The thesis focused on the extraction, determination, separation of flavonoid inpropolis, and its application. The toxicity and function of products were studied. Themain results were as follows:
Ultrasonic method was used in extraction of propolis flavonoids, the optimumconditions were obtained from the experiments: alcohol concentration 95%,temperature 35℃, proportion of propolis and solvent 1:10, time 20 minutes. Supercritical CO_2 was adopted to extract the active ingredients of propolis by...