Fruit-Enhanced Resistance to Microbial Infection Induced by Selective Laser Excitation

Figure 2

ATR-FTIR spectra of resonant and nonresonantly irradiated samples. (a) ATR-FTIR spectrum of resonantly irradiated samples (solid black line) versus nonresonantly irradiated samples (dashed red line). (b) Difference between the resonant and nonresonant ATR–FTIR spectra (blue line). Notice how the resonant radiation has a bipolar effect. While significant enhancement in the absorbance intensity is observed over the 3000–3600 cm⁻¹ wideband, a significant reduction is observed for other bands as, for example, those peaking at 2925 cm⁻¹, 2854 cm⁻¹, and 1701 cm⁻¹. See text for comments.

(a)

(b)