湖南山银花挥发油超临界CO_2萃取条件优化.pdf

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湖南山银花挥发油超临界CO_2萃取条件优化.pdf

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湖南山银花挥发油超临界CO_2萃取条件优化

33 4 () Vol.33 No.4 2007 8 Journal of Hunan Agricultural University (Natural Sciences) Aug 2007 1007-1032(2007)04-0506-04 CO 2 (1. 410128 2. 427002) CO (SFE-CO )CO 2 2 2 CO2 48 50 35 28 MPa12 MPa5 MPaCO2 18 L/h120 150 min SFE-CO2 SFE-CO2 3.034.422.874.12 g0.0360.0450.0380.042 g SFE-CO2 CO2 R284.2 A Optimization of SFE-CO method for naphtha of 2 flos Lonicerae produced in Hunan province 1 1 1 1 PENG Guo-ping YANG Hua JIANG Fang-jun YU Hua-zhongRAO Li-qun (1. College of Bioscience and BiotechnologyHNAU Changsha 410128China 2. Key Laboratory of Hunan Forest Product and Chemical Industry EngineeringZhangjiajieHunan 427002China) Abstract Optimization of SFE-CO2 method for naphtha of flos Lonicerae was determined by investigating the effects of pressuretemperaturetime and CO2 flow velocity on the efficiency of naphtha extraction from flos Lonicera macranthoidesas opposed to that by steam distillationand then the differences of naphtha content by these two methods were comparedResults showed that the preferably SFE-CO2 condition to naphtha of flos Lonicerae was temperature 48 for extraction kettle 50 separation kettle35 separation kettle pressure 28 MPa for extraction kettle 12 MPa separation kettle 5 MPa separation kettle