Figure 6. Images of S. avermitilis strains without (control) and with nsPEFs treatment grown on YMS agar during 9-day fermentation.

C on the plate represents the S. avermitilis spores without any nsPEFs treatment (control); 5, 10 and 15, respectively, represent the S. avermitilis spores treated by nsPEFs with 5, 10, 15 kV/cm intensities. All pictures were obtained after the plate had been cultured for 3 days at 28 °C.