Identification and quantification of phenolic compounds in Hypericum perforatum L. transgenic shoots

Retracted Article: Organometallic Ag nanostructures prepared usingHypericum perforatumextract are highly effective against multidrug-resistant bacteria

“…Typical UV absorption peaks related to quercetin derivatives were also seen in previous studies. 52,53 The only prominent peak related to OM-Ag-NS in the UV spectrum ( Fig. 6b) was observed at 420 nm and was primarily due to the coherent excitation of electrons in OM-Ag-NS in a limited region of the conduction band, which resulted in an in-phase oscillation.…”

Chemometric evaluation of hypericin and related phytochemicals in 17 in vitro cultured Hypericum species, hairy root cultures and hairy root-derived transgenic plants

“…Tusevski et al . (2014) established an efficient A. rhizogenes A4‐mediated transformation system that would result in the rapid formation of H. perforatum transgenic shoots for the purposes of studying the production of naphthodianthrones. Transgenic shoot cultures accumulated significantly higher levels of total naphthodianthrones than control shoots.…”

In vitro shoot cultures of pink rock-rose (Cistus ×incanus L.) as a potential source of phenolic compounds

“…Higher contents of flavonoids (about 6 times) were found in extracts of shoots cultivated in the agar system when compared to the agitated system. Additionally, other shoot cultures, for example, of different species of Hypericum, e.g., H. perforatum [27,28] and H. undulatum [29], are able to accumulate quercetin and, in considerable amounts, quercitrin.…”