Supercritical Fluid CO2 Extraction of Katsura Leaf and Its Application in Cigarettes

Orthogonal experimental design was used to optimize technology of supercritical fluid CO2 extraction of katsura leaf.The extracts were isolated and identified by capillary GC-MS method,and relative contents of constitutes were determined.The best conditions of supercritical fluid CO2 extraction were as follows: pressure 30 MPa,and 48 ℃ for 45 min,the entrainer was 70% ethanol solution with the proportion of 18% raw materials,the extraction rate was 15.21%.52 compounds were identified by GC-MS,81.15% for the major components were phytol,α-farnesene,hexadecanal,6-methyl-5-hepten-2-one,myristaldehyde,linalool,camphene,myristyl alcohol,dodecatrienol,sitosterol and so on.The extract of katsura leaf was applied in cigarettes as tobacco flavorant.The results indicated that it had delicate fragrance,could efficiently modified smoking gas and improved smoking quality.