PEF for vegetable oil extraction

Product examples: Olive oil, nut oil, citrus oil, maize germ oil.

Aim of PEF Treatment: Cell disintegration, resulting in enhanced fermentation processes, controlled release, and higher extraction yields.

Fermentation and Extraction of Olives

PEF treatment can be applied to raw olives at ambient temperature, leading to the softening of olive tissue. The main advantages of this tissue softening include easier olive fermentation and improved cold extraction of the oil. This physical treatment enhances both the quality and yield of the oil. The necessary field strength for olive treatment ranges from 1.0 to 3.0 kV/cm, with energy delivery between 3 and 10 kJ/kg.

Maize Germ Oil

PEF treatment not only enhances the extraction of maize germ oil but also increases the amount of phytosterols in the raw material. To achieve an increase in phytosterols, only mild treatment of maize germs is required. Also see: Phytochemicals.

Cotton Seed Oil

Pulsed electric field processing improves the oil extraction from cotton seeds at ambient temperature through oil pressing. PEF is a physical treatment used to obtain a higher yield. A field strength of 1.0 – 2.0 kV/cm and energy delivery of 10 – 20 kJ/kg is required.

Benefits PEF

  • Increased oil extraction yield
  • Higher process efficiency
  • Improved oil quality
  • Increased amounts of phytosterols

More Information

Pulsemaster has developed industrial-scale equipment, named Conditioner, with treatment capacities up to 50,000 kg/h (110,000 lb/h) for cell disintegration.

PEF + Vegetable Oils?