Figure 5 | Scientific Reports

Figure 5

From: Exploiting pH-Regulated Dimer-Tetramer Transformation of Concanavalin A to Develop Colorimetric Biosensing of Bacteria

Figure 5

(A) UV-vis spectra of dextran@AuNPs with released Con A in different concentration of E. coli O157:H7. Inset is the photos of dextran@AuNPs mixed with released Con A at the concentration of 0, 102, 103, 104, 105, 106, 107 CFU/mL bacteria. (B) Linear relationship between the absorption change ratio A 635/A 525 and the concentration of E. coli (N = 3).

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