Figure 6From: Label-free NIR-SERS discrimination and detection of foodborne bacteria by in situ synthesis of Ag colloids a SERS spectra of L. innocua at different concentrations (from 103 CFU/mL to 105 515 CFU/mL) and Nanopure™ water as a control. b Plot of the SERS peaks intensity at ∆v = 960 cm−1 (I960) against the bacterial concentration of L. innocua. Back to article page