Hydroxytyrosol (HT) is one of the most powerful natural antioxidants, mainly contained in olive oil and its by-products. Here, a procedure for preparation an HT-enriched sample described. An acidic aqueous extract (pH 1.25) from Olive Oil Dregs (OOD), by-product mills, was prepared by incubation at 37 °C 1 h. The total phenolic content HT amount were 6.24 ± 0.10 mg gallic acid equivalent/g OOD ...

The table olive industry generates high amounts of wastewater annually during the alkaline treatment, fermentation, and washing steps olives. High conductivity salt content, as well organic biophenol contents these waters, is a worldwide problem, especially in Mediterranean region, which major producing area. There wide variety bioactives found derived from processing. main compounds wastewater...