Table 2.

The hydrogen sulfide and methyl mercaptan concentrations in spent culture medium (ng/mL).

Pg strain	Culture medium	Hydrogen sulfide		Methyl mercaptan
		24 h	48 h	24 h	48 h
ATCC 33277	Pg	0.45	0.86	11.45	87.34
	Pg + Ef WB2000	0.94	1.49	2.38	1.53
ATCC 53978 (W50)	Pg	0.87	2.20	3.40	507.27
	Pg + Ef WB2000	1.44	2.91	4.36	2.92
ATCC BAA-308 (W83)	Pg	0.68	2.46	62.53	558.22
	Pg + Ef WB2000	1.75	2.83	6.61	4.32
2-1	Pg	0.43	2.18	1.70	164.44
	Pg + Ef WB2000	1.11	2.03	3.26	2.81
7-1	Pg	0.86	9.24	58.18	799.95
	Pg + Ef WB2000	2.06	2.44	6.03	4.05

Pg: Porphyromonas gingivalis; Ef: Enterococcus faecium.