FIG. 4.
Ability of L. plantarum LA 10-11 cells grown at pH 5.0 (A) and pH 7.0 (B) to maintain a ΔpH at various external pH values after different durations of pressure treatment at 250 MPa. Symbols: •, 0 min; □, 0 min with the addition of 1 mM DCCD; ▴, 10 min, survival 99% (A) and 3.6% (B); ▿, 20 min, survival 41% (A) and 0.11% (B); ⧫, 80 min, survival 6.8% (A) and 0.0032% (B); —, line to indicate pHin = pHout. The percent survival is calculated by [N (number of cells after pressure)/N (number of cells before pressure)] × 100.