Propyl Gallate should always be avoided because it is a preservative. Often used with BHA and BHT, it can also be found in meat products, chewing gum and chicken soup base too. Sodium Nitrate – another preservative and coloring found in hot dogs, ham, bacon, luncheon meat and corned beef. Various types of cancer are linked to this ingredient. BHA and BHT – this is used to preserve household foods like potato...