Quercetin glycosides in Psidium guajava L. leaves and determination of a spasmolytic principle.

@article{Lozoya1994QuercetinGI,
  title={Quercetin glycosides in Psidium guajava L. leaves and determination of a spasmolytic principle.},
  author={Xavier Lozoya and Mariana Meckes and Mamdouh M. Abou-Zaid and Jaime Tortoriello and Constance G. Nozzolillo and John T Arnason},
  journal={Archives of medical research},
  year={1994},
  volume={25 1},
  pages={11-5}
}
The traditional herbal remedy from Psidium guajava leaves has been medically proposed in Mexico as effective treatment of acute diarrhea. A methanolic leaf extract was subjected to a bioassay-guided isolation of spasmolytic constituents. Six fractions were separated on a polyvinylpolypyrrolidine (PVPP) column using a water methanol-gradient. The fraction containing flavonols inhibited peristalsis of guinea pig ileum in vitro. A trace of quercetin aglycone together with five glycosides was… CONTINUE READING

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