Fig. 5

SWV response to MAMP in a saliva buffer or b saliva. The MAMP concentration was 0 μg/mL (solid line) or 5 μg/mL (dashed line). The overlayer was treated with 1.0 mg/mL of OX1006 in 0.4 M sodium carbonate buffer (pH 10.8), containing 1.0 M NaCl and 0.1 % TX-100. The SWV procedure consisted of a 10 s wait time after application of 7 μL of sample, then (1) galvanostatic oxidation at 800 nA for 30 s, (2) SWV with start voltage +0.6 V, stop voltage −0.4 V, 4.25 Hz frequency, 2.85 mV step potential and 50 mV amplitude