Figure 8: Effect of microwave power (M/Mo) on linewidths (ΔBpp) of EPR spectra of streptomycin (a), gentamicin (b), neomycin (c), sisomicin (d), paromomycin (e), and tobramycin (f), sterilized at 160°C (120 minutes), 170°C (60 minutes), and 180°C (30 minutes). The data for the EPR spectra measured at room temperature 20 minutes after sterilization.