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Food bioactives are known to prevent aging, cancer, and other diseases for an overall improved health of the consumer. Nanodelivery provides a means to control stability, solubility, and bioavailability, and also provides controlled release of food bioactives. There are two main types of nanodelivery systems, liquid and solid. Liquid nanodelivery systems include nanoemulsions, nanoliposomes, and nanopolymersomes. Solid nanodelivery systems include nanocrystals, lipid nanoparticles, and polymeric nanoparticles. Each type of nanodelivery system offers distinct benefits depending on the compatibility of nanoparticle properties with the properties of the bioactive and the desired application. Physicochemical properties of nanoparticles such as size, charge, hydrophobicity, and targeting molecules affect the absorption, distribution, metabolism, and excretion (ADME) of nanodelivery systems. The fate of the bioactive depends on its physicochemical properties and the location of its release. The safety of nanodelivery systems for use in food applications is largely unknown. Toxicological studies consisting of a combination of in silico, in vitro, and in vivo studies are needed to reveal the safety of nanodelivery systems for successful applications in food and agriculture.
Borel et al. (Sat,) studied this question.