Experimental Study On Microwave Extracting Efficacious Components From Chinese Herbal Medicine

According to the experimental investigation, This dissertation based on special microwave heating characteristics and complex construction of Chinese herbal medicine has made a thorough study of the microwave theories, the extraction of Chinese herbal medicine and the particular and complicated heat and mass transfer. The main work and results are as follows.1.The new accurate measuring and extracting volatile oil device was created. Light and heavy oil was extracted simultaneously and the dynamic data was recorded at the same time. The device is applicable to study the mechanism of heat and mass transfer during microwave extracting process.2. The device of industry microwave oven has been developed and which power can be arranged. Its performance is more steady than household microwave oven. Tt is easy to control, and has more power and more yields of extraction. It is outstanding to save energy.3.The household was made over into experimental device that extract volatile oil and efficacious components from Chinese herbal medicine. Optimum experiments that extract volatile oil and efficacious components from Chinese herbal medicine were carried out with uniform design. Optimum results compare with traditional so that the yields by microwave extracted is more than traditional and save energy and time.4.Tanshinoneâ…¡A is mostly at scarfskin and can be extracted by direct immersion in 95% ethanol for a long time, and it is no energy consumption. Chinese herbal medicine immersed in ethanol for a long time didn't mildew. The experimental data can supply theoretical foundation for engineering.5.Efficacious components of nano-Chinese medicine whose size are under 100 nanometer can be extracted by microwave radiation. The results show that nano-Chinese medicine microwave extracted depend on drug material, on extracting process, method and times, on concentrated condition of extracted liquids and storetime.6.the microwave extracting dynamic model and equation in and out of medicine particle have been established during heat and mass transfer process.