ZOU Shuping, ZHANG Qi, LI Limin, et al. Biosynthesis of glycyrrhetinic acid monoglucuronide by whole-cell of Penicillium purpurogenum in an aqueous / organic system[J]. CIESC Journal, 2009, (8): 2040-2045.
ZOU Shuping, ZHANG Qi, LI Limin, et al. Biosynthesis of glycyrrhetinic acid monoglucuronide by whole-cell of Penicillium purpurogenum in an aqueous / organic system[J]. CIESC Journal, 2009, (8): 2040-2045.DOI:
Biosynthesis of glycyrrhetinic acid monoglucuronide (GAMG) by β-D-glucuronidase from the whole cell of Penicillium purpurogenum Li-3 in an aqueous / organic system was studied.Results showed that tert-butyl alcohol is the best organic solvent and the optimum volume ratio of aqueous to organic phase is 3 to 7.The rest optimum conditions for this biocatalysis are 1.5 g8226;L-1 of substrate concentration
45℃ of temperature
pH 5.0
7 g8226;L-1 of enzyme concentration and 120 r8226;min-1 of shaking rate.Under these optimized conditions
79.12% yield of GAMG was achieved after 48 h reaction. The whole-cell enzyme has a good reusability and a high stability
which demonstrates the prospect for real application.