I want to measure the antioxidant capacity of a cream and encapsulated cosmetic product. Can I apply Dpph analysis? When I examined the studies, I saw that antioxidant capacity was measured by dpph analysis on plant or fruit extract. The process is carried out under certain conditions by adding dpph methanol solution to the extract. Can I process my final product, the cream, in the same way?
In summary: How can I measure antioxidant capacity of cream and encapsulated products?
Thank you for your help in advance