Abstract: Disclosed are blendpolymers prepared by suspending at least one protein-containing material and at least one polysaccharide-containing material in at least one solvent, by heating the suspension up to 50.degree. C. until at least 50% of the protein-containing and polysaccharide-containing materials are dissolved, then cooling the mixture down to room temperature and evaporating the solvent. These blendpolymers can be used to manufacture moulded objects, in particular, articles of daily use, preferably bio-compatible articles, such as containers, capsules, foils or films.

Abstract: Stable, single-phased solutions of water-in-oil microemulsions which contain microorganisms and/or parts thereof are described. They are obtained by adding to crude oil and/or at least one product of the refining of same an aqueous concentrated solution of microorganisms and/or parts thereof, in such a way that said aqueous solution is solubilized in crude oil or the refined product and that the blend thus obtained has the form of a stable, single-phased solution.