General research: Dyes used for food are chemically classified as azo, xanthene, triphenylmethane, and indigoid dyes. Although certifiable color additives have been called coal-tar colors because of their traditional origins, today they are synthesized mainly from raw materials obtained from petroleum. Lake dyes for food use are made with aluminum cation as the precipitant and aluminum … Continue reading Your Daily Additives – Dye Week – Aluminum Lake