Study on Extraction Technology of Total Flavonoids from Longwangmao Sugary Almond (Prunus armeniaca)

The objective of this study was to optimize extraction technology of total flavonoids with ethanol by heat reflux extraction method. Based on single-factor test, the optimal extraction conditions of total flavonoids were determined by orthogonal test as follows;ethanol concentration 95%, extraction temperature 65 ℃, solid to liquid ratio 1:25, and extraction time 2 h. Under these conditions, the extraction yield of total flavonoids was 10.60%.