Research Article
Sand Improvement by Surface Percolation Method Using Urease-Containing Substance Extracted from Soybean Seed
Table 4
Results of experiments to compare enzyme activity at different extraction temperatures.
| Test | Test1 | Test2 | Test3 | Test4 | Test5 | Test6 |
| Extraction temperatures (°C) | 15 | 17 | 20 | 25 | 28 | 30 | Urease activity (mS/cm/min) | MUS | 1.18 | 1.62 | 1.55 | 1.4 | 1.2 | 1.1 | Filtered MUS | — | — | 1.5 | 1.2 | 0.46 | 0.34 | UCE (filtered and centrifuged MUS) | 1.2 | 1.613 | 1.55 | 1.1 | 0.52 | 0.273 |
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