Processing technics of Rhizoma Dioscoreae stired by wheat bran Dynamics of concentration of Allantoin of different manures in soil and mechanism investigation The Role of Bivalent Cations on the Isolation of Allantoinase from the Soybean Seed Extracts Studies on the Chemical Constituents of Eupolyphaga sinensis Walker Comparison on six active constituents between formula granule and traditional decoction of Rehmanniae Decoction of six ingredients Determination of allantoin in Rhizoma Dioscoreae collected from different regions by HPLC Determination of allantoin in Dioscoreae Rhizoma by LC-MS/MS Study on quality standard of Rhizoma Diosoreae and Rhizoma Diosoreae stir-baked with bran Determination of allantoin in dried rhizoma of Dioscorea opposita by capillary electrophoresis