4. Mechanical extraction
For a long time, seeds were crushed simply by pressing. The technical evolution of presses has led to the screw presses we know today. Despite the application of the most advanced techniques, the quantity of residual oil in soybean meal is rarely less than 7 to 8% by mass. As a result, pressing remains more of a preparation method prior to solvent extraction.
Cold or hot pressing
In units with limited capacity, e.g. for soybean oil recovery in line with the local organic production system, a simple cold press is used to recover the oil. Cold pressing eliminates the need to heat, cook or evaporate the product to be pressed, thus preserving valuable vital substances without damaging them. The amount of oil extracted from soybeans by cold pressing remains limited to only 8-9% by mass. As a result, cold-pressing...
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Mechanical extraction
Solvent extraction
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Soybean market
The USA accounted for almost 41% of world soybean production in the crop years of the early 2000s. Average annual production was 74 million tonnes between 2000 and 2003 (table 1 ). The 2001-2002 harvest reached a record 78.7 million tonnes (table
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