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Table 2 Calibration range and prediction errors of the partial least squares models RMSEC: root mean square error of prediction

From: Variation in the chemical composition of wheat straw: the role of tissue ratio and composition

Sugars Minimum
(μg/mg)
Maximum
(μg/mg)
Average
(μg/mg)
SD RMSEC Factors RMSEC as % of average
Total sugars 425.36 628.92 537.29 35.84 21.43 10 4
Rhamnose 0.31 2.1 1 0.41 0.22 5 22
Fucose −0.23 1.42 0.49 0.25 0.26 12 53
Arabinose 6.47 46.06 25.57 8.02 2.19 5 9
Xylose 103.24 224.83 161.4 27.61 9.14 5 6
Mannose 0.87 31.64 9.86 7.24 3.41 5 35
Galactose 2.62 11.53 7.22 2.75 0.94 4 13
Glucose 228.49 359.41 300.5 30.91 17.43 10 6
Uronic acids 19.97 48.61 31.26 6.5 3.9 4 12
Phenolics Minimum
(μg/mg)
Maximum
(μg/mg)
Average
(μg/mg)
SD RMSEC Factors RMSEC as % of average
Klason lignin 107.63 241.21 168.91 21.79 14.4 10 9
Acid insoluble ash 1.47 28.89 14.3 6.27 6.09 10 43
Corrected lignin 101.44 232.16 154.79 21.31 11.63 10 8
Protocatechuic aldehyde 0.002 0.013 0.007 0.002 0.002 10 35
p-OH-Benzoic acid −0.011 0.364 0.105 0.064 0.061 10 58
Vanillic acid 0.079 0.389 0.205 0.061 0.051 10 25
p-OH-Benzaldehyde 0.002 0.301 0.102 0.056 0.032 10 32
Truxillic acid (CA) −0.004 0.021 0.01 0.005 0.005 10 46
Truxillic acid (FA) 0.007 0.032 0.02 0.004 0.005 10 25
Vanillin −0.011 0.423 0.216 0.082 0.069 10 32
t-p-Coumaric acid 1.445 20.043 7.501 3.565 2.098 10 28
8,8'-DiFA (aryl tetralin form) 0 0 0 0 0   
t-Ferulic acid 1.669 7.942 4.462 1.059 1.015 10 23
8,8'-DiFA 0.005 0.149 0.078 0.026 0.019 10 25
8,5'-DiFA −0.035 1.004 0.459 0.23 0.117 10 26
5,5'-DiFA 0.047 0.389 0.202 0.08 0.035 10 17
8-O-4'-DiFA 0.172 1.066 0.655 0.21 0.103 10 16
8,5'-DiFA (benzofuran form) 0.091 0.279 0.164 0.034 0.033 10 20
Total phenolic acids 5.637 32.61 14.356 4.558 3.345 10 23
Total phenolic acids (plus estimated unknown peaks) 5.25 32.659 14.438 4.591 3.344 10 23
Tissues Minimum Maximum Average SD RMSEC Factors RMSEC as % of average
Internode 18.00% 42.70% 30.00% 6.10% 1.70% 6 6
Node 3.00% 7.70% 4.80% 1.00% 0.60% 9 12
Leaf 27.90% 52.80% 40.50% 5.40% 2.20% 6 5
Ear 17.30% 33.70% 24.70% 3.60% 1.90% 6 8