Extraction of Camphor Tree Essential Oil by Steam Distillation and Supercritical CO2 Extraction |
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| Authors: | Huangxian Zhang Ting Huang Xiaoning Liao Yaohong Zhou Shangxing Chen Jing Chen Wanming Xiong |
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| Affiliation: | 1.College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China;2.National Forestry and Grassland Bureau Woody Spice (East China) Engineering Technology Research Center, Jiangxi Agricultural University, Nanchang 330045, China;3.School of Information and Engineering, Jiangxi Agricultural University, Nanchang 330045, China |
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| Abstract: | The essential oil extracted from Cinnamomum camphora leaves is a mixture of volatile compounds, mainly terpenes, and is widely used in medicine, perfume and chemical industries. In this study, the extraction processes of essential oil from Cinnamomum camphora leaves by steam distillation and supercritical CO2 extraction were summarized and compared, and the camphor tree essential oil was detected by GC/MS. The extraction rate of essential oil extracted by steam distillation is less than 0.5%, while that of supercritical CO2 extraction is 4.63% at 25 MPa, 45 °C and 2.5 h. GC/MS identified 21 and 42 compounds, respectively. The content of alcohols in the essential oil is more than 35%, and that of terpenoids is more than 80%. The steam extraction method can extract volatile substances with a low boiling point and more esters and epoxides; The supercritical method is suitable for extracting weak polar substances with a high alcohol content. Supercritical CO2 extraction can selectively extract essential oil components and effectively prevent oxidation and the escape of heat sensitive substances. |
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| Keywords: | steam distillation supercritical CO2 extraction camphor tree essential oil terpenoids |
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