Rapid quantitative analysis of diosgenin in the tubers of Dioscorea zingiberensis C.H. Wright by coupling cellulose enzymolysis and two-phase acid hydrolysis in tandem with HPLC-UV - Huan Yang; Bin Chen; Xu-bo Wang; Phen-wei Chue; Yu-ping Shen; Guo-hua Xia; Xiao-bin Jia (Natural Product Research, 2013)