The manufacturing process of tofu is complex, involving specific stages. The first step is to obtain soy milk, which is also a product for final consumption. In this case, the preparation is performed with some modifications, such as the thermal inactivation of lipoxygenase enzymes, with or without the addition of sugar and flavorings.Heat treatment of grains may decrease protein solubility, affecting tofu yield. Therefore, inactivation is not necessary in order to manufacture tofu. Soybean cultivars without lipoxygenases could be a good modification in tofu making, by improving flavor and maintaining hydration of the grains