Optimization of Ferulago Angulata oil extraction with supercritical carbon dioxide

In this study, the essential oil of aerial parts of a species of a plant called Ferulago Angulata was extracted by CO2 to optimize the results of the supercritical extraction process and then the essence was analyzed by the method of GC/MS. This extraction has been performed using Taguchi testing method and choosing L16 array in a laboratorial pilot under the following: pressure (90, 120, 140, and 190 bar), temperature (35, 40, 45, and 55 °C), the average particles size (250, 500, 710, and 2000 μm), flow rate (3, 5, 7, and 12 ml/s) and dynamic time (25, 50, 70, and 120 min). Then optimizing process was done to achieve maximum yield extraction. The optimizing conditions are as follows: 190 bar, 35 °C, 710 μm, 12 ml/s, supercritical flow rate 12 ml/s and the final yield is 0.853%. The total yield of supercritical extraction in the mentioned conditions as well as empirically is 0.97% or about 1%. This is the first report announcing optimization of the operation of supercritical extraction of Ferulago Angulata in a laboratorial condition. In the last report of the same authors, which was also for the first time, the chemical components of this plant essence were identified through supercritical extraction and then were compared with the extraction components of other traditional methods.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► We optimize experimental conditions of Ferulago Angulata plant. ► We predict well maximum yield and compare it with experimental data. ► Quality, quantity of extacted essence is higher than the traditional methods.