Abstract
AIIM To explore the optimal ultrasonic extraction process of volatile oil from prunus tomentosa and analyze the component. METHODS The orthogonal test was carried out with volatile oil rate t as the index,the grinding degree of material, solvent, ratio of material to liquid, ultrasonic time as factors by ultrasonic extraction method,the components were analyzed by GC-MS. RESULTS The main factors that affect the extraction of volatile oil from Prunus tomentosa thunb is extraction, followed by ultrasonic time and.grinding degree. A3B2C1D3 was the best extraction condition: Selection of ethyl ether as extraction agent, the particle size is 30 mesh, the 1:10 ratio of material to liquid, ultrasonic time for 40 min. GC-MS techniques were applied to analyze the chemical constituents of volatile oil, six kinds of main components were isolated and identified ,accumulating for 92.82% of the total volatile oil content . CONCLUSION The Ultrasonic extraction time is short, easy operation, high yield, experiment verified that the extraction rate is 0.6270% under the optimum extraction conditions and identified six main components.
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