Encapsulation of carrot waste extract by freeze and spray drying techniques: An optimization study

Abstract Carotenoids were recovered from carrot processing waste using sunflower oil. Simplex centroid mixture design was applied for the optimization of wall material formulations (whey protein/maltodextrin/inulin) encapsulation extract by freeze drying (FD) and spray (SD). The optimal materials pure whey protein , 71 g/100 g - 29 g/100 g inulin mixture, respectively, showing total carotenoids 1.31 0.87 mg ?-carotene/100 g, efficiencies 63.69 g/100 g 53.78 g/100 g, ?-carotene bleaching antioxidant capacities 70.06 41.23 ?mol TE/100 g. dried encapsulate showed best hygroscopicity, oxidative stability colour properties, while had lowest water activity, moisture content particle size. morphological properties encapsulates assessed. techniques tested a big potential preparation functional food with improved nutritional, bioactive properties.