Study on the Extraction of Rhizoma Curcumae

Objective To optimize the optimum extracting process of Rhizoma Curcumae by orthogonal design.Methods An orthogonal design table L 9(34)was used with the factors of soaking time;extraction time;water-adding amount and medicinal size.Results The factors influencing the extraction efficiency were as follows:extraction timemedicinal sizesoaking timewater-adding amount.The optimum extraction condition obtained was soaking 12 hours,extraction time 5 hours,7 folds of the materials weight and size for the granular medicine.Conclusion The optimized process is scientific and reasonable,which could guarantee the quality of product effectively.