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Studying iodine intake of Portuguese children school meals
Delgado, Inês; Ventura, Marta; Gueifão, Sandra; Assunção, Ricardo; Coelho, Inês; Bento, Alexandra; Silva, José Armando L.; Castanheira, IsabelIodine is an essential trace element, and its nutritional importance is well established. The iodine content of school meals of Portuguese children aged between 6 and 10 years (collected in the metropolitan area of Lisbon) was analyzed by ICP-MS. The samples were cooked with and without iodized salt and additionally some complementary foods were purchased as supplements to the main meals or to the other meal al...
Studying iodine intake of Portuguese children school meals
Delgado, Inês; Ventura, Marta; Gueifão, Sandra; Assunção, Ricardo; Coelho, Inês; Bento, Alexandra; Silva, José Armando L.; Castanheira, IsabelIodine is an essential trace element, and its nutritional importance is well established. The iodine content of school meals of Portuguese children aged between 6 and 10 years (collected in the metropolitan area of Lisbon) was analyzed by ICP-MS. The samples were cooked with and without iodized salt and additionally some complementary foods were purchased as supplements to the main meals or to the other meal al...
12th IFDC 2017 special issue – Iodine, selenium and iron contents in Portuguese...
Delgado, Inês; Ventura, Marta; Gueifão, Sandra; Coelho, Inês; Nascimento, Ana Cláudia; Silva, José Armando L.; Castanheira, IsabelIodine, selenium and iron are micronutrients essential for thyroid hormone synthesis causing their low plasma levels an additional risk of autoimmune thyroid diseases. A Portuguese TDS pilot study representative of diets in Portugal was carried out, since foods are the main natural sources of these micronutrients. Six hundred and twenty-four samples were collected based on local markets and later analysed in po...
Recent developments and trends in the application of strontium and its isotopes...
Coelho, Inês; Castanheira, Isabel; Bordado, João Moura; Donard, Olivier; Silva, José Armando L.Strontium is a chemical element without biological functions in humans. In fact, only two biological roles are known, both as a biomineral constituent. However, strontium and calcium (a significant biometal) present chemical similarities; hence, the absorption of the former by living organisms is plausible. Based on the particular properties of isotopes of strontium several applications of this chemical element...
Os semimetais na origem e evolução da vida
Aureliano, M.; Nolasco, Pedro A.; Silva, João J. R. Fraústo da; Silva, José Armando L.Metalloids in origin and evolution of life. Metalloids have characteristics between metals and non-metals which give them, in some cases, specific properties. At least two of this chemical elements, boron and silicon, are essential to a significant number of living organisms and since some years ago it has been observed that the same metalloids may be involved in the synthesis and stabilization of some molecule...