A NEW BY-PRODUCT ENRICHED IN PHENOLIC COMPOUNDS, EVALUATED BY UHPLC-HRMS, FROM OLIVE MILL WASTEWATER

摘要

Olive mill wastewater (OMW), a by-product obtained during olive oil extraction, represents an important environmental problem for the high toxicity, the resistance to biodegradation and the high volumes processed. Instead of the pollution, OMW is a rich source of bioactive compounds, polyphenols, which could be found up to 98% of the total content of olive fruits [1]. Hydroxytyrosol is the main detected phenolic alcohol [2, 3], widely known due to the natural antioxidant and anti-inflammatory properties[4]. The aim of the present study is to explore and compare the qualitative and quantitative phenolic profile of two OMW treated by two different techniques: freeze-drying and spray-drying.