Fig. 6

a P. strigosa extract elution profile obtained by FPLC on a Sephadex G-50 column at 280 nm. The column was equilibrated and eluted with 1.6 mM acetic acid at 1 mL/min. b MALDI-TOF of the second fraction (Ps2) after filtration with ultra-centrifugation filters with 10 K cut-off