Production of diosgenin from yellow ginger (Dioscorea zingiberensis C. H. Wright) saponins by commercial cellulase

World Journal of Microbiology & Biotechnology
Wei LiuJinren Ni


A commercial cellulase was first assessed to be effective in hydrolyzing glycosyl at the C-3 and C-26 positions in steroidal saponins from yellow ginger (Dioscorea zingiberensis C. H. Wright) to diosgenin, a very important chemical in the pharmaceutical industry. The effect of different parameters on enzyme hydrolysis was further investigated by systematically varying them. The highest yield was achieved when the hydrolysis ran at 55°C and pH 5.0 with an enzyme to substrate ratio of 15 × 10(3) U/g. The biotransformed products identified using TLC and HPLC confirmed that the cellulase was capable of releasing diosgenin from steroidal saponins. Moreover, the biotransformation process was explored by LC-MS and LC-MS/MS analysis. Enzymatic hydrolysis together with 40 % of the original sulphuric acid used increased the diosgenin yield by 15.4 ± 2.7% than traditional method. Therefore, the commercial cellulase may serve as a promising tool for industrial diosgenin production and for further use in saponin modification.


Mar 2, 1995·Biochimica Et Biophysica Acta·I D RomanR Coleman
Sep 12, 2002·Biochemistry. Biokhimii︠a︡·M L RabinovichA V Bolobova
Jun 26, 2003·Natural Product Research·Wenji SunYongmin Zhang
Oct 16, 2003·Journal of Agricultural and Food Chemistry·Deng-Jye YangLucy Sun Hwang
May 23, 2006·The Journal of Steroid Biochemistry and Molecular Biology·Xiangjiu HeXinsheng Yao

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Jul 19, 2013·World Journal of Microbiology & Biotechnology·Yuling ZhuJinren Ni
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