In Radiopharmacy the use of complexes as radiopharmaceutical requires that the procedure of labelling (complexing) achieves a radiochemical purity ot the complex ligand-Tc 99m greater than 98%. A study to find the chemical and physical parameters which allows the complexing of the EC ligand with Te 99m and the biological distribution is presented.

In Radiopharmacy the use of complexes as radiopharmaceutical requires that the procedure of labelling (complexing) achieves a radiochemical purity ot the complex ligand-Tc 99m greater than 98%. A study to find the chemical and physical parameters which allows the complexing of the EC ligand with Te 99m and the biological distribution is presented.

In this research we studied the fruit of «Níspero de la Sierra>) as functional food. The carotenoids have been fractioned in two bands by layer chromatography. The major pigment was identified by it's spectral caractheristics in several solvents: ¡3-caroteno (15.18 mg/kg). The cuantification of minerals and proximal analysis were: potasium (1566 ppm), sodium (745 ppm), calciumn (424 ppm), magnesio (290 ppm), iron (5.40 ppm); and carbohidrates (34 .72%), respectively.

In this research we studied the fruit of «Níspero de la Sierra>) as functional food. The carotenoids have been fractioned in two bands by layer chromatography. The major pigment was identified by it's spectral caractheristics in several solvents: ¡3-caroteno (15.18 mg/kg). The cuantification of minerals and proximal analysis were: potasium (1566 ppm), sodium (745 ppm), calciumn (424 ppm), magnesio (290 ppm), iron (5.40 ppm); and carbohidrates (34 .72%), respectively.