Fig. 5From: Application of Pulsed Electric Energy for Grape Waste BiorefineryDeformation of grape sample ε versus expression time for pressing at progressive pressure increase from 0 to 1 bar with and without PEF. The time evolution of pressure P is also shown. Inset shows PEF-treatment compression chamber. PEF pretreatment was performed before pressing (t = 0 s) (Compiled from Grimi et al. (2009))Back to chapter page