Orthogonal test in extraction of total flavone from dried flowers of koel-reuteria paniculata by ultrasonic method

摘要

Objective The research aimed to optimize the extraction technology of total flavone from dried flowers of koelreuteria paniculata by ultrasonic method . Methods Total flavone was extracted from dried flowers of koelreuteria paniculata by ultrasonic method . Teffects of three factors including ethanol concentration , soli dliquid ratio , ultrason time on the yield of total flavone were investigated . The optimum technological conditions of total flavone exaction were confirmed through single factor test and orthogonal test . Results The optimum exaction technological conditions were as follows:70% ethanol , solid -liquid ratio of 1 :30 and ultrasonic time of 90 min . Conclusion This technology has good reproducibility and has better reference value for further technology development of total flavone .

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