Mecmar S.p.A.

Today, Mecmar is a benchmark for the production of mobile and tower dryers and grain roasters, not only in many European countries but also overseas.

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Soybean processing: what are the main machines used?

The cultivation of soy is an ancient process, the processing of which dates back to about 5000 years ago. Soy was the fruit of the earth revered by the Chinese people and together with rice, wheat and millet it was considered a holy food with incredible nutritional properties.

Today the cultivation of soy is widespread in all countries of the world: in Italy its processing began to take shape around 1800.

Although soy can be used for both human and animal nutrition, its production and processing are mainly intended for livestock farming. With the aim of balancing the diet of animals and optimally responding to their needs for fats and proteins, soy is an excellent ally for a healthy, genuine feed for monogastric, polygastric, cattle, pigs and poultry animals.

Within this short guide, Mecmar will provide you with some more information about soybean processing, in order to understand which machines are mainly used in the drying and roasting phases.

Soybean processing phase: how to obtain high drying performance

Harvested soybeans always need to be cleaned and dried in a few days. Later, it can be further treated through various types of processing, depending on the destination of the product (for example if you want to market it, process it for seeds, or use it for human or animal nutrition). After drying, you can proceed with roasting, rolling, paneling, extrusion, pressing, grinding and more.

Given the great value assumed by soy in recent years, especially for zootechnical feeding, it is essential to know the procedures that allow it to be stored in the best possible way and for long periods of time.

As with any cereal crop, even soybeans at the time of harvest have a level of moisture that needs to be reduced, in order not to compromise its good conservation. The level of moisture of soybeans can typically vary between 18 and 25% at the time of harvest. To be consumed, it is essential to start a drying process that drastically reduces the percentage, with the aim of obtaining a moisture content that does not exceed 13%.

Soybeans need a gentle drying treatment that considers the delicacy that distinguishes this crop. We recommend a drying air temperature of 60 °C. This value is preferable because it allows the soybeans to be dried quickly, without sacrificing optimal drying of the same. The lower the drying temperature, the more delicate the treatment.

Mecmar‘s mobile dryers and tower dryers ensure a uniform and efficient soybeans drying process. On one hand, mobile grain dryers guarantee the best drying performance in all conditions, with both small and large quantities of raw materials to be treated.

Alternatively, the robust and reliable tower dryers base their operation on four fundamental steps – loading, drying, cooling and unloading – guaranteeing optimal drying of soybeans and a considerable reduction in consumption costs.

Soybean roasting: what are the benefits for your crop?

Once the drying phase has been completed, the harvest can move on to the next step relating with the roasting of the legume: this process promotes better digestibility of the nutritional contents and better absorption of proteins.

Soybeans are a natural and important source of high-energy proteins, vitamins, minerals and oils already found in many animal feeds. Roasting makes them even more advantageous:

  • Soybean roasting eliminates trypsin inhibitors, which can be extremely harmful for the digestion of animal proteins in the small intestine
  • Soybean roasting reduces soluble proteins while increasing bypass proteins
  • Through the roasting process, soy keeps all its vitamins and natural fats intact, making them more available from a nutritional point of view for animals
  • Roasting eliminates urease enzymes
  • Roasting increases the palatability of soy: animals prefer the taste of roasted soy over unroasted one.

All the above benefits work together to improve the overall health of the animals, which can lead to better breeding results.

In this way, any protein deficiencies in the animals are overcome: their well-being will benefit, thus leading to a significant increase in the quality of the meat.

Mecmar has a wide range of grain roasters, including electric roasters made with technologically advanced components that ensure ease of use and great performance. The robust design that distinguishes Mecmar roasting systems facilitates their placement within the company and their installation.

The efficiency of the roasting process is guaranteed by the presence of continuous mixing systems in the machine, so that all the beans receive heat from all directions for a very homogeneous roasting. An integrated system of sensors and inspection windows allow you to constantly monitor the processing phase inside the machine, to avoid problems during the roasting phase.

If you are curious to find out more about soybean dryers and roasters, you may be interested in the following articles:


Soybean processing requires attention to detail, professionalism and experience. Dryers and roasters are the ideal machines for the treatment of any type of cereals, including the most delicate ones, such as soybeans. The adoption of high-performance and cutting-edge systems is also the best way to benefit from the innovative technologies made available by the market and always be one step ahead.

The experience gained over the years allows Mecmar to offer the best solutions to obtain an optimal and safe soybean processing.

To find out about all Mecmar drying and roasting systems and understand which model best suits the needs of your reality, contact us: our team will be happy to answer any of your questions.




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