what are food additives examples?
['Preservatives: ascorbic acid, calcium sorbate, and sodium nitrite.', 'Color additives: fruit and vegetables juices, yellow 5, and beta-carotene.', "Flavors and spices: 'real' vanilla or 'artificial' vanilla.", 'Flavor enhancers: MSG and yeast.', 'Emulsifiers: soy lecithin, mono and diglycerides.']