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US 2024/0390255 A1Published application
Use of water-soluble lignin as an anti-uv filter
AssigneeUniversite De Bordeaux
InventorsNicolas MANO, Sébastien GOUNEL, Philippe CLUZEAU, Jean-Paul CHAPEL
Life of this patent
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Abstract
A water-soluble lignin obtained by enzymatic treatment, the lignin being water-soluble at a pH between 5 and 10, as an anti-UV filter. A cosmetic composition including the lignin.
Claims17
An anti-UV filter, said filter comprising a water-soluble lignin derived from an enzymatic treatment, said lignin being soluble in water at a pH between 5 and 10, wherein the water-soluble lignin comprises no sulfonate groups or comprises a maximum mass content of 1% by weight of sulfonate groups relative to the total weight of water-soluble lignin.
A cosmetic composition comprising:
- an aqueous phase comprising at least one water-soluble lignin derived from an enzymatic treatment, said lignin being soluble in water at a pH comprised between 5 and 10, wherein the water-soluble lignin comprises no sulfonate groups or comprises a maximum mass content of 1% by weight of sulfonate groups relative to the total weight of water-soluble lignin;
- and
- an oily phase and/or at least one hydrophilic thickening polymer selected from the group consisting of cellulose and its derivatives, natural gums, scleroglucans, chitin and chitosan derivatives, carrageenans and gellans.
Dependencies are inferred from the claim text.