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.