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桦木醇,一种药用五环三萜成分,大量存在于白桦(Betulaplatyphlly)树皮中。白桦树皮于2000年9月采集自黑龙江省塔源林场。超临界流体萃取技术(SFE)是一种新型分离技术,广泛用于药物和天然产物生产。本文研究了利用超临界CO2萃取技术从白桦皮中提取桦木醇的工艺条件,系统分析了携带剂用量、萃取压力和萃取温度等参数对桦木醇提取率的影响。结果表明,最佳的萃取条件为:每克桦树皮粉所用携带剂用量为1.5mL,萃取压力为20Mpa,萃取温度为55C,CO2流量为10kg/h,分离压力和分离温度分别为5.5Mpa和50C。图4参6。
Betulin, a medicinal pentacyclic triterpene component, is abundant in the bark of Betula platyphlly. Birch bark was collected in September 2000 from Taoyuan Forest Farm in Heilongjiang Province. Supercritical fluid extraction (SFE) is a new separation technique that is widely used in the manufacture of pharmaceuticals and natural products. In this paper, the technological conditions of extracting betulin from birch bark by supercritical CO2 extraction were studied. The effects of the amount of carrier agent, extraction pressure and extraction temperature on the yield of betulin were systematically analyzed. The results showed that the optimum extraction conditions were as follows: the amount of carrier used per gram of bark bark powder was 1.5 mL, the extraction pressure was 20 MPa, the extraction temperature was 55 C, the CO2 flow rate was 10 kg / h, the separation pressure and separation temperature were 5.5 MPa And 50C. Figure 4 reference 6.