Quantitative determination and structural characterization of isoflavones in nutrition supplements by liquid chromatography–mass spectrometry

Screening and identification of BSA bound ligands from Puerariae lobata flower by BSA functionalized Fe3O4 magnetic nanoparticles coupled with HPLC–MS/MS

“…Compounds 6, 10 and 13 exhibited [M−H] − ion at m/z 269, 269 and 297, respectively. By comparing the elution order and UV spectra with that reported in literatures, these compounds were characterized as 3 -hydroxyl daidzein (6), genistein (10) and 5,7-dihydroxy-3 ,4 -methylenedioxyisoflavone (13), respectively, which are corroborated by the earlier reports [29,36,37]. It is the first time that compounds 4, 6, 9, 11 and 13 were identified in Puerariae lobata flower extracts.…”

Identification of components in Zhi-Zi-Da-Huang decoction by HPLC coupled with electrospray ionization tandem mass spectrometry, photodiode array and fluorescence detectors

“…1: FD for peaks 4, 7 ( ex 329 nm/ em 446 nm), 25, 27, 28, 29 and 30 ( ex 440 nm/ em 520 nm), MS-TIC for peaks 5,6,8,9,11,12,13,14,16,17,19,21,23,24 and 26, MS-EIC for peaks 1, 2, 3, 10, 15, 18, 20 and 22.…”

“…3 showed the proposed fragmentation pattern of naringenin. [20,21]; peak 20 was identified as glycitein.…”

Quantitation of genistein and genistin in soy dry extracts by UV-Visible spectrophotometric method

“…Many methods reported in literature for the analysis of soy isoflavones are based on high performance liquid chromatography (HPLC) [7][8][9][10] and gas chromatography-mass spectrometry (GC-MS).…”