Heme and menaquinone induced electron transport in lactic acid bacteria

Table 2 Heme-stimulated growth of lactic acid bacteria

Species		-		+heme
		OD600	pH	OD600	pH
Lactococcus lactis	MG1363	3.52	4.39	5.36	5.16
Enterococcus casseliflavus	DSM 4841	1.13	6.09	3.56	4.83
Streptococcus uberis	B1118	0.91	5.93	2.00	5.17
Carnobacterium divergens ¹	DSM 20589	0.48	6.49	2.25	5.48

¹has a high heme-dependent catalase activity
Lactic acid bacteria were grown aerobically in the presence (+heme) or absence (-) of heme (2 μg/ml). A clear increase in biomass yield is visible after a 48 hour incubation period. The experiments were performed at least in four-fold and the data shown represent averages.

ISSN: 1475-2859