.5. Supercritical fluid extraction
The experimental set-up for the supercritical fluid extraction process is shown in Fig. 1. It consisted of a pump unit (SCF-GET, JASCO) that contained a pressure gauge and cooler, a 170 cm3 extraction cell with outside diameter of 25.5 cm and inner diameter of 10.2 cm, a pressure gauge, heat tape and a mantle heater with thermocouples (K type), trap and a dry gas meter (Sinagawa Corp., Tokyo).