Table 2.

Box-Behnken matrix.

Run	A	B	C	CaCl2 Concentration [mol/dm3]	Rhamnolipids Concentration [log c]	Ion Cross-Linking Time [h]
1	−1	−1	0	0.05	3.64	24
2	+1	−1	0	0.25	3.64	24
3	−1	+1	0	0.05	5.64	24
4	+1	+1	0	0.25	5.64	24
5	−1	0	−1	0.05	4.64	12
6	+1	0	−1	0.25	4.64	12
7	−1	0	+1	0.05	4.64	36
8	+1	0	+1	0.25	4.64	36
9	0	−1	−1	0.15	3.64	12
10	0	+1	−1	0.15	5.64	12
11	0	−1	+1	0.15	3.64	36
12	0	+1	+1	0.15	5.64	36
13	0	0	0	0.15	4.64	24
14	0	0	0	0.15	4.64	24
15	0	0	0	0.15	4.64	24