0598447 - ÚVGZ 2025 RIV CH eng J - Journal Article
Tříska, Jan - Vrchotová, Naděžda - Horník, Štěpán - Sýkora, J. - Kučerová, Andrea
Stilbenes in Carex acuta and Carex lepidocarpa.
Molecules. Roč. 29, č. 16 (2024), č. článku 3840. ISSN 1420-3049. E-ISSN 1420-3049
R&D Projects: GA MŠMT(CZ) EH22_008/0004635
Institutional support: RVO:86652079 ; RVO:67985939 ; RVO:67985858
Keywords : resveratrol oligomers * identification * oligostilbenes * cyperaceae * roots * seeds * Carex acuta * Carex lepidocarpa * pallidol * miyabenol A and C * trans-epsilon-viniferin * liquid chromatography * nmr
OECD category: Biochemistry and molecular biology; Biochemistry and molecular biology (BU-J); Biochemistry and molecular biology (UCHP-M)
Impact factor: 4.2, year: 2023
Method of publishing: Open access
https://www.mdpi.com/1420-3049/29/16/3840

Stilbenes in the roots of Carex acuta and Carex lepidocarpa were studied. Root samples were extracted with 100% methanol and analyzed by HPLC and LC-MS. In this way, trans-resveratrol dimers (m/z 455 Da [M + H](+)), trimers (m/z 681 Da [M + H](+)) and tetramers (m/z 907 Da [M + H]+) were identified in the extracts. Using LC-NMR in stop-flow mode, pallidol and trans-epsilon-viniferin as dimers were identified. After the separation of individual peaks and their measurement by H-1 NMR, cis and trans-miyabenol A as a tetramer and cis-miyabenol C as a trimer were identified. In the case of miyabenol A, it is a chromatographically inseparable mixture of cis and trans isomers in the ratio of 2:3 according to 1H NMR measurement. In the case of cis-miyabenol C, the Z-trans-trans-miyabenol C configuration was confirmed. The remaining unidentified peak with a practically identical UV-VIS spectrum to that of cis-miyabenol C is most likely another isomer of miyabenol C.
Permanent Link: https://hdl.handle.net/11104/0356115

Scientific data in ASEP :
HPLC a LC-MS data (Stilbenes in Carex acuta and Carex lepidocarpa)