[Exploration on oral preparations of Chinese materia medica by semi-bionic extraction]

In the light of biopharmacy, the present new technology to extract oral preparations of Chinese traditional medicinal by semi-bionic method was designed. In the technological process, the prescribed drugs were decoction and extracted first in an acid solution with a certain value and then in an alkaline solution with ther pH value. Afterwards, the extracts were filtered concentrated, dried and made into preparation. The theoretical basis of this technology was analysed and the concrete procedures were introduced, with Shaaogan Zhitong pill as an example.