Anti oxidant natural extracts also filtering ultra violet light consists of ground gevuina avellana shell material subjected to solvent treatment and lyophilisation

摘要

The anti-oxidant natural extract also filtering u.v. light comprises ground Gevuina avellana shell material with extraction by water at pH 4.3, methanol or azeotropic ethanol. After evaporation of the solvent, re-dissolution in water and lyophilisation are carried out.