• What is industrial pressing of oilseeds?
  • Industrial pressing of oilseeds is realized using continuous screw presses. The presses are fed with crude or pre-treated seeds. Types of pre-treatments (thermal pre-treatment, size reduction, mechanical sieving, etc.) differ for various seed species (Carr 1997). Each type of seed pre-treatment provides its own advantages.
  • How to extract oleaginous seeds without solvent?
  • The oil extraction by mechanical pressing is the most common method for continuous treatment of oleaginous seeds without solvent. Different types of presses can be used depending on the purpose (expeller, expander, and twin-screw extruder) and on the capacity range (3 kg h ?1 to 150 t day ?1).
  • How does seed production affect oil extraction process?
  • The increase in the quantity of seed being slightly lower than the increase in oil production, it demonstrates an improvement of oil extraction processes. Generally, the oil extraction is based on two main steps: pressing (solid¨Cliquid expression) and solvent extraction.
  • What is oil extraction process?
  • Generally, the oil extraction is based on two main steps: pressing (solid¨Cliquid expression) and solvent extraction. Mechanical and thermal pre-treatments preceded these processes and contribute to enhance their performances. Depending on the seed species, the oil recovery processes can vary.
  • What is the difference between expeller pressed and cold pressed oil extraction?
  • The difference between expeller pressed vs cold pressed oil extraction is that during the latter process, the fruit/nuts/seeds are pressed using either a bladder press (used with softer fruits), hydraulic press, or low resistance expeller pressing so as not to exceed the 122¡ãF temperature requirement.
  • What is the difference between conventional oil extraction and mechanical pressing?
  • The traditional methods of oil extraction are exhaustive and have low efficacy, while conventional method of mechanical pressing is simple and involves low cost but considered as an inefficient method because of low oil recovery when compared with chemical extraction methods.