Analyses of phenolic compounds by capillary electrophoresis electrospray mass spectrometry

Olive byproducts and their bioactive compounds as a valuable source for food packaging applications

“…Capillary electrophoresis, a rapid and efficient separation tool requiring small sample and solvent volumes, has been largely employed for quantification of phenolic compounds from olive oil. However, only few early articles have reported the application of capillary electrophoresis combined with DAD or MS in separation and determination of phenolic compounds from olive pomace and OMWW (Lafont et al., 1999; Priego‐Capote et al., 2004). NMR spectroscopy, providing a variety of available experimental procedures, rich and specific structural information and nondestructive testing, has demonstrated its efficacy in the qualitative and quantitative analysis of polyphenols from olive byproducts with no need for early separation of single compounds (Charisiadis et al., 2016).…”

Sample preparation in the determination of phenolic compounds in fruits

“…This is a further instance where the same set of considerations important in analytical methodology have important implications for processing technology. The wastewater contains a number of phenols in quantities determined largely by their partition coefficients and these have been analysed 141 on an uncoated fused-silica capillary electrophoresis column using aqueous ammonium acetate buffer in methanol and negative ion electrospray mass spectrometric detection. Quantitative analysis, with p-chlorophenol as the internal standard, was carried out by single ion monitoring and limits of detection ranged from 1 pg for 4-hydroxybenzaldehyde and protocatechuic acid to 386 pg for vanillic acid.…”

Analysis of furo[3,2‐c]tetrahydroquinoline and pyrano[3,2‐c]tetrahydroquinoline derivatives as antitumor agents and their metabolites by liquid chromatography/electrospray ionization tandem mass spectrometry

“…Among them, the ion at m/z 390, corresponding to the loss of an ethylene group, indicated that the extra hydroxyl group was not located at the C11 and C12 sites. In general, the elimination of a molecule of water was not expected for aromatic hydroxyl group metabolites because there was no neighboring hydrogen to eliminate . This suggested that C2 and C3 were the preferred positions for the hydroxyl metabolite.…”