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GRAS Food Additives
If Marco Polo were to attempt to bring back spices from the Orient today, he would have more to worry about than pirates. The 13th century explorer now would be required to prove that his cargo is not toxic, does not cause birth defects, and will not interfere with nutrition or affect individuals with allergies--unless the flavorings already are "generally recognized as safe" (GRAS) by the Food and Drug Administration.
GRAS is one of four legal categories set up by Congress under the 1958 Food Additives Amendment to the Federal Food, Drug, and Cosmetic Act (FD&C Act). At the time, knowledge about food science and the potential long-term harmful effects of food chemicals on health were beginning to surface. Congress decided it was not necessary for the food industry to prove the safety of substances such as salt, sugar, and spices intentionally added to foods if they were already generally regarded as safe by qualified scientists.
A GRAS substance, therefore, is one that has a long, safe history of common use in foods, or that is determined to be safe based on proven science. If, however, new evidence suggests that a GRAS substance may no longer be safe, the FDA can prohibit its use or require further studies to determine its safety.
Some substances may be GRAS for one use, but not for others. For example, some uses of a food substance are intended for a narrowly defined population, such as newborn infants who consume infant formula as the sole item of the diet. In this case, there may be special considerations associated with that population, but not with general use of the food substance.
Manufacturers add substances to foods to prevent spoilage or to enhance appearance, taste, texture, or nutritive value. Without them, cakes wouldn't rise, salt would lump, bread would mold more easily, ice cream would separate into ice crystals, and marshmallows would harden into bite-sized rocks. Food additives allow us to enjoy a variety of safe, wholesome, and tasty foods all year round. They also help make convenience foods readily available.
The FDA approves new ingredients for use in the food supply based on reviews of extensive scientific research on safety. To market a new food additive, a manufacturer must first petition the FDA for its approval. The petition must provide convincing evidence that the proposed additive performs as it is intended. Animal studies using large doses of the additive for long periods often are needed to show that the substance would not cause harmful effects in people when eaten in expected amounts. Studies of the additive in humans also may be submitted to the FDA.
If an additive is approved, the FDA issues a regulation that may include the types of foods in which it can be used, maximum amounts to be used, and how it should be identified on food labels. To further assure safety, the FDA may require the manufacturer to monitor its use. All additives are subject to ongoing safety reviews as scientific understanding and methods of testing continue to improve.
If ingredients such as new sweeteners are added to conventional foods without being approved by the FDA, the food may be considered adulterated or misbranded. The FD&C Act prohibits marketing conventional foods containing ingredients that are not either GRAS or newly approved by the FDA, as well as health claims made about their use on the product's labeling.
Other than pesticides and animal drugs, substances added to foods fall into four legal categories.
GRAS or prior-sanctioned status does not guarantee a substance's safety. Sometimes new evidence shows that a substance may not be as safe as it was commonly thought to be. If new data suggests that a substance under either of these categories may be unsafe, the FDA may take action to remove the substance from food products or require the manufacturer to conduct studies to evaluate the newly raised concern.
By Carol Rados
FDA Consumer magazine: March-April 2004 Issue
FOR MORE INFORMATION
The FDA Center for Food Safety and Applied Nutrition
"Everything" Added to Food in the United States (EAFUS database)
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