• How is oil extracted from soybeans?
  • Due to the moderate oil content (18 ¨C 23%mass) , it is mandatorily recovered from soybeans by solvent extraction . Currently, industries adopt a continuous-countercurrent-multistage extractor for oil extraction from vegetable oilseeds.
  • How is soybean oil extracted in a continuous and countercurrent process?
  • Extraction of soybean oil in a continuous and countercurrent process. Multistage extraction was experimentally reproduced from batch single-stage assays. The process efficiency was mainly limited by the oil solubility in the solvent. The minimum solvent mass flow and the number of ideal stages were calculated.
  • How is soybean processed?
  • Modern soybean processing starts with solvent extraction to obtain crude oil and defatted meal. Most defatted meal is used for animal feed and only a small portion is further processed into different types of soy protein products for human consumption (see Chapter 8). Crude oil contains variable amounts of nontriglyceride materials.
  • What is deodorization in soybean oil production?
  • Deodorization removes free fatty acids and volatile compounds from the feedstock . Solvent extraction and expelling are the main processes used in soybean oil production. Hexane is currently the leading solvent in extraction , .
  • How is defatted soybean flour extracted?
  • The remaining solvent within the soybean matrix is removed via heat evaporation. Mechanical extraction can also be employed; however, compared to solvent extraction, the oil yield is not as lucrative. Defatted soy flour refers to the same material as defatted soybean flakes, but with a finer particle size.
  • How is oil extracted from soy flakes?
  • During solvent extraction oil is removed from the soy flakes by an organic solvent to form an oil/solvent mixture called a miscella. The oil is recovered from the miscella by removing the solvent by steam stripping. Most commercial oil extraction is currently by hexane extraction, but other solvents have been considered.