Process for producing a hydrolysate of scutellaria root, which is enriched and standardized with flavonoids of interest, the hydrolysate obtained by such a process, and cosmetic and dermocosmetic applications of such a hydrolysate

A process for the production of a hydrolysate of roots of the genus Scutellaria enriched and standardized in wogonin and baicalein, comprising the following steps:

• (i) activating endogenous enzymes by dispersion, under mechanical stirring and for a period of between 10 minutes and 1 hour, of said roots, in a root/water weight ratio of 0.1 to 0.5;
• (ii) performing an enzymatic hydrolysis of the dispersion obtained in step (i) by thermochemical means, said phase comprising the following steps:
• a) adding a miscible organic solvent of the dihydric alcohol type in a solvent/water weight ratio of 1 to 5;
• (b) heat-treating the reaction medium obtained in step (ii/a) at a temperature of between 40 and 55° C., and for a period of between 20 hours and 50 hours;
• (iii) irreversibly inhibiting the enzymatic activity in the reaction medium obtained in step (ii) by heat treatment at a temperature of between 65° C. and 90° C. and for a period of between 1 hour and 3 hours;
• (iv) adjusting the pH to a value of between 3.5 and 5.5;
• (v) adjusting of the weight of crude hydrolysate by the addition of a solvent of the dihydric alcohol type to obtain a hydrolysate reduced to a dry extract with a content varying from 1.8 to 2.5%.