Study on New Extraction Technology and Chemical Composition of Litsea Cubeba Essential Oil

摘要

Evaluated with the yield of litsea cubeba essential oil, water extraction technology of essential oil from the seedof Litsea Cubeba (Lour.) Pers. assisted by microwave and ultrasonic is studied for the first time in this paper. The optimalwater extraction technology of litsea cubeba essential oil assisted by pure microwave is as follows: extracting time 40minutes, microwave power 650 W, solid-liquid ratio 1:4 (g/ml). Average yield of litsea cubeba essential oil is up to10.287% (g/g) under the above optimal technology. The optimal water extraction technology of litsea cubeba essential oilassisted by microwave together with ultrasonic is as follows: extracting time 8 minutes, microwave power 600 W, solidliquidratio 1:7 (g/ml), extracting temperature 85°C. Average yield of litsea cubeba essential oil is up to 14.188% underthe above optimal technology. Microwave and ultrasonic can effectively enhance the extraction process of litsea cubebaessential oil......