Process for extracting a composition comprising a biologically active compound or a precursor to it and a compound or a composition of material of a raw material and a natural product of a plant material composition of natural product and aromatic or aromatic oil

摘要

A process for extracting a compound or composition of matter from a raw material containing that compound or composition as a constituent part is disclosed. The process comprises the steps of (1) contacting a sample of the raw material with an extraction solvent comprising 1,1,1,2-tetrafluoroethane and a co-solvent selected from an alkane and a hydrocarbon ether, (2) forming a solvent liquor comprising the extraction solvent and an extract from the raw material, and (3) separating the solvent liquor containing the extract from the raw material.