Of the 50 tested Lactobacillus strains, 9 strains were capable of producing H2O2, of which the Lac. VFE-14 strain produced highly H2O2 with a concentration of 2.183 mM, followed by Lac. VFE-08 strains (2.081 mM) and Lac. VFE-04 (2.067 mM).