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Papers of the Week


2022 Dec 26


Plants (Basel)


12


1

Phytochemical Investigation of Marker Compounds from Indigenous Korean Species and Their Antimicrobial Effects.

Authors

Jang Y S, Lee D E, Hong J-H, Kim K A, Kim B R, Cho Y R, Ra M-J, Jung S-M, Yu J-N, An S, Kim K H
Plants (Basel). 2022 Dec 26; 12(1).
PMID: 36616234.

Abstract

species, including willow trees, are distributed in the temperate regions of Asian countries, including South Korea. Willow trees are used to treat pain and inflammatory diseases. Due to the medicinal properties of willow trees, pharmacological studies of other spp. have gained attention; however, only a few studies have investigated the phytochemicals of these species. As part of our ongoing natural product research to identify bioactive phytochemicals and elucidate their chemical structures from natural resources, we investigated the marker compounds from indigenous Korean species, namely, , , , , , , , and . The ethanolic extract of each sp. was investigated using high-performance liquid chromatography combined with thin-layer chromatography and liquid chromatography-mass spectrometry-based analysis, and marker compounds of each sp. were isolated. The chemical structures of the marker compounds (), 3-(4-hydroxyphenyl)propyl β-D-glucopyranoside (), 2–acetylsalicin (), 1—coumaroyl glucoside (), picein (), isograndidentatin B (), 2'–acetylsalicortin (), dihydromyricetin (), and salicin () were elucidated via nuclear magnetic resonance spectroscopy and high-resolution liquid chromatography-mass spectrometry using ultrahigh-performance liquid chromatography coupled with a G6545B Q-TOF MS system with a dual electrospray ionization source. The identified marker compounds were examined for their antimicrobial effects against plant pathogenic fungi and bacteria. Dihydromyricetin () exhibited antibacterial activity against , inducing 32.4% inhibition at a final concentration of 125 μg/mL with an MIC value of 250 μg/mL. Overall, this study isolated the marker compounds of , , , , , , , and and identified the anti- bacterial compound dihydromyricetin.