Optimization of Freeze-Drying Process Parameters for Qualitative Evaluation of Button Mushroom (Agaricus bisporus) Using Response Surface Methodology

Table 2

Model coefficients generated by RSM.

Model terms	Ascorbic acid	Antioxidant content	Protein content
A-PDT	0.76	−0.46	0.09
B-SDT		0.09	0.27
C-pressure	−0.40	−0.07	−0.27
D-sample thickness	0.12		−0.53
AB	−1.04	−0.51	−0.48
AC		−0.25	0.19
AD	0.38	−0.09	0.76
BC	−0.09		−0.07
BD	0.67		−0.55
CD	0.80	−0.09	0.77
A^2		0.40
B^2	−1.10
C^2	−1.02	−0.44
D^2
Error	1.84	0.67	1.47
Model adj-	0.86	0.806	0.801

and denote 1% and 5% levels of significance, respectively.
adj: adjusted.