| 摘要 |
Extraction of essential oils of plant origin in a substantially pure state by cold maceration of the plants in a solvent permitting the extraction, without preliminary grinding, the concentration and the cold removal of terpenes from the essences, ensuring: - a better quality (essences obtained strictly pure after terpene removal), - a better economic yield. With recovery of the solvent by phase separation and the removal of the last traces of the solvent by evaporation. Also separation of the terpenes from the essences with the aid of alcohol. Recovery of the terpenes. Separation of the "essence-alcohol" mixture under the action of a salt. Recovery of the essence; also recovery of the solution which has allowed the terpenes to be separated off. |
