Figure 3.

The effect of natural preservatives on the recovery of PEF-injured S. cerevisiae. Survival fraction of S. cerevisiae after the PEF treatment (20 kV/cm for 200 μs) in citrate–phosphate buffer with pH 4.0 (A,B) and pH 7.0 (C,D), and in the subsequent recovery process incubated at 30 °C for 4 h in mediums with tea polyphenols (A,C) and natamycin (B,D). YPD, non-selective medium; YPD-SC, selective medium. Data are expressed as mean ± standard deviation. Significant differences are indicated by different letters (p < 0.05).