超临界CO2萃取当归油的工艺研究

目的:研究超临界CO2流体萃取当归油的生产工艺.方法:用正交试验等方法,研究药材粒度、萃取温度、萃取压力、萃取时间及解析分离条件对超临界CO2流体萃取当归油的影响.结果:超临界CO2流体萃取当归油的优选工艺为:药材粒度40目,萃取温度40℃、萃取压力25 Mpa、萃取时间2 h,CO2流量20L/h,分离釜Ⅰ压力8 Mpa,分离釜Ⅰ温度50℃;分离釜Ⅱ压力6 Mpa,分离釜Ⅱ温度50℃.结论:优选得到的工艺具有较高的提取率,该工艺合理、可行.

Study on Extracting Oil of Radix Angelica Sinensis with Supercritical CO2

OBJECTIVE: To study the extraction of angelica oil by SFE-CO2 (CO2 Supercritical Fluid Extraction). METHODS: Investigating the influence of the granule size of medical material, extraction temperature, extraction pressure, extraction time, releasing and separating condition on the extraction of angelica oil by the orthogonal design and other methods. RESULTS: The optimum extraction is as follows: the granule size of medical material, 40 mu; extraction temperature, 40 degrees C; extraction pressure, 25Mpa; extraction time, 2 hours; flow of CO2, 20 L/h; pressure of separation pot I, 8Mpa; temperature of separation pot I, 50 degrees C; pressure of separation pot II, 6Mpa; temperature of separation pot II, 50 degrees C. CONCLUSION: The optimum extraction has high extraction ratio of angelica oil. The optimum extraction is reasonable and practicable.