(PEF) Pulsed Electric Field Extraction
PEF is a new and green technology for extracting valuable compounds from
wastes and food-agricultural by-products. The pulsed electric field is
applied to the material between two electrodes with a pulsed amplitude.
In this system, the pulse amplitude changes from 100-300 V/cm to 20-80
kV/cm with low energy 10-20 Kj/Kg. The process takes place at ambient
temperature or slightly higher than ambient temperature in less than 1
second (microseconds or milliseconds). In this process, by exposing
plant cells to a pulsed electric field, cell membranes are damaged and
form temporary or permanent cavities (figure 13). The process of
damaging cells and forming cavities with electricity is called
electroporation [77, 78].