Abstract
Biosynthesis of six saponins (ginsenosides) in suspension culture of P. quinquefolium Z5 was investigated. Ginsenoside content in biomass reached the highest level, nearly 30 mg g−1 d.w., between 25 and 30 days of the culture. Saponins were synthesized simultaneously with cell growth but their synthesis rate was not proportional to the growth rate. During the phase of rapid biomass multiplication, after which biomass reached 90% of its maximum yield, only half examined ginsenosides was produced. The second half of the final saponins yield was produced during the slow growth phase, in which only 10% of biomass was grown. During the intensive growth phase the productivity of six saponins examined per biomass (dry weight) unit was 3.4 μg mg−1 d.w. day−1, however, this parameter calculated for slow growth phase reached nearly 30 μg mg−1 d.w. day−1. There were differences in increase of the contents of six saponins determined in biomass, and it was the highest for saponins Re (20(S)-protopanaxatriol-6-[O-α-l-rhamnopyranosyl(1 → 2)-β-d-glucopyranoside]-20-O-β-d-glucopyranoside) and Rg1 (20(S)-protopanaxatriol-6,20-di-O-β-d-glucoside).
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The project was financed by Medical University in Łódź from its research grant no. 502-13-754 and by State Committee for Scientific Research grant no. 3PO5F01523.
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Communicated by S. Werbrouck.
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Kochan, E., Chmiel, A. Dynamics of ginsenoside biosynthesis in suspension culture of Panax quinquefolium . Acta Physiol Plant 33, 911–915 (2011). https://doi.org/10.1007/s11738-010-0619-2
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DOI: https://doi.org/10.1007/s11738-010-0619-2