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Indexed by:期刊论文

Date of Publication:2022-06-30

Journal:过程工程学报

Issue:6

Page Number:1147-1152

ISSN No.:1009-606X

Abstract:Microwave-assisted aqueous two-phase extraction of steroidal saponins in Dioscorea zingiberensis was studied by ethanol/ammonium sulphate system. The results showed that almost all the five main saponins were enriched in the top phase, and the maximum partition coefficients of Zingibernsis newsaponin, deltonin, Diosgenin-triglucoside, Diosgenin-diglucoside and trillin were 89, 91, 93, 117 and 153, respectively. The optimum mass ratio of material to ethanol was 1:21. The optimum system was composed of 25%(ω) ethanol and 19%(ω) (NH_4)_2SO_4. Under the optimum condition, the yield of total saponins was 95.1%, and the yields of Zingibernsis newsaponin, deltonin, Diosgenin-triglucoside, Diosgenin-diglucoside and trillin were 99.8%, 97.4%, 97.3%, 86.6% and 63.2%, respectively.

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