超临界CO2萃取八角油树脂及其成分分析

Supercritical Fluid CO2 Extraction and Component Analysis of Star Anise Oleoresin

摘要:

以大红八角整果为原料, 考察超临界CO2不同萃取条件对油树脂萃取及成分的影响。实验结果显示：超临界CO2萃取八角油树脂的最佳条件为原料粉碎后过1.50 mm孔径筛, 萃取压力25 MPa, 萃取温度55 ℃, 萃取时间2.5 h(5 L容积萃取釜, CO2体积流量50~60 L/h)。在此条件下, 油树脂相对于原料的得率为12.83%, 挥发油萃取效率为92.31%, 用GC-MS方法对八角油树脂的挥发性成分进行了分析, 其主要成分为反式茴香脑、D-柠檬烯、龙蒿脑等, 反式茴香脑的相对含量为83.74%。

Abstract:

The extraction of da-hong star anise oleoresin by supercritical fluid CO2 was studied. The results showed The optimum process parameters were as follows：mesh size was 1.50 mm, the pressure was 25 MPa and 55 ℃ for 2.5 h(extraction kettle of 5 L, the flow rate of CO2 was 55 L/h). In this condition, the yield was 12.83%, the extraction rate was 92.31%. In addition, the volatile components of star anise oleoresin were analyzed by GC-MS. The main components were trans-anethole(83.74%), D- Limonene, estragole, etc.