Powdered Herbal Extracts by Freeze and Spray Drying: Formulation Design, Processing, and Physicochemical and Antiglycation Properties
Drying and carrier effects may differ among botanical materials, but direct comparisons remain limited. This study compared spray drying (SD) and freeze-drying (FD) across four extract formulations from Alchemilla vulgaris, Mentha × piperita, Urtica dioica, and two 1:1 A. vulgaris-based binary mixtures. Each extract wa...