Characterization and Application of Enterocin RM6, a Bacteriocin from Enterococcus faecalis

Table 1

Preparation of crude extract of enterocin RM6.

Purification step	Volume (mL)	Arbitrary unit (AU/mLa)	Total activity (×10^3 AU)	Recovery rate (%)
Culture supernatant	500	800	400	100
Cation exchange	75	1600	120	30
C18 silica cartridges	60	1600	96	24

aAU/mL: the reciprocal of the highest dilution factor showing a visible inhibitory zone.