Elaboração de microesferas de cálcio, magnésio e fósforo como alternativa para o enriquecimento de matrizes alimentares

Abstract

The microsphere allows the protection of the minerals from chemical interactions, avoid oxidative reactions, slowly liberate the compound, and only in certain conditions of pH and temperature. The microspheres can influence positively in the increase of the bioavailability of the minerals. The objective of this research is to develop and characterize microespheres incorporated with calcium, phosphorus and magnesium, as an alternative to enrich food. The method for obtaining the microspheres was the spray drying with the polymer Eudragit S100. For the characterization the analysis of ashes, field emission gun scanning electon microscope (FEG-SEM), output, efficiency of encapsulation, humidity and X-ray diffraction were done. The formulation containing 90% of polymer and 10% of minerals resulted in rounded microspheres with smooth surface, with output of 51,95% and humidity of 6,64%. The ashes analysis resulted in 10,358% ± 2,07 of inorganic material and the efficiency of encapsulation 94,69% ± 18,94. The formulation was considered satisfactory in terms of output and efficiency, comparing the data to the literature.