Properties of starch nanoparticle obtained by ultrasonication and high pressure homogenization for developing carotenoids-enriched powder and Pickering nanoemulsion

Abstract The effect of ultrasound (US) and high pressure homogenization (HPH) on starch nanoparticles and their ability to stabilize Pickering nanoemulsion of carotenoids and bioactives-enriched olive oil was evaluated. The carotenoids used in nanoemulsion were extracted from the peel of passion fruit (Passiflora edulis). As the US treatment time increased, mean particle size decreased from microsize to 340 nm and subsequent HPH treatment of this suspension caused further decrease in particles size (