Effects of a Combined Processes of Low-Pressure Steam Enrichment and Low-Pressure Superheated Steam Drying on the γ-Aminobutyric Acid Content of Japonica Rice

Table 4

Response face quadratic regression ANOVA.

Source	Squares	df	Mean square	value	value
Model	1977.3	14	141.24	9.68	<0.0001
A-pressure	116.75	1	116.75	8	0.0134
B-temperature	21.71	1	21.71	1.49	0.2427
C-time	2.45	1	2.45	0.17	0.6883
D-flow rate	5.14	1	5.14	0.35	0.5624
AB	15.44	1	15.44	1.06	0.321
AC	0.86	1	0.86	0.059	0.8112
AD	10.79	1	10.79	0.74	0.4042
BC	0.42	1	0.42	0.029	0.8683
BD	128.94	1	128.94	8.84	0.0101
CD	4.6	1	4.6	0.32	0.5833
A^2	548.65	1	548.65	37.61	<0.0001
B^2	198.95	1	198.95	13.64	0.0024
C^2	1248.87	1	1248.87	85.61	<0.0001
D^2	396.86	1	396.86	27.2	0.0001
Residual	204.24	14	14.59
Lack of fit	138.23	10	13.82	0.84	0.6285
Pure error	66.01	4	16.5
Cor total	2181.54	28