) common to conventional methods. Supercritical fluid extraction using carbon dioxide not only makes the process more economical, but also delivers better results.

The advantages of obtaining plant extracts using supercritical fluid extraction with carbon dioxide:

  • Gentle extraction of active plant extracts under inert process conditions

  • No oxidative changes

  • Preserves active ingredients and their efficacy

  • No solvent residue, i.e. no process-related solvent residue that could lead to use restrictions