How are cornflakes made?

In this short article, we will provide an answer to the question “How are cornflakes made?” and the information on the health benefits and uses of corn flakes.

How are cornflakes made?

The steps involved in producing cornflakes are classified into five categories:

  1. Corn grits preparation
  1. Putting the components together
  1. Extrusion/cooking
  1. Flaking
  1. Roasting and drying
  1. Packaging

1. Corn Grits Preparation

The whole kernel is used in the boiling method, to begin with. The boiled kernels are then dried, rolled, and roasted in a multistage process that takes many weeks to complete.

There are two methods for boiling: the classic method and the under-pressure method.

While the Hydrothermal process is taking place, the maize is being steamed within the cooker. Due to the rotation of the cooker, the kernels are dried uniformly throughout the entire surface. The remainder of the rolling procedure can now be accomplished straightforwardly.

It is necessary to perform pre-drying on a perforated floor. The cooked grits are dropped and mixed with the assistance of four revolving blades. After they’ve been blended, a vertical flow of air aids in drying them off more quickly.

2. Putting the components together

Following the acquisition of corn grits, the following stage of cornflake production is initiated.

Cooking maize grits in a cooker begins with the addition of malt, sugar, and salt after the grits have been weighed. All of the dried components, including the grits, emulsifiers, and salt, are incorporated in a large mixing bowl. It is permissible for a process known as gelatinization to take place.

Once the grits have been allowed to cool and dry, they are ready to be cooked.

3. Extrusion/Cooking

If the corns are not prepared traditionally, the extrusion technique is employed. The typical method of cooking corn flakes is in a rotating steam cooker until they are a golden brown color and crispy.

In contrast to the extrusion process, in which individual flakes are roasted, the grits are only loosely held together in this method of preparation. As a result, it must go through a delumping treatment to be repaired. It will be necessary to chill and dry the grits after they have been separated from one another during separation.

The unique flaky shape of maize is obtained with the use of an extrusion technique. The product is transferred to a twin-screw extruder for further processing. A combination of heat and shear forces is employed in the process. Following the thermomechanical treatment, the homogenous product is forced out of the extruder’s die by a screw.

4. Flaking

Grits are formed into flakes after being put over rollers and rolled into a ball. A precise roller with hydraulic compacting pressure ensures that the quality of the corn flakes produced is of the highest possible standard.

Moving forward, the product will be flaked in a flaking machine. The flaking device is comprised of a pair of thermo-regulated cylinders that rotate in opposite directions. They are then allowed to cure before being subjected to additional treatments such as sugar glazing and varnishing.

5. Roasting and drying

It’s time to roast and chill the flakes now that they’ve been prepared. Since the flakes are still soft, they will need to be roasted in the oven to dry them even further.

Corn Flakes are now roasted in suspended hot air by rotating a perforated drum at a high enough speed to cause hot air to escape through the holes. The speed of the drum and the size of the perforations have an impact on the quality of the flakes. 

The flakes remain suspended as long as the airflow is steady. With the help of a rolling drum, golden and crispy flakes can be produced in around 90 seconds. As the flakes are conveyed away on a conveyer belt, cold air is pushed over them to cool them.

6. Packaging

Corn flakes are sold in pre-measured quantities in bags, boxes, and cartons of various sizes. In cereal packaging, moisture-proof liners made of high-density polyethylene are used to keep the cereal fresh. Any moisture that comes into touch with these breakfast cereals has the potential to degrade their nutritional value. Cereal packaging is made possible by the use of water-based emulsion adhesives.

Following that, the bags are carried to printed cartons, which are then ready for customer distribution to be completed.

What are the benefits of corn flakes in terms of health?

Corn flakes are a good source of carbohydrates, as well as a good supply of iron. Gluten-free, they make a delicious gluten-free breakfast option for individuals who are looking for gluten-free alternatives.


In this short article, we provided an answer to the question “How are cornflakes made?” and the information on the health benefits and uses of corn flakes.


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