Optimization of Extraction Process of Sargentodoxa cuneata by Orthogonal Design

Objective To establish an optimal extraction technology of Sargentodoxa cuneata.Methods The yield of extractum and the content of salidroside were served as indexes.The orthogonal design was used to investigate effects of solvent volume,extraction time,and extraction frequency on the yield of extractum and the content of salidroside,in an attempt to obtain an optimal extraction technology.Results The best extraction technology was as follows:adding water equivalent to 6 times of volume of materia medica,extracting for 3 times,and extracting for 1 hour each time.Conclusion The optimized technology is feasible and reliable,so it can be used for extracting Sargentodoxa cuneata.