Fig. 11.

The linear fitting of SPR signals for S. typhimurium and E. coli samples. The concentrations for S. typhimurium are 7.1 × 104, 7.6 × 106, 7.6 × 107, 2.4 × 108, and 2.4 × 109 CFU mL⁻¹. The concentrations for E. coli are 5.8 × 108, 2.4 × 109, 1.1 × 1010, 2.2 × 1010, and 5.3 × 1010 CFU mL⁻¹