Abstract
Fusarium moniliforme var. subglutinans was selected from among 100 strains of fungi for producing ginsenoside F1 from ginsenoside Rg1. The enzyme responsible was purified as a single 85 kDa band with a specific activity of 136 U mg−1. It hydrolysed glucose-linked ginsenosides Rb1, Rd and Rg1 but not for other monosaccharide-linked ginsenosides, Rb2, Rc, R1, and Re. Under the optimum conditions of pH 6.0, 50°C, 30 U l−1 of enzyme, and 5 mg Rg1 ml−1, 4 mg F1 ml−1 was produced after 4 h, with a molar yield of 100% and a productivity of 1 g l−1 h−1. This represents the highest productivity and conversion yield of F1 yet reported.
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Acknowledgment
This work was supported by the National Research Foundation of Korea (NRF) grant (No. 2010-0019306) and by the Next-Generation BioGreen 21 Program grant, Rural Development Administration, Republic of Korea.
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Kim, YS., Yoo, MH., Lee, GW. et al. Ginsenoside F1 production from ginsenoside Rg1 by a purified β-glucosidase from Fusarium moniliforme var. subglutinans . Biotechnol Lett 33, 2457–2461 (2011). https://doi.org/10.1007/s10529-011-0719-0
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DOI: https://doi.org/10.1007/s10529-011-0719-0