PARTE UTILIZADA=Used part: La corteza (liber) de ramas y ramillos jóvenes.

ACCIÓN FARMACOLÓGICA=Pharmacological action: Antiinflamatorio, astringente, sudorífico y febrífugo.

EFECTOS ADVERSOS Y/O TOXICOLOGÍA

=Adverse effects and pharmacology: No es aconsejable en enfermos de dispepsias hipersecretoras.

POSOLOGÍA=Posology: Eccems y herpes. Cocer en un litro de agua, durante 15 minutos 100 gramos de corteza fresca o 50 gramos de la seca. Dejar reposar unos 10 minutos y colar. Se emplea para hacer lavados y para aplicar en compresas.

COMPOSICIÓN QUÍMICA=Chemical composition: La corteza del olmo contiene taninos, así como fitosterina y flobafeno.

ZONA GEOGRÁFICA=Geografical zone: Caminos de Santiago.

ÚLTIMOS AVANCES EN LA QUÍMICA Y ACTIVIDADES BACTERIOLÓGICAS EN LAS PLANTAS MEDICINALES= RECENT DEVELOPMENTS IN THE CHEMICAL AND BACTERIOLOGICAL ACTIVITIES IN MEDICINAL PLANTS:

Ulmus carpinifolia and Fraxinus excelsior tree leaves, which are in great supply in Iran, were evaluated for removal of Pb(II), Cd(II), and Cu(II) from aq. soln.  Maximum biosorption capacities for U. carpinifolia and F. excelsior were measured as 201.1, 172.0 mg/g for Pb(II), 80.0, 67.2 mg/g for Cd(II), and 69.5, 33.1 mg/g for Cu(II), resp.  For both sorbents the most effective pH range was found to be 2-5 for Pb(II), 3-5 for Cd(II), and 4-5 for Cu(II).  Metal ion biosorption increased as the ratio of metal soln. to the biomass quantity decreased.  Conversely, biosorption/g biosorbent decreased as the quantity of biomass increased.  The biosorption of metal ions increased as the initial metal concn. increased.  Biosorption capacities of metal ions were in the following order: Pb(II) > Cd(II) > Cu(II).  The equil. data for Pb(II) and Cu(II) best fit the Langmuir adsorption isotherm model.  Kinetic studies showed that the biosorption rates could be described by a second-order expression.  Both the sorbents could be regenerated using 0.2 M HCl during repeated biosorption-desorption cycles with no loss in the efficiency of the Cu(II) removal obsd.  Biosorption of Pb(II), Cd(II), and Cu(II) was investigated in the presence of Na, K, Mg, and Ca ions.  These results show a novel way of using U. carpinifolia and F. excelsior tree leaves to remove Pb(II), Cd(II), and Cu(II) from metal-polluted waters.

1) ALFARO, Txumari, Plantas y remedios naturales de los caminos de santiago. Barcelona: B.S.A. 2008, p. 164.

2) SANGI, Mohammad Reza, et al. Removal and recovery of heavy metals from aqueous solution using Ulmus carpinifolia and Fraxinus excelsior tree leaves. Journal of Hazardous Materials. 2008, vol.155, nº3, p.513-522.