Biological Pretreatment by Solid-State Fermentation of Oat Straw to Enhance Physical Quality of Pellets

Table 3

Coefficient values of the fitting model for different responses of oat straw pellets pretreated with TV52J.

Response variable	Source		Sum of squares	Mean squares	value	value
Density 0	Model	14	8079.23	577.09	7.56	0.0003
		1	1664.51	1664.51	21.81	0.0004
		1	3352.36	3352.36	43.93	<0.0001
		1	365.19	365.19	4.79	0.0462
		1	462.25	462.25	6.06	0.0275
		1	639.33	639.33	8.38	0.0118
		1	1266.17	1266.17	16.59	0.0011
	Lack of fit	10	975.30	97.53	4.19	0.0900
Density 1	Model	14	7815.07	558.22	2.84	0.0304
		1	4384.98	4384.98	22.28	0.0003
		1	1294.49	1294.49	6.58	0.0225
	Lack of fit	10	923.37	92.34	0.50	0.8297
Dimensional stability	Model	14	16.66	1.19	2.80	0.0318
		1	2.91	2.91	6.86	0.0202
		1	2.22	2.22	5.23	0.0383
		1	3.09	3.09	7.28	0.0173
		1	3.90	3.90	9.18	0.0090
	Lack of fit	10	4.41	0.44	1.15	0.4846
Tensile strength	Model	14	0.042	0.003	3.64	0.0107
		1	0.004	0.004	4.79	0.0460
		1	0.027	0.027	32.81	<0.0001
		1	0.004	0.004	5.30	0.0371
	Lack of fit	10	0.009	0.0009	1.27	0.4421