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Durum wheat

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Durum wheat is a unique species of grain used widely in food production. It is known by the scientific names Triticum durum or Triticum turgidum subsp. durum. In Latin, the word durum means "hard." This name describes its physical resistance to being milled. It is the second-most cultivated wheat species on Earth. However, it represents only 5 to 8% of total global wheat production. It is a vital crop for many cultures, especially in the Middle East and North Africa.

Treccioni bulk
Treccioni bulk

The genetics of durum wheat are quite complex. It is a tetraploid species, which means it has four sets of chromosomes. This results in a total of 28 chromosomes. This differs from common bread wheats, which are hexaploid with 42 chromosomes. Scientists believe durum formed through intergeneric hybridization. This process involved two different diploid grass species. One was T. urartu, which has an AA genome. The other was a B-genome diploid related to Aegilops speltoides. This combination created an allotetraploid species with four sets of chromosomes from unlike parents.

Treccioni bulk
Treccioni bulk

Producing usable grain from durum requires four specific stages. First, the wheat undergoes cleaning to remove broken kernels and foreign material. Second, it goes through tempering. During tempering, moisture is added to the grain to reach a specific level. This toughens the seed coat, which helps separate the bran from the endosperm. Third, the wheat is milled through a complex process of repetitive grinding and sieving. Finally, the wheat is purified. Proper purification ensures a high semolina yield and minimal bran powder.

Treccioni bulk
Treccioni bulk

There are different varieties of durum wheat used for different purposes. Most modern production focuses on amber durum. These grains are larger than other wheat types. They contain extra carotenoid pigments that give them an amber color. The endosperm, or the starchy inside of the grain, is also yellow. This yellow color is what gives pasta its distinct hue. Another variety is red durum, which is grown mostly for livestock feed. Some subspecies, like T. d. turanicum, show more genetic diversity than domesticated varieties.

Treccioni bulk
Treccioni bulk

Durum is highly valued for its specific nutritional and physical properties. In defatted flour, durum contains about 12% total protein. This is slightly higher than the 11% found in common wheat. It also yields 27% extractable, wet gluten, compared to 24% in common wheat. When the endosperm is ground, it creates a granular product called semolina. Semolina is used for premium breads and pastas. Interestingly, semolina is one of the few flours that is purposely oxidized to improve its flavor and color.

Treccioni bulk
Treccioni bulk

This grain is the foundation for many famous international dishes. Commercially produced dry pasta is made almost exclusively from durum semolina. In North Africa and the Levant, coarsely ground durum is used for couscous. Many Levantine dishes rely on it, such as tabbouleh, kibbeh, and bulgur. In the Middle East, it is used for flat, round breads. In South Asia, it is used for products called rava or sooji. Even in Europe, it can be used for making pizza or torte.

Treccioni bulk
Treccioni bulk

The history of durum wheat stretches back thousands of years. It was developed from domesticated emmer wheat strains. These strains were grown in Central Europe and the Near East around 7000 BC. The use of wheat to produce pasta was recorded as early as the 10th century. A writer from Cairo named Ibn Wahshīya described this process. Later, in the 15th century, North Africans called the product itrīya. This term eventually led to the Italian word "tria."

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