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Ilseung Yang, Jong Woo Lee, Sunjin Hwang, Jung Eun Lee, Eunhak Lim, June Lee, Doyk Hwang, Clara H Kim, Young-Sam Keum, Seong Keun Kim
We synthesized a new organic fluorescent dye named resveratrone glucoside from the photoreaction of naturally-occurring phytoalexin compound resveratrol glucoside (resveratrol-3-β-mono-d-glucoside), which is abundant in various plants such as berries, herbs, nuts and grapes. Just like its predecessor molecule resveratrone that was previously discovered by our group, resveratrone glucoside possesses excellent optical properties including a high fluorescence quantum yield, a large Stokes' shift, and a large two-photon absorption cross section...
January 2017: Journal of Photochemistry and Photobiology. B, Biology
T Rodríguez-Cabo, I Rodríguez, M Ramil, R Cela
Liquid chromatography (LC) combined with accurate mass spectrometry (MS), based on the use of a hybrid quadrupole time-of-flight (TOF) MS system, is employed to systematically investigate the photo-transformation routes of trans-resveratrol. Experiments were performed in quartz tubes, containing ethanolic solutions (12% v/v) of the precursor compound, exposed to different ultraviolet (UV) sources and to solar light. Time-courses of trans-resveratrol and transformation products (TPs) were investigated by direct injection of different reaction times aliquots in the LC-QTOF-MS system...
September 4, 2015: Journal of Chromatography. A
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