Generally speaking, corn will be yellow when cooked, but after we cook the corn, we will find that it turns red. This may be because too much baking soda is added. If too much is added If the baking soda corn changes color, it means it has gone bad. It is not suitable to continue eating it at this time, otherwise it will be harmful to health.

In addition, if it turns red when cooked without baking soda, it is probably normal and you can still eat it. It will not contain toxins. However, if in addition to the redness, there is an abnormal smell, Then you need to eat it with caution to prevent harm to the body.

The essence of the discoloration of corn after steaming is that the starch substances in the corn kernels have changed their properties. When the corn kernels are pinched by hand when they are raw, white juice will ooze out. When cooked with water, the white juice will solidify into a solid state. During this process, the starch material in the corn kernels actually changes its properties.

During cooking, the sugar in the corn kernels changes color due to the high temperature of cooking. This is generally a normal phenomenon, but if there is an abnormal smell, you need to be careful when eating it to prevent it from being sold by unscrupulous traders. Injured by some unknown treatment methods. During the process of cooking corn, the corn kernels are boiled in high-temperature water and the water in the corn is lost. The starch material in the corn actually changes in properties. At the same time, the sugar in the corn kernels changes in color under the action of the high temperature of cooking. , turned red.

There is also a reddening situation. This is because the corn has been left for a long time, and the starch in it has been fully oxidized and chemical reactions have occurred. Although it is not fresh, in order to avoid food waste, it is still possible to clean it well. Food.

Extended information:

How to cook delicious corn?

Whether it is fresh corn or frozen corn, when cooking, do not peel off all the corn husks, leaving a few layers of inner skin and whiskers, so that the cooked taste will be fragrant. To cook corn, put it in cold water. When cooking, add a little salt to make the corn taste sweeter.

How to preserve corn?

Peel off the outer thick skin of the corn, leaving three layers of inner skin to protect the corn silk. Put it in plastic wrap or a plastic bag, seal it without washing, and then store it in the freezer of the refrigerator. You can Stores for a long time and remains very fresh.