by applying a back-pressure of 0,1, 2 or 4 bar using a specially designed post-fermentation treatment unit (PTU) (FH Scandinox A/S, Galten, Denmark) as shown in Fig. 1.
by applying a back-pressure of 0,1, 2 or 4 bar using aspecially designed post-fermentation treatment unit (PTU) (FHScandinox A/S, Galten, Denmark) as shown in Fig. 1.