• Which solvent is used to extract rapeseed oil?
  • It was also interesting to observe that p -cymene, d -limonene and isopropanol were the most effective solvents for oil extraction from the original rapeseed, and p -cymene, isopropanol and n -hexane were more selective. Table 1. Extracted rapeseed oil yields with various solvents. ISO 659-1988.
  • How is rapeseed oil extracted?
  • The extraction meal is desolventized by desorption and evaporation of hexane through direct and indirect steam injection. The oils are recovered by distillation of miscella, which allows evaporation of volatile solvents by vacuum steam stripping. Fig. 1. Conventional processing procedures for rapeseed oil extraction. Color online.
  • How rapeseed oil is extracted by cold pressing compared to Soxhlet Method?
  • The crude oil extraction degree achieved by cold pressing was 60.8% compared to the Soxhlet method. The rapeseed oil contains predominantly oleic, linoleic, linolenic, and palmitic acids, agreeing with other reported rapeseed oils.
  • How much rapeseed oil can be extracted by cold pressing?
  • A nozzle diameter of 10 mm, a screw frequency of 50 Hz, and a press head temperature of 80 ¡ãC ensured the maximum pressed rapeseed oil yield of 26.65% within the applied experimental domain. The crude oil extraction degree achieved by cold pressing was 60.8% of the rapeseed oil yield obtained by the Soxhlet method.
  • Does solvent type affect rapeseed extraction efficiency?
  • This study investigated the influence of solvent type, i.e.ethanol and isopropanol, at two water concentrations, on rapeseed extraction efficiency and rapeseed meal quality.
  • How to maximize rapeseed oil yield?
  • In the present study, the optimization aimed to maximize rapeseed oil yield by selecting the suitable screw pressing conditions, i.e., the best nozzle diameter, press head temperature, and screw frequency in the applied experimental domain, by employing the desirability function method.