Biotech Updates

Bt eCry3.1A Protein in Corn Receives U.S. Temporary Exemption

March 18, 2011

The US Federal Register has issued a temporary exemption from the requirement of a tolerance for the Bacillus thuringiensis eCry.1Ab protein in corn as well as on the food and feed commodities of corn such as field corn, sweet corn, and pop corn.

The issuance was a response to the application of Syngenta Seeds Inc. to the US Environmental Protection Agency to extend the temporary tolerance exemption set to expire on June 1, 2012 which is now renewed to expire on March 1, 2013.

This regulation eliminates the need to establish a maximum permissible level for residues of Bacillus thuringiensis eCry3.1Ab protein in corn.

The issuance can be accessed at