Food Additives - An encyclopedia article on food additives, including definitions of the different types.
Food Ingredients First - Industry news and links, supplier directory, product applications and research database.
GrokFood - Comprehensive database of food additives. Includes full text of federal regulations governing the use of substances added to the food supply in the United States.
Leffingwell and Associates - Information on flavor and fragrance materials, industry news, shareware for food additives, and links to papers on olfaction, food science, carotenoids, and odor thresholds.