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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
Economic data
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
Bibliography
Regulations
Commission Decision 96/281/EC of 3 April 1996 concerning the placing on the market of soybeans (Glycine max. L.) genetically modified for resistance to the herbicide glyphosate submitted in accordance with Council Directive 90/220/EEC. Official Journal of the European Communities, L 107, p. 10-11 (April 30, 1996).
Directive 2001/18/EC of the European Parliament and of the Council of March 12, 2001...
Standards
American Oil Chemists Society (AOCS)
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Soybeans :
determination of protein content (%), AOCS method Ac 4-91 ;
determination of total oil content (%), AOCS method Ac 3-44 ;
moisture content...
Triturators, builders
These lists are not exhaustive.
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Soybean crushers
Archer Daniel Midlands (USA, South America, Europe, China) http://www.admworld.com
Bunge (United States, South America, Europe) http://www.bunge.com
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Organizations
Grain and Feed Trade Association (GAFTA) http://www.gafta.com
Federation of Oils, Seeds and Fats Associations (FOSFA) http://www.fosfa.org
Chicago Board of Trade (CBOT) http://www.cbot.com
...
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