TABLE 1.

H2O2 production by different Lactobacillus speciesa

Lactobacillus species (no. of isolates tested)No. of species that produced the following amount of H2O2 (mg/liter):
Negative1-33-1010-3030-100
L. gasseri (27)061362
L. crispatus (21)001542
L. vaginalis (16)01672
L. jensenii (15)00339
L. oris (2)00110
L. casei (1)10000
L. rhamnosus (1)00100
L. fermentum (1)10000
L. delbrueckii (1)00001
L. reuteri (1)00100
L. acidophilus (1)00100
Unidentified (5)00122
  • a In the group including all women (n = 73), various maximum levels of H2O2 production from isolates were observed, as follows: negative, 12 women; 1 to 3 mg/liter, 2 women; 3 to 10 mg/liter, 22 women; 10 to 30 mg/liter, 19 women; 30 to 100 mg/liter, 18 women. In the group including women with chorioamnionitis data (n = 37), various maximum levels of H2O2 production from isolates were observed, as follows: negative, 8 women; 1 to 3 mg/liter, 2 women; 3 to 10 mg/liter, 8 women; 10 to 30 mg/liter, 9 women; 30 to 100 mg/liter, 10 women.