Simple and sensitive method for pyrroloquinoline quinone (PQQ) analysis in various foods using liquid chromatography/electrospray-ionization tandem mass spectrometry.

@article{Noji2007SimpleAS,
  title={Simple and sensitive method for pyrroloquinoline quinone (PQQ) analysis in various foods using liquid chromatography/electrospray-ionization tandem mass spectrometry.},
  author={Natsumi Noji and Takemichi Nakamura and Nobutaka Kitahata and Katsuhiko Taguchi and Toshiaki Kudo and Shigeo Yoshida and Masafumi Tsujimoto and Tamizi Sugiyama and Tadao Asami},
  journal={Journal of agricultural and food chemistry},
  year={2007},
  volume={55 18},
  pages={7258-63}
}
Pyrroloquinoline quinone (PQQ) is believed to be an important factor for mammalian growth and development and has, therefore, been declared a vitamin by some researchers. However, this issue remains controversial, and from a nutritional viewpoint, accurate determination of PQQ levels in a variety of foods is very important. Here, we describe a simple, highly sensitive, and highly selective method for quantitative analysis of PQQ. Liquid foods or aqueous extracts of solid foods were analyzed… CONTINUE READING

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