Friday September 22 4:11 PM ET Kraft Recalls Taco Bell Shells with Biotech Corn NORTHFIELD, Ill. (Reuters) - Philip Morris Cos.' (NYSE:MO - news) Kraft Foods unit said on Friday it is voluntarily recalling all Taco Bell Home Originals taco shell products sold in U.S. grocery stores nationwide. Tests performed by an independent laboratory found, in certain samples, the presence of a variety of corn that Kraft had not specified for the product and which is not approved by U.S. regulators for use in food, Kraft said. The U.S. Food and Drug Administration (news - web sites) and the Environmental Protection Agency said earlier this week they were jointly investigating allegations by an anti-biotech coalition that a variety of gene-spliced corn that is not approved for human consumption had slipped into Taco Bell shells sold in a Maryland grocery store. Kraft said at this point there appears to be no evidence of adverse health effects from the corn variety, known as StarLink. The Bt corn variety was developed by Aventis SA (AVEP.PA) of Strasbourg, France. It was approved in the United States in 1998 for use only in animal feed because it contains a protein that might be an allergen. Bt corn is spliced with a naturally occurring plant pesticide known as bacillus thuringiensis. The products being recalled are: Taco Bell Home Originals 12 Taco Shells, Taco Bell Home Originals 18 Taco Shells and Taco Bell Home Originals Taco Dinner containing 12 shells, sauce and seasoning. Consumers who have purchased the products should not eat them, and should return the packages to the store where they were purchased for a full refund, Kraft said. More information is available in a special report at http://www.kraftfoods.com, or consumers may call 1-800-433-9361 from 0800 to midnight EDT. Kraft is licensed by Taco Bell to use the name on taco shells sold only in supermarkets. Kraft buys finished taco shells for the Taco Bell line from Sabritas Mexicali, a subsidiary of PepsiCo Inc. (NYSE:PEP - news) in Mexicali, Mexico. Sabritas buys corn flour for the product from Azteca Milling L.P., which processes the flour in its Plainview, Texas, mill, Kraft said. The specifications for the corn Azteca purchased for the taco shells were confined to several varieties of conventional yellow corn and did not include the StarLink corn, Kraft said. Kraft said it is cooperating with FDA to determine how the StarLink corn became mixed with the product ingredients. The company will discontinue production of the taco shells until it is assured the raw materials and finished products from the suppliers comply with regulatory requirements.