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Extracting natural active agents, e.g. drugs, from vegetable substrates in high yield, by transcritical extraction using suopercritical fluid subjected to cyclic pressure variations
Extracting natural active agents, e.g. drugs, from vegetable substrates in high yield, by transcritical extraction using suopercritical fluid subjected to cyclic pressure variations
A transcritical process for increasing yield in the extraction of natural active agents (A) from vegetable substrates using supercritical fluid (I) (optionally together with a cosolvent) involves subjecting the extraction system to rapid, cyclic pressure variations around the critical pressure of (I) in a thermostated, hermetically sealed vessel, by varying the volume of the vessel while retaining a constant quantity of (I).
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