Preparation of a powder (I) containing crystalline particles of glucopyranosyl-alditols (A), comprises mixture of glucopyranosyl-alditols syrup (II) and (A), on the basis of dry matter, where the mixture is made by simultaneously dispersing (II) and (A) in an open rotary container containing granules of glucopyranosyl-alditols base (III), and recuperation of (III) from the container and the crystallization of (A) contained in the granules. Preparation of a powder (I) containing crystalline particles of glucopyranosyl-alditols (A), comprises mixture of glucopyranosyl-alditols syrup (II) having a content of dry matter (8 wt.%) and a content of (A) is 95 (preferably 98) wt.%, on the basis of dry matter, where the mixture is made by simultaneously dispersing (II) and the particles containing (A) in an open rotary container containing granules of glucopyranosyl-alditols base (III), by means of which (II) and the particles containing (A) are mixed on the surface of granules of (III) in the container, recuperation of granules of (III) from the container and crystallization of (A) contained in the granules (where the granules of (II) in the container being maintained in movement by the rotation of the container). Independent claims are included for: (1) (I) containing crystalline particles of (A) which is obtained by the above process； and (2) preparations of tablet and confectioneries using (I) containing crystalline particles of (A).
