A concentration of 100 mM H2O2 is approximately 50-fold higher than lactobacilli are capable of producing even under optimal aerobic, low-antioxidant conditions, and approximately 5,000-fold higher than the estimated H2O2 concentration in vivo.
The level of 100 mM H2O2 is significantly higher than what lactobacilli are capable of producing even under optimal oxygen-rich environments with low antioxidant activity, and far surpasses the estimated in vivo H2O2 concentrations by a factor of approximately 5,000.