Study on Ultrasonic Extraction Technologies of Nymphaea candida Presl.
Abstract:ObjectiveTo optimize the ultrasonic extraction condition for Nymphaea candida Presl.. MethodsOptimized conditions (ethanol concentration,materia/extraction solution ratio,ultrasonic time and extraction times) were determined by the single factors experiments and orthogonal test.ResultsThe remarkable factors to affect the extraction of total phenolic acids in Nymphaea candida Presl. were ethanol concentration,materia/extraction solution ratio,ultrasonic time.ConclusionThe optimum extraction conditions of total phenolic acids were:70% ethanol,materia/extraction solution ratio 1∶20,ultrasonic time 40minutes.
Key words:Nymphaea candida Presl.; Phenolic acid; Ultrasonic extraction; Orthogonal test