Food additive E171: first findings of oral exposure to titanium dioxide nanoparticles

"Present in many products including cosmetics, sunscreens, paint and building materials, titanium dioxide (or TiO2), known as E171 in Europe, is also widely used as an additive in the food industry to whiten or give opacity to products..."

Resource:

http://presse.inra.fr/en/Press-releases/Food-additive-E171