Quantitative analysis of xanthohumol and related prenylflavonoids in hops and beer by liquid chromatography-tandem mass spectrometry.

@article{Stevens1999QuantitativeAO,
  title={Quantitative analysis of xanthohumol and related prenylflavonoids in hops and beer by liquid chromatography-tandem mass spectrometry.},
  author={J. Frederik Stevens and A. Wormald Taylor and Max L. Deinzer},
  journal={Journal of chromatography. A},
  year={1999},
  volume={832 1-2},
  pages={
          97-107
        }
}
Evaluation of prenylflavonoids and hop bitter acids in surplus yeast
TLDR
The positive mode was discovered to possess satisfactory collision capacity and high sensitivity for prenylflavonoids, while the negative mode was more suitable for the ionization of hop bitter acids.
Quantitation of 8-prenylnaringenin, a novel phytoestrogen in hops (Humulus lupulus L.), hop products, and beers, by benchtop HPLC-MS using electrospray ionization
Summary8-Prenylnaringenin (8-PN), a potent phytoestrogen, present in hops (Humulus lupulus L.), hop products, and most beers, exhibits an estrogenic activity greater than that of any of the known
Fast Screening Method to Determine Hop’s Phytoestrogens in Beer
A novel, fast, and simple method to determine three phytoestrogens [xanthohumol (XN), isoxanthohumol (IXN), and 8-prenylnaringenin (8PN)] in beer samples by high-performance liquid chromatography
Characterization of the methanolic extract of hops using capillary electrophoresis‐electrospray ionization‐mass spectrometry
TLDR
The optimization of CZE parameters (pH, concentration, and type of buffer) and ESI‐MS parameters have permitted the development of a rapid, simple, direct, and straightforward CZE–ESI‐MS method for the identification of components of methanolic extracts from different hops used in the brewing process.
Enantiospecific analysis of 8-prenylnaringenin in biological fluids by liquid-chromatography-electrospray ionization mass spectrometry: application to preclinical pharmacokinetic investigations.
TLDR
A novel and simple liquid chromatographic-electrospray ionization-mass spectrometry (LC-ESI-MS) method was developed and successfully validated showing that it was sensitive, reproducible, and accurate for enantiospecific quantification of 8PN in biological matrices.
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