| abstract |
PCT No. PCT/FR96/02008 Sec. 371 Date Jun. 15, 1998 Sec. 102(e) Date Jun. 15, 1998 PCT Filed Dec. 13, 1996 PCT Pub. No. WO97/21828 PCT Pub. Date Jun. 19, 1997A process is provided for the production of glycogens or an extract rich in glycogens from yeast cells, and a cosmetic composition containing them. A given quantity of yeast cells, from a specific culture or recovered as residues of a fermentation process, is subjected to an operation of enrichment in intracellular glycogens by culturing in two phases in the presence of a carbon source. The metabolism of the yeast cells is then stopped. The membranes of the yeast cells are then at least partially disintegrated to free intracellular substances, and the freed intracellular substances are subjected to at least one precipation to precipitate glycogens. A cosmetic composition comprising the glycogens is formulated in admixture with a dermatologically acceptable excipient. |