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

Table 2

Physical properties of oat straw pellets based on the Box–Behnken experimental design.

Runs	Variables				Responses
					Fungi: TV52J				Fungi: PC
	(d)	(%)	(mm)	(°C)	(kg/m^3)	(kg/m^3)	(%)	(MPa)	(kg/m^3)	(kg/m^3)	(%)	(MPa)
1	1	0	−1	0	1,044	1,009	1.68	0.265	1,041	1,016	1.32	0.229
2	0	1	1	0	1,051	1,026	1.70	0.275	1,052	1,010	2.08	0.238
3	−1	1	0	0	1,009	991	1.83	0.248	984	975	1.33	0.179
4	0	−1	−1	0	1,047	1,022	2.06	0.256	1,025	999	0.89	0.214
5	1	0	0	−1	1,063	1,029	1.17	0.295	1,075	1,057	0.58	0.271
6	0	0	0	0	1,029	991	2.80	0.239	1,045	1,036	1.58	0.260
7	0	0	0	0	1,039	1,032	2.69	0.210	1,037	1,022	4.63	0.233
8	−1	0	1	0	1,002	986	2.96	0.185	1,005	985	0.87	0.190
9	0	1	0	−1	1,071	1,045	1.29	0.325	1,060	1,025	3.02	0.245
10	1	0	0	1	1,040	1,008	1.52	0.244	1,031	1,019	3.67	0.232
11	−1	0	0	−1	1,052	1,030	2.05	0.259	1,020	1,001	1.72	0.198
12	0	−1	1	0	1,032	1,030	1.58	0.184	1,044	1,021	3.37	0.237
13	0	0	1	−1	1,076	1,063	1.44	0.362	1,053	1,022	2.66	0.268
14	−1	0	0	1	1,028	1,005	4.26	0.198	996	962	0.92	0.192
15	0	0	−1	−1	1,049	1,023	0.88	0.262	1,071	1,034	2.40	0.279
16	0	−1	0	1	1,025	997	2.77	0.217	1,033	993	4.12	0.186
17	−1	−1	0	0	1,012	991	3.58	0.221	991	960	1.15	0.147
18	0	0	1	1	1,011	1,000	3.97	0.197	1,047	1,007	4.68	0.217
19	0	−1	0	−1	1,066	1,041	2.43	0.277	1,046	1,016	3.19	0.240
20	−1	0	−1	0	1,031	999	1.47	0.229	989	972	1.83	0.187
21	0	0	−1	1	1,035	1,000	1.61	0.169	1,029	985	2.51	0.215
22	0	1	0	1	1,036	993	1.97	0.182	1,047	998	2.98	0.235
23	1	0	1	0	1,054	1,016	3.06	0.284	1,040	1,019	3.03	0.237
24	1	−1	0	0	1,037	995	1.63	0.243	1,022	1,007	2.06	0.183
25	0	1	−1	0	1,024	1,016	0.92	0.214	1,051	1,034	2.28	0.245
26	1	1	0	0	1,036	1,003	1.18	0.228	1,065	1,034	1.80	0.257
27	0	0	0	0	1,027	995	3.22	0.227	1,031	1,002	2.62	0.207
28	0	0	0	0	1,034	991	1.56	0.252	1,040	1,020	1.85	0.226
29	0	0	0	0	1,035	1,010	2.40	0.280	1,032	1,004	1.43	0.206