Laminaria algae extract, method of preparation and cosmetic or pharmaceutical compositions containing the same

摘要

New betaine-enriched seaweed extract (I) is produced by: (1) harvesting seaweed of the family Pheophycaceae; (2) washing, grinding and homogenizing the seaweed; (3) removing cell debris by centrifugation; (4) removing unwanted components by precipitation with acid and adsorption on active carbon, and (5) filtering the product while monitoring the glycine betaine content by high-performance liquid chromatography (HPLC). An Independent claim is also included for a cosmetic or pharmaceutical composition in the form of a cream, gel, emulsion or milk containing 1-40% (I).