Recovery of Bioactive Compounds from Exhausted Olive Pomace

Abstract

Exhausted olive pomace (EOP) is a residue derived from the olive pomace oil industry. One of the main components of this agro-industrial residue is the extractive fraction which contains non-structural components such as bioactive compounds. In this work, different extraction methods, including green technologies, have been compared to evaluate the extraction of antioxidants from EOP: hydrothermal extraction, aqueous accelerated extraction, organosolv extraction and extraction with aqueous salt solutions. The extracts obtained were characterized regarding the content of total phenols by the Folin-Ciocalteu method. After characterization, hydroxytyrosol was found to be one of the potential active compounds in EOP.