Xanthan GumXanthan Gum Xanthan gum is a powder milled from the dried cell coat of a microorganism called Xanthomonas campestris grown under laboratory conditions. It acts as a gluten substitute. Xanthan gum is added to salad dressings, canned gravies and sauces, and even ice cream to give these foods a smoother texture. It also has the ability to hold the particles of a food together well which makes it a good stabilizer. It has recently been shown to be a good