八角茴香挥发油水提取工艺优化研究

目的：研究水蒸气提取分离八角茴香挥发油的最佳工艺条件。方法：以水为溶剂，采用蒸馏法考察不同料剂比下八角茴香挥发油的出油率，于隔夜静置后水浴加热对油水混合物进行分离。结果：料剂比为1：lO（g／mL），粒径为60目，蒸出油水混合物为30mL时，出油率最高，约为4．9％；将收集的油水混合物静置过夜，于40℃下在水浴锅中加热20min，即可分离除去水得到小茴香挥发油。结论：该法简单易操作，无有机溶剂残留，耗时短，收率稳定，可为八角茴香挥发油的工业化提取及生产提供理论依据。

Study on the Optimal Technical of Aqueousextracting Star Anise Volatile Oil

Abstract：Objective： To find an optimum condition of aqueous extracting star anise volatile oil. Methods：Using water as solvent and volatile oil extractor to extract,the effect of ratio of solid to liquid, extracting time, diameter ofstar anise powder on the extrac- ting rateare discussed, then heated on a water hath to separate the oil and water mixture after standing overnight. Results： The re- sults showed that the ratioof solid to liquid 1 ： 10（g/mL）, the diameter of star anise powder 0. 25mm, Oil-water mixture is 30mL, its extracting rate can reach 4.9 %. Conclusion ： This method is simple and easy to operate, no organic solvent residue, fast reaction and extracting rate steady. The study can provide a theoretical basis for industrial production of star anise volatile oil extraction.