Expressed per kg of flour, the content of the total flavonoids and anthocyanins in the blue-standard corn cookies with 1.25 g/100 g of ammonium bicarbonate baked at 150°C for 12 min was decreased by 35 and 7%, respectively, in relation to that in control cookies with 0.5 g/100 g of ammonium bicarbonate baked at 200 °C for 7 min.