Figure 4.

Degradation at room temperature (21 ± 2 °C) over time of cefquinome, ceftiofur and desfuroylceftiofur in a 1000 ng g⁻¹ spiked fecal sample (n = 3, per time point) in the presence of a 4 µg mL⁻¹ (●), 8 µg mL⁻¹ (-■-) or 16 µg mL⁻¹ (▼) solution of tazobactam (mean ± standard deviation).