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. 2017 Aug 16;7:8325. doi: 10.1038/s41598-017-08449-1

Figure 2.

Figure 2

Measurement of uptake of gallic acid (GA) and its derivatives in E. coli O157:H7 as measured by binding with DPBA. (a) E. coli O157:H7 treated by GA (15 mM) + EDTA (1 mM) solution, GA (15 mM), EDTA (1 mM), GA in phosphate buffer solution (100 mM, pH 7.4), or PG (10 mM) in the presence and absence of UV-A light. Absolute fluorescence values were corrected by subtracting the fluorescence values for samples incubated in water and in dark. (b) The assessment of DPBA sensitivity to binding various compounds in the absence of bacteria. Mean ± SD.