Accumulation of Polyphenols and Naphthoquinones in Morphogenic Cultures of Two Drosera Species

A rhizogenic culture of Drosera capensis L. was obtained. An HPLC method with UV and mass-spectrometric detection was applied to analyze the effect of different drying protocols on the yield of individual polyphenols and 1,4-naphthoquinones from the rhizogenic culture of D. capensis L. The results of this analysis were compared with similar data obtained on the previously established morphogenic culture of D. rotundifolia L. that has been maintained for more than 15 years. In the rhizogenic culture of D. capensis L., six compounds were identified for the first time (myricetin-3-O-beta-glucopyranoside, rossoliside, 3,3'-di-O-methylellagic acid 4-O-beta-D-glycopyranoside, myricetin, 3,3'-di-O-methylellagic acid, and plumbagin).