Studies on ?-Cyclodextrin-Inclusion Complexes of Volatile Oil from the Tongketing Capsules / 中药新药与临床药理

Objective To study the optimum inclusion process for volatile oil from Tongketing capsules. Methods The study was carried out with orthogonal test at different levels. The utilization ratio of volatile oil was used as the index to optimize the inclusion process. Results The optimum preparation conditions for inclusion were: oil: ?-cyclodextrin: water was 1: 4: 40 (V: V: V). The inclusion time was 10rain and inclusion complexes was dried at 70℃. Conclusion This optimized process is simple, efficient and can be used for the production of Tongketing Capsule on a large scale.