Methods for the nanoencapsulation of β-carotene in the food sector

• Common techniques for the nanoencapsulation of organic compounds are reviewed.
• Several methods for the nanoencapsulation of β-carotene are described.
• Strategies for testing the safety of nanoencapsulated β-carotene are proposed.

Carotenoids are organic pigments naturally synthesized by microorganisms and plants. Several techniques are available for the nanoencapsulation of organic compounds: self-assembly, high pressure homogenization, nanoemulsification, supercritical fluids, etc. The objective of this paper is to review some nanoencapsulation techniques that are compatible with labile compounds, such as β-carotene. Strategies for testing the safety of nanoencapsulated β-carotene are also discussed.