CETMIC   05378
CENTRO DE TECNOLOGIA DE RECURSOS MINERALES Y CERAMICA
Unidad Ejecutora - UE
artículos
Título:
Commercial bentonites as detoxifier as broiler feed contaminated with aflatoxins
Autor/es:
A. MAGNOLI; L. TALLONE; C. ROSA; A. M. DALCERO; S. M. CHIACCHIERA; R. M. TORRES SANCHEZ
Revista:
APPLIED CLAY SCIENCE
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2008 vol. 40 p. 63 - 71
ISSN:
0169-1317
Resumen:
Some bentonites have been probed to be efficient as sequestering agents for aflatoxins; they decreased the bioavailability of the toxin in the gastrointestinal tracts of birds when they are incorporated in the diets. The binding capacity of these adsorbents varied with the rheological source and even among batches of a given source. Three bentonites from different sources in Argentina, which have very different aflatoxins (AFs) adsorption capacity, were studied. The characterization comprises chemical analysis, scanningelectron microscopy (SEM), X-ray power diffraction (XRD), Hg intrusion porosimetry, swelling capacity, etc. The main factors affecting the adsorption of AFs seem to be related to the isomorphic substitution of the montmorillonite and to electrostatic interactions generated by the surface charge of the samples. Neither the mean pore size nor the percentage of quartz has any effect upon the AFs adsorption.