Ascorbyl Palmitate What is Ascorbyl Palmitate? Ascorbyl palmitate is a food additive used as an antioxidant. It is an ester of ascorbic acid (Vitamin C) and palmitic acid.¹,² In baking, ascorbyl palmitate is used as an antioxidant or preservant to improve product shelf life of fat-based systems, like frostings and fillings. It [...]