1. A method of preserving organic piece products, for example, fruits, plants, their parts, as well as piece products of animal origin, using a dehydrogenating solvent and drying in a drying apparatus, the organic piece product being dried in a drying apparatus in the presence of a solvent at temperatures below 100 ° C, characterized in that an enriched solvent is supplied to the organic piece product. 2. The method according to claim 1, characterized in that the solvent used is a solvent enriched in ingredients previously extracted from the organic piece product. The method according to claim 1 or 2, characterized in that the organic piece product is brought into contact with the solvent before being introduced into the dryer. The method according to claim 1 or 2, characterized in that as the enriched solvent, that solvent is used which, prior to the drying process, was in contact with the piece product to be dried. The method according to claim 1, characterized in that the organic piece product is dried in a fluidized bed. The method according to claim 4, characterized in that the drying of the organic piece product is carried out in a fluidized bed in a vacuum. The method according to claim 4, characterized in that the drying of the organic piece product is carried out in a fluidized bed at normal pressure. The method according to claim 1 or 2, characterized in that the solvent is recovered from the exhaust stream of the drying apparatus. The method according to claim 8, characterized in that the recovered solvent is again fed to the organic piece product located in the drying apparatus. The method according to claim 1 or 2, characterized in that the solvent after �
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