• What solvent is used to make soybean protein concentrate?
  • It should be noted that other solvents may be required to produce different and specific products; for example, an alcohol-water mixture is used in an additional extraction step (after hexane extraction) to produce soy protein concentrate (or ¡°SPC¡±) by removing the sugars from standard soybean meal (Wang et al., 2004).
  • What is a good residual oil content for a hexane extractor?
  • A minimal residual oil content in the meal coming out of the hexane extractor is a clear benefit for a crushing plant; the more oil yield the better revenue for the crusher. In a modern and efficient extraction plant, a residual oil content ¡Ü?0.5% for soybean meal is expected.
  • What is solvent extraction?
  • Solvent extraction consists in washing the prepared material in a countercurrent multistage process to enable a reasonable quantity of solvent to extract a maximal amount of oil. Major progresses in solvent extraction relate to plant production capacity increases which propelled technological improvements.
  • What is the residual oil content of soybean meal?
  • It is critical to avoid the presence of cracks in order to get reasonable residual oil content in the meal. In a modern and efficient extraction plant (Fig. 9), a residual oil content ¡Ü?0.5% for soybean meal is expected.
  • How much progress has been made in solvent extraction?
  • Major progress in solvent extraction relates to plant production capacity improvement; in the last 20?years, a production limit (nominal capacity) grew from about 2000?MTPD to 22?000?MTPD in a single preparation and solvent extraction plant (Fig. 1).
  • How is crude oil produced in a soybean crushing plant?
  • The crude oil is usually water degummed in the crushing plant which generates an additional flow, consisting of gums (or lecithin). Table 1 presents the main quality parameters (optimal contents) of the major products from soybean crushing.