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Change rule of living bacterium content, pH and ORP
| Fermentation time (h) | ||||||
|---|---|---|---|---|---|---|
| 0 | 3 | 6 | 9 | 12 | 15 | |
| Living bacterium content | 1.6 × 106 | 3.2 × 106 | 2.5 × 107 | 7.9 × 107 | 9.2 × 107 | 7.2 × 107 |
| pH | 5.91 | 5.99 | 6.12 | 6.37 | 6.85 | 7.23 |
| ORP (mV) | 66.3 | 61.2 | 46.8 | 22.7 | 3.6 | −12.1 |
