Method for preparing a composition containing at least one internal dehydration product for a hydrogenated sugar

A method for improving stability of a composition of internal dehydration product of a hydrogenated sugar, comprising:

• a) a step of distilling a medium containing the said internal dehydration product in order to obtain a distillate enriched in this product,
• b) optionally, at least one subsequent step of purifying the distillate thus obtained,
• c) a subsequent step of bringing the distillate obtained during step a), which has been optionally subjected to step b), into contact with an agent capable of improving the stability of the internal dehydration product predominantly contained in the distillate, the said agent not being in gaseous form,
• d) optionally, a subsequent step of shaping the resulting composition of internal dehydration product of a hydrogenated sugar,
• wherein the agent is used in step (c) in an amount of 0.0001 to 0.1% these percentages being expressed by dry weight of the said agent relative to the dry weight of the internal dehydration product of a hydrogenated sugar predominantly present in the distillate, and
• wherein the agent used in step c) is selected from the group consisting of reducing agents, antioxidants, oxygen scavengers, anti-acid agents, and mixtures thereof.