Novel extraction methods
Novel extraction methods are also known as green methods. Green extraction can be defined as follows: Green extraction is based on extraction methods that reduce energy consumption, allow the use of alternative solvents and renewable natural products. Also ensure the safety of the process and the production of a quality product. In general, these types of extraction methods have the following characteristics [56].
  1. selection of varieties and renewable plant resources.
  2. Use an alternative solvent.
  3. Reduce energy consumption.
  4. Production of co-products instead of waste.
  5. ensure the process is safe, robust and controlled.
  6. Production of biodegradable extracts without contamination.
These green methods have led to considering application of new methods include Supercritical fluid extraction (SFE), Subcritical extraction liquids, Enzyme-assisted extraction, Ultrasound-Assisted Extraction (UAE), Microwave-assisted extraction (MAE), (PEF) Pulsed electric field (PEF), Pressurized liquid extraction (PLE) and High voltage electrical discharge (HVED) for the extraction of essential oil.