Problematic Ingredients

Question

According to the Celiac website, glycerides (mono- and di-), artificial flavors and colors and vegetable protein are all potentially wheat-based ingredients. This is obviously a scientific statement which may or may not be in accordance with the Torah definition of chamets (i.e., these items may be inedible.) Are these ingredients problematic for pesach? 2) If they are not edible, is there a problem of achshevei once they are put into a food, or is it OK as long as you don't intend to be Machshiv that particular ingredient?