| 摘要 |
<p>The present invention refers to a process for stabilyzing LAA in an aqueous medium, which comprises the step of contacting the LAA with at least one compound capable of forming hydrogen bridges with the LAA. In another aspect, the invention relates to a stable aqueous LAA composition which comprises, in addition to said ascorbic acid, at least one compound which is linked to the LAA by hydrogen bridges, and to a process for preparing it. The present invention further relates to an emulsion including, in its aqueous phase, at least one compound linked to levogyre ascorbic acid (LAA) by hydrogen bridges. Further according to the present invention, a vitamin product is provided, in which a stable LAA composition as described above is contained in organic envelopes which enable a gradual and prolonged release of said LAA into the organism. Said vitamin product may further comprise a compound capable of stimulating the metabolism of the fibroblasts. The present invention further relates to a method for cosmetic, therapeutic or nutritional treatment, which comprises the administration of a composition as described above.</p> |
