Effects of Chlorophyll-Derived Efflux Pump Inhibitor Pheophorbide a and Pyropheophorbide a on Growth and Macrolide Antibiotic Resistance of Indicator and Anaerobic Swine Manure Bacteria

Figure 5

Effects of pyropheophorbide a (pyp, 0.5 and 50 μg mL⁻¹) alone and in combination with erythromycin (ery, 0.0625 and 2048 μg mL⁻¹) on growth curves of naïve (a), (b), and erythromycin-induced (c) S. aureus ATCC 29213 under aerobic (a) and anaerobic (b), (c) conditions. Values are averages and standard deviations from three repeated experiments.

(a)

(b)

(c)