Table 1.

pH profile for anaerobic killing of S. mutansGS-5 by 10 mM Fe2+

pH−log10(N/N0)a
15 min30 min45 min
92.43 ± 0.84 (3)2.71 ± 1.0 (3)2.66 ± 0.77 (3)
83.56 ± 0.031 (2)4.32 ± 0.76 (2)4.13 ± 0.35 (2)
73.02 ± 0.29 (2)3.61 ± 0.78 (2)4.33 ± 0.89 (2)
62.26 ± 0.51 (2)3.00 ± 0.11 (2)3.45 ± 0.04 (2)
52.10 ± 0.25 (3)2.75 ± 0.17 (3)2.85 ± 0.16 (3)
41.39 ± 0.60 (3)1.53 ± 0.39 (4)1.69 ± 0.19 (4)
  • a Minus log10 of the ratio of the plate count after the indicated exposure times to the initial plate count. Values are averages ± standard deviations, with the number of trials given in parentheses.