Influence of Pulsating Electric Field (PEF) pre-treatment on the extraction efficiency of phenolic compounds from grape marc

Abstract

The extraction efficiency of bioactive compounds (CBA) can be increased by using the pulsating electric field (PEF) due to the electroporation phenomenon, which influences the permeability and rupture of cell membranes. This phenomenon facilitates the extraction of soluble intracellular compounds without significant increase in temperature, without chemical or physical changes in the plant matrix. The aim of the research was to establish the influence of PEF and extraction temperature (t) on tannins content extraction (CT), antioxidant activity (AA) and the composition of red grape seed extracts (EtOH, 60% (v / v).