RESUMO
Objective To optimize the extraction process of mixed volatile oil from Forsythiae Fructus, Saposhnikoviae Radix and Magnoliae Flos and inclusion process of β-cyclodextrin (β-CD). Methods With yield ratio of volatile oil as evaluation index, single factor experiments were used to study the extraction process of volatile oil;saturated aqueous solution was used, with inclusion rate of volatile oil as index, and orthogonal design was adopted to examine effects of charge ratio of volatile oil and β-CD, inclusion temperature and inclusion time on the inclusion process; X-ray scattering technique, infrared spectroscopy and scanning electron microscopy were used to characterize the inclusion compound. Results The optimum extraction process of volatile oil was soaking fine powder extracted 5 hours with 10 folds the amount of water. The optimum conditions of inclusion process were as follows:mixed ratio of volatile oil (mL) and β-CD (g) was 1:10; inclusion temperature was 50 ℃; the inclusion time was 2 h. X-ray scattering technique, infrared spectroscopy and scanning electron microscopy proved the inclusion compound had been formed. Conclusion Optimum extraction and inclusion processes are stable and feasible, and can provide research foundation for further research and development of preparation.