Absolute ginger oil was extracted from ginger with supercritical carbon dioxide.The optimum process conditions are extraction pressure 24.0 MPa,temperature 50 ℃,particle size of dry ginger 60 sieve mesh,CO_2 flow rate 20 m~3·h~(-1)and extraction time 2 h.Compared with conventional procedure,this procedure gives higher yield(about 2.74%) and better aroma,quality of the product conforming to the national standard entirely.Based on these data,...