Recent Development of Extraction Processes and Extraction of Essential Oil from Coriander by Clean Technology

Abstract: By increasing demand of essential oil in medical and cosmetically field various different extraction technologies are used to extract a essential oil Semi-continuous supercritical carbon dioxide extraction or clean technology unit was used to extract the essential oil from the coriander seeds. Dried seeds were subjected to extraction after grinding to particle size of 300µm. The extraction was carried out at three different pressure levels (30, 35 and 40 MPa), three temperature levels (308, 313, 318 K) and three levels of supercritical CO2 flow rates (10, 15, 20 g/min). The highest essential oil was obtained at 40MPa, 313 K and 15 g/min combination of parameters and the highest yield was equal to 3.20 gm/100gm. The study showed that the temperature has more significant effect than the pressure while the flow rate was having no significant effect on the yield of coriander seed oi