The Use of D-Optimal Mixture Design in Optimizing Formulation of a Nutraceutical Hard Candy.

The aim of this study was to optimize the formulation of hard candy with antiviral herbal extracts and flowered with peel essential oils. To substitute water fraction, the D-optimal mixture design was used. The optimized mixture fractions of the best hard candy formulation contain extract (10%), Asso extract (3.