The paper lists the names of the merchandise examined and their titanium dioxide content. Westerhoff recommends that regulators shift their concentrate from the type of titanium dioxide found in paints and industrial processes to food-grade particles, because those are more likely to enter the environment and pose a potential risk to human beings and animals.. Children may consume more titanium dioxide than adults Children may be receiving the highest contact with nanoparticles of titanium dioxide in candy, which they eat in quantities much larger than adults, according to a fresh research.Another microalgae, Haematococcus pluvialis, contains dark red pigment primarily. This pigment is the richest known source of the carotenoid astaxanthin. Only phytoplankton, algae, plants, and certain fungi and bacteria can easily synthesize carotenoids such as for example astaxanthin. Animals, including human beings, must consume carotenoids within their diet. Astaxanthin is found in many types of seafood and is usually what provides reddish-orange color to salmon, shrimp, red seafood, and lobster.