Skip to main content
. 2016 Apr 27;22(4):190–196. doi: 10.1080/13510002.2016.1173327

Figure 1.

Figure 1

DPI treatment efficiently decreased ROS levels in a dose-dependent manner without affecting the growth of L. monocytogenes. (A) ROS level in L. monocytogenes decreased dose-dependently with DPI concentrations. ROS was measured by DCFH-DA, and fluorescence was determined to indicate the ROS level. The ROS level of 0 μM DPI-treated bacteria was set at 100%, and those of the other groups were divided by that of the 0 μM-treated group to normalize the data. One-way ANOVA was used to perform statistical analysis, *P < 0.05, **P < 0.01, ***P < 0.001. (B) CFU of L. monocytogenes was not altered when treated with DPI. CFU of each group was transformed to log CFU. C, MTT assays suggested no considerable changes in bacterial activity under DPI treatment. The absorbance data at 570 nm of each group were normalized with the same method used in (A) and (B).