Patent ID: 8933054
Filing Date: 2015-01-13
Classification: A23L,A23V,A61K,A61Q,C08B

Abstract:
1. A low-molecular-weight hyaluronic acid or its salt having a molecular weight of 6,000 to 100,000 daltons as measured by a limiting viscosity method, an L value indicating lightness of 90 or more, and a b value indicating hue of 5 or less, the low-molecular-weight hyaluronic acid or its salt being obtained by a process comprising dispersing hyaluronic acid or its salt in an acidic water-containing medium having a pH of 2 or less, at a temperature of 30 to 70° C., wherein the water-containing medium contains at least one medium selected from the group consisting of ethanol, methanol, and acetone.