What question did this study set out to answer?

The aim is to develop an efficient extraction process for polyphenols from dried olive pomace using eco-friendly solvents.

June 7, 2026WasteOpen Access

Solvent Survey and Acidification Effects on the Recovery of Main Antioxidant Polyphenols from Dried Olive Pomace

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Randomized trial examines the impact of solvent and acidification on polyphenol yield from olive pomace, suggesting enhanced extraction methods.

The aim is to develop an efficient extraction process for polyphenols from dried olive pomace using eco-friendly solvents.
Compared various environmentally benign solvents for polyphenol extraction efficiency.
Selected 40% aqueous isopropanol and examined effects of acidification with sulfuric, hydrochloric, and oxalic acids.
Utilized liquid chromatography-tandem mass spectrometry for component analysis.
40% isopropanol with 10% oxalic acid yielded 27.1 mg caffeic acid equivalents per g dOP (p < 0.05).
Process severity, including residence time and temperature, directly correlated with polyphenol yield and antiradical activity.
Extract contained hydroxytyrosol and luteolin, suggesting solvent choice diversifies composition.

Ghazi et al. (2026) studied this question.

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Randomized trial examines the impact of solvent and acidification on polyphenol yield from olive pomace, suggesting enhanced extraction methods.