Optimum extraction technology of total saponins in radix platycodonis scrap

Objective To optimize the extraction technology of total saponins in radix platycodonis scrap.Methods The extraction technology was optimized by orthogonal experiment with the yield of dry extractum and the content of Platycodin-D as evaluation index.Results The optimum extraction technology was determined as follows:8 times amount of 70% ethanol was used as solvent,the extraction time was 1.5 hours and the extraction was conducted for 3 times.Conclusion The extraction technology of total saponins in radix platycodonis scrap optimized by orthogonal experiment is stable,rational and feasible.