International Journal of Analytical Chemistry / 2015 / Article / Tab 3

Research Article

Fast Differential Analysis of Propolis Using Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry

Table 3

The loadings and the scores for the first three rotated principal components.

LoadingsScores
[M–H]PC1PC2PC3Sample numberPC1PC2PC3

Aa2130.3690.2040.8811−0.815−0.509−0.424
2170.2880.313−0.18622.6010.080−1.040
2190.7850.2840.5053−0.517−0.7960.465
2290.276−0.0820.94440.322−0.5530.069
2450.6040.2140.6685−0.366−0.4160.076
2490.9480.1660.20860.979−0.2823.289
2610.7740.3940.38571.163−0.4540.784
2630.9140.1540.2558−0.809−0.796−0.608
2650.8920.2590.3129−0.014−0.8230.381
2790.9120.2070.269100.011−0.5421.410
2950.8610.2890.3511−1.2800.620−0.498
3110.8380.3310.37912−0.484−0.508−0.076
3130.9410.2070.11513−0.8060.929−0.510
3140.9440.2540.072140.684−0.2221.563
3290.7030.1640.25915−0.407−0.676−0.343

Bb2530.4340.6780.321160.8640.1010.168
2550.0500.760−0.09617−0.7850.286−0.419
2690.3900.6520.175181.384−0.364−0.742
2710.0890.7420.28419−1.4380.040−0.618
2830.6150.5080.15420−0.799−0.866−0.424
2470.8900.1290.320210.371−0.746−0.318
3030.5740.7180.31722−0.6470.805−0.018
2670.7720.4460.29523−0.6750.732−0.481
2850.4490.4820.414241.967−0.363−1.688

Bold fonts indicate high correlation; athe most abundant ions for SDAPCI-MS fingerprints of samples in this study; bsome abundant ions of fingerprints of propolis samples by other MS methods (Pietta et al., [1] 2002; Sawaya et al., 2004 [27]).

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