Abstract: Colloidal compositions based on fillers, sol oxides, poly silicates, and, optionally, pigmenting agents, and their method of production the solid disperse phase not only operates to cross-link but also as an overmatrix incorporating macroparticles therein. The dispersant is finally chemically set with excess setting agent so that the preliminary product can be finalized to the desired material. For this purpose a matrix-like substance of filler-like macroparticles and sol oxide (crosslinling substance) and a buffer are brought together for assisting the formation of the overmatrix and are processed. This substance is pigmentable by introducing a variation mixture into the substance, so that a wide range of characteristics can be obtained. The substance directed at the desired material, namely a hydration and balancing process stage and a subsequent setting and stabilizing process stage.

Abstract: A dietetic, cholesterol-reduced whole egg or egg yolk product and its method of preparation in which the whole egg or the yolk is dehydrated, a grain size of about 150.mu. to about 300.mu. is formed, the grains are suspended in a low-cholesterol liquid food oils, the cholesterol is dispersed into the liquid food oil, and the cholesterol enhanced liquid food oil is removed, wherein the grain size is maintained throughout the cholesterol reduction process.

Abstract: A bone regeneration membrane containing resorbable or degradable, polymeric and/or polymeric-ceramic material with a glass transition temperature in the range of -30.degree. to +200.degree. C.The novel membrane can be used for the spontaneous regeneration of bone and for the improved application of autologous or allogenic graft materials and therapeutic agents.