Figure 6

(a) The intensities of the ATP luminescence measured for the inner outlet (red) and outer outlet (green) solutions after the injection of a milk solution spiked with different concentrations of E. coli bacteria. Concentrations of the control samples that are not spiked with bacteria were labeled “0” for convenience. (b) The intensities of the ATP luminescence, measured for the inner outlet solution after the injection of different bacteria at concentration of 105 cfu/mL at the inner outlet.