The volatile ingredient in traditional Chinese drug is widely applied to preparations owing to its effects of antibacterial, antiinflammation, acesodyne, etc. During the production and the storage,they degrade very quickly, which leads to diminish the curative effect and affects the appearance of the preparations. So it is necessary to study on the stability of the volatile ingredient in the preparations. In this work, the main goal is to prepare the BS microcapsule, which can not only improve ...