Abstract: The invention relates to a nitrogenous composition resulting from the hydrolysis of wheat gluten by steepwater obtained from the maize starch industry, characterized in that it exhibits a ratio of inorganic phosphorus to total phosphorus (Pi/Pt) concentrations greater than or equal to 0.15 and a ratio of amino nitrogen to total nitrogen (Na/Nt) concentrations greater than or equal to 0.11.

Abstract: The invention relates to a new nutrient composition resulting from maize steeping. This composition comprises an inorganic phosphorous concentration to total phosphorus concentration ratio (Pi/Pt) of between 35 and 95%. The composition also comprises proteins in an amount which gives a value of less than or equal to 5 according to a C test. A process for producing a nutrient composition is also disclosed; wherein the process requires maize steepwater to be subjected to an enzymatic treatment with the aid of protease and phytase enzymes. Furthermore, the enzymatic treatment is performed on a steepwater whose dry matter content is between 5 and 50%, and pH between 3 and 5, at a temperature varying between 40.degree. and 60.degree. C. and for 4 to 16 hours.

Abstract: Process for the preparation of a product with a high content of maltitol, characterized by the following steps:catalytic hydrogenation of a maltose syrup,chromatographic fractionation of the maltitol syrup formed during the hydrogenation step,adjustment to the desired dry matter of at least the fraction enriched in maltitol.

Abstract: Process for the preparation of crystalline maltitol comprising successively:catalytic hydrogenation of a saccharified starch milk in a vessel 203,a step of chromatographic fractionation of the hydrogenated syrup in a vessel 204,crystallation and separation of the maltitol crystals in vessels 206 and 207 andrecycling through a pipe 309 emerging from the vessel 207 of the crystallization mother-liquors to the head of the chromatographic fractionation step.