Table 1 The confirmative results on spore detection by DPA fluorimetry assay of B. subtilis MA139 and B. licheniformis BL20386 compared with Plate counting assay
Sampling time (h) | B. subtilis MA139 concentration (CFU/mL) | B. licheniformis BL20386 concentration (CFU/mL) | ||
|---|---|---|---|---|
DPA fluorimetry assay | Plate counting assay | DPA fluorimetry assay | Plate counting assay | |
12 | (4.35 ± 0.21) × 104 | (4.05 ± 0.35) × 104 | (5.85 ± 0.63) × 104 | (5.55 ± 0.78) × 104 |
24 | (5.65 ± 0.21) × 105 | (5.50 ± 0.36) × 105 | (8.30 ± 0.28) × 105 | (7.90 ± 1.27) × 105 |
36 | (4.32 ± 0.11) × 107 | (3.80 ± 0.35) × 107 | (4.70 ± 0.14) × 107 | (4.30 ± 1.27) × 107 |