Table 6.

Varimax rotated factor loadings of significant PCs.

Variable	PC1	PC2	PC3	PC4
Eigenvalue	7.96	3.77	2.94	2.47
Variability (%)	39.80	18.84	14.72	12.33
Cumulative (%)	39.80	58.65	73.36	85.69
Factor loadings after varimax rotation
Ash	0.925	0.082	0.066	0.161
Extractable	−0.001	−0.595	−0.570	0.010
Lignin	−0.033	0.226	0.918	0.123
Cellulose	0.508	0.216	−0.083	−0.427
Hemicelluloses	−0.042	0.204	0.031	0.898
C	0.141	−0.806	−0.160	0.061
Protein	0.204	0.833	−0.206	0.463
CV	0.450	−0.052	0.224	0.345
Bioethanol	−0.233	−0.614	−0.199	−0.451
Fe	0.590	0.762	0.204	0.003
Cu	0.665	0.426	−0.259	0.486
Zn	0.174	0.785	0.344	−0.121
Na	0.516	0.244	0.797	0.057
Mg	0.731	−0.013	0.607	−0.021
K	0.429	0.130	0.168	0.830
Ca	0.653	0.209	0.532	0.295
Mn	−0.951	0.080	−0.036	−0.037
Al	0.775	0.455	−0.133	0.288
Sr	−0.079	0.003	0.970	0.023
Ba	0.132	−0.250	0.055	0.790