Abstract:The total flavones were extracted with alcohol as the solvent from Pueraria Lobata Ohwi. The effects of the extraction conditions such as the concentration of ethanol, the extraction time, the ratio of Puerariae to solution of ethanol, extraction temperature and the size of Pueraria Lobata Ohwi were studied. The proper condition was determined by orthogonal experiment. The results were as following: The extraction temperature was 80 ℃, the extraction time was 120 min, the concentration of ethanol was 70%, the ratio of Puerariae to solution of ethanol was 1:12, and the size of Pueraria Lobata Ohwi was 80.
