Food-grade or "undegraded" carrageenan is on the Food and Drug Administration's (FDA's) list of items that are "Generally Recognized as Safe (GRAS)," and the Association of American Feed Control Officials (AAFCO) defines it as an acceptable emulsifier, stablizer, and thickener. It's used not only in pet food, but also in hundreds of other products, including beer, ice cream, jelly, diet soda, yogurt, toothpaste, shampoo, and gel air fresheners. Carrageenan is often used in vegetarian and vegan food products as a substitute for gelatin. It's even permitted as an ingredient in organic foods. However, in the European Union, its use in infant formulas is prohibited.
The Dangerous Ingredient Hiding in Your Pet's Food
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