Fig. 7
From: Colorimetric bacteria sensing of Pseudomonas aeruginosa using gold nanoparticle probes
The absorbance spectrum obtained before (1) and after (2–7) adding the gold NP-bound probes to the DNA isolated from P. aeruginosa (2) and bacterial species selected as negative control (3) Escherichia coli, (4) Staphylococcus aureus, (5) Staphylococcus epidermidis, (6) Acinetobacter baumannii, and (7) Enterococcus faecalis). Adding the gold NP-bound probes to the DNA of negative control bacteria did not lead to any alteration in maximum absorption length at 524 nm