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