Table 1.
Phosphate released, titratable acidity and gluconic acid concentration during solubilisation of tricalcium phosphate over incubation period of 12 days by the P. pseudoalcaligenes (n = 3)
| Days | pH | Phosphate released (μg P ml−1) | Titratable acidity (×10−2) | Gluconate (×10−4 g %) |
|---|---|---|---|---|
| P. pseudoalcaligenes | ||||
| 0 | 7.00 ± 0.01 | 70.50 ± 2.22 | 0 | 0 |
| 3 | 5.03 ± 0.03 | 225.00 ± 5.63 | 7.69 ± 0.10 | 6.42 ± 1.29 |
| 7 | 3.51 ± 0.01 | 565.50 ± 10.67 | 26.40 ± 0.12 | 4.68 ± 1.29 |
| 9 | 3.80 ± 0.05 | 726.50 ± 19.30 | 30.70 ± 0.10 | 3.62 ± 1.90 |
| 12 | 3.90 ± 0.05 | 934 ± 20.14.00 | 32.50 ± 0.13 | 2.20 ± 2.24 |
| B. pumilus | ||||
| 0 | 7.00 ± 0.05 | 72.5 ± 06.24 | 0 | 0 |
| 3 | 5.00 ± 0.03 | 211.5 ± 10.10 | 12.3 ± 0.15 | 10.20 ± 1.76 |
| 7 | 5.03 ± 0.01 | 242.5 ± 14.00 | 14.3 ± 0.30 | 10.20 ± 2.29 |
| 9 | 5.55 ± 0.03 | 385.0 ± 07.50 | 19.0 ± 0.10 | 8.92 ± 1.40 |
| 12 | 5.83 ± 0.02 | 182.5 ± 17.55 | 09.1 ± 0.10 | 6.72 ± 1.15 |
Values are mean of three replications. (P ≤ 0.05; LSD test)