Table 5.
Predicted values of optimum condition of maximized and minimized responses to var iables by ridge analysis of their response sur face

Responses	Extraction condition
	X1	X2	X3	Estimated responses	Morphology
	Water uptake (g)	24.03	125.55	48.09	0.022	saddle
18.07		197.95	42.50	0.046
Solubility (%)	12.08	182.15	42.44	79.83	maximum
	19.38	152.92	44.30	95.93
Particle size (μm)	14.51	137.00	51.07	5.78	saddle
	21.07	155.71	35.12	13.81