Table 1.

Variables and Their Coded Levels Utilized in the CCRD Matrix

Independent Variables	Units	Coded Levels of Variables
		−2	−1	0	+1	+2
Overhead stirring time, A	min	80	120	160	200	240
Shear time, B	min	10	15	20	25	30
Shear rate, C	rpm	800	2000	3200	4400	5600
Cycle of homogenizer, D	cycle	8	11	14	17	20