Colloidal metal-pyrophosphate salts : preparation, properties and applications

Abstract

The objective of this thesis work was to incorporate (mixed) dietary minerals into a colloidal, colourless, inorganic matrix material suitable for food fortification, as food fortification is often problematic due to the interaction of ionic minerals with the foodstuffs to which they are added. In search of a stable colloidal dispersion of such a material, we have used various methods to prepare metal pyrophosphate salts containing divalent mineral cations (MIIPPi), trivalent cations (MIIIPPi) or mixtures thereof. We have studied the colloidal properties of the resulting systems and tested the stable dispersions for their reactivity with foodstuffs using a model system