• 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.
  • What equipment is used for soybean oil extraction?
  • This approach is advantageous due to its simpler operation and application, since it demands a reduced number of parameters. According to Erickson , the main equipment used for soybean oil extraction in industrial scale are rotocell, stationary basket, horizontal belt, and continuous loop extractors.
  • How were soybeans used in solid-liquid extraction assays?
  • Soybeans were cracked, dehulled, flaked, expanded, and kindly supplied by the Brazilian Company Caramuru Alimentos S.A (Itumbiara/GO, Brazil). The expanded soybean mass (soybean collets) was used as feed in the solid-liquid extraction assays. This material was the same as the one prepared by the industry for soybean oil extraction with hexane.
  • 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 the water extraction profile of soybean collets?
  • The water extraction profile is very similar to the oil one. Moisture existing in the fresh soybean collets (6.22 ¡À 0.06%) was progressively transferred to E, reaching about 3.5% water in the final extract phase ( E1 ). Fig. 5 d shows the residual oil content in R throughout the stages.