Nanotechnology is a field of science that has the potential to improve food sustainability and food security. A nanoparticle is usually defined as a particle of matter that is between 1 and 100 nanometers in diameter. Starch nanoparticles are organic nanoparticles made from native starch. The picture illustrates starch nanoparticles containing essential oils and activated charcoal, which may help to extend the shelf life of fruits and vegetables reducing food waste.