Evaluating the intrinsic capacity of oral bacteria to produce hydrogen peroxide (H2O2) in liquid cultures: Interference by bacterial growth media.

Abstract This work highlights the issue of interference by growth media when measuring bacterial H2O2 production. H2O2 was shown to be stable in phosphate buffered saline (PBS) but not in growth media. The protocol used for evaluating the intrinsic capacity of oral streptococci to produce H 2O2 was shown to be reliable.