Objective To accumulate data of trypsin inhibitor activity in genetically modified(GM)foods,in order to assess nutrition of GM foods.Method After studied the dose response relationships among trypsin(TP)-substrate-trypsin inhibitor(TI),an optimal reaction system was set up.Then,TI activities in GM samples including corns and soybeans were determined in comparison with their non-transgenic counterparts.Results Statistically significant differences in TI activity were not identified for most GM samples except...