Extraction of bioactives from food processing residues using techniques performed at high pressures

• Focus on SFE, SFF and PLE of bioactives from food processing residues.
• Recent papers (mainly 2014–1015) are reviewed in terms of the different bioactives.
• Ranges of operating conditions and extraction parameters are reported.
• Recent patents (2000–2014) are summarized and briefly discussed.

Food processing residues are often rich in bioactive compounds which, if properly extracted and recovered, can be re-utilized as food supplements or in nutraceutical formulations, with obvious advantages from the health and economical standpoints. High pressure extraction processes can be utilized for such purpose. They are usually performed or using supercritical fluids, namely supercritical CO2 suitable for extracting non-polar solutes, or using pressurized liquids, for instance water capable to extract polar and semi-polar compounds. This short review highlights the application of high pressure technologies for the extraction of bioactives from food processing residues with special emphasis on the most recent works and patents.