§ 174.537 HPPD–4 protein; exemption from the requirement of a tolerance.

Residues of the HPPD–4 protein, which is a modified protein derived from the 4-hydroxyphenylpyruvate dioxygenase enzyme of Pseudomonas fluorescens, in or on all food commodities are exempt from the requirement of a tolerance, when the HPPD–4 protein is used as a plant-incorporated protectant inert ingredient.