An important aspect of the safety assessment of genetically modified crops to be used for human food and animal feed is the product composition and suitability to industrial processes (technological value). Four maize hybrids that have been modified genetically to confer levels of resistance to European maize borer and/or tolerance to glufosinate or glyphosate herbicides were investigated in comparison with their respective parental lines. Samples of maize grain were processed in a dry-milling pilot plant at a 150-kg scale into milling fractions such as hominy, grits, semolina and germs. The composition of the maize grain and milling fractions of each genetically modified hybrid was compared to that of the parent variety and to published values for conventional commercial maize hybrids. The nutrients measured on grains were: starch, cellulose, proteins and lipids. Amino acid and fatty acid profiles were also determined on grains. Physical characteristics of grains were: kernel weight, specific weight, kernel size, Promatest, hominy and semolina yields. Milling fractions were submitted to conventional processing at a pilot scale: semolina was processed into extruded products, grits were fermented and processed into beer; maize oil was extracted from germs. Technological parameters of the processes were recorded and intermediate and end products were analyzed using methods common to maize products. On the basis of the whole set of data collected, the results indicate that each genetically transformed hybrid is compositionally and technologically equivalent to the parental line and that all samples fall into the range of conventional maize hybrids.