Fig. 4.

Cultured agar plates demonstrating the effects of FLH and SLH treatments inside an agar well diffusion framework. Following appropriate incubation of the seeded microbial layers, the resulting halo diameters were measured to track anti-QS properties in C. violaceum (c) alongside broad antibacterial trends in E. coli (b) and S. aureus (a). Benchmarks for positive and negative controls are identified by the (+) and (−) signs.