Pulsed electric fields and high-voltage electrical discharge-assisted extraction of biocompounds from vine shoots

Abstract

This chapter deals with the recent advances in the extraction of biocompounds from vine shoots assisted by pulsed electric fields (PEF) and high voltage electrical discharges (HVED). It summarizes the existing research conducted on these viticulture wastes for the recovery of polyphenols and proteins. The efficiency of PEF and HVED in terms of polyphenol and protein extraction was discussed especially with the low energy consumption of these treatments. The effect of both electrotechnologies on the subsequent polyphenol purification step was shown, relating the extraction and the purification processes. The role of polyphenols in membrane clogging was also examined. The possibility of replacing grinding with HVED was proposed since it is a less energy-consuming treatment. The valorization of vine shoots therefore occurred by PEF and HVED assisted extraction of their biomolecules.