International Journal of Analytical Chemistry / 2015 / Article / Tab 2

Research Article

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

Table 2

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

The loadingsThe scores
[M–H]PC1PC2PC3Sample numberPC1PC2PC3

Aa78−0.157−0.441−0.1591−1.145−0.105−0.262
920.139−0.311−0.18621.555−1.2861.080
93−0.2710.5560.1903−0.747−0.809−0.360
94−0.341−0.205−0.3574−0.065−0.468−0.058
102−0.1990.5580.1905−0.519−0.625−0.010
121−0.6290.1340.09661.369−0.370−3.764
1240.565−0.4160.12871.019−0.5010.279
151−0.0490.287−0.5528−1.192−0.5330.052
154−0.3380.4340.1039−0.002−0.241−0.825
183−0.1840.545−0.294100.070−0.344−0.071

Bb2530.6850.6100.09111−0.9850.717−0.212
2550.2270.629−0.20712−0.856−0.5880.125
2690.5930.541−0.06113−0.2021.3380.629
2710.3720.6700.084141.358−0.087−0.691
2830.7520.268−0.13215−0.418−0.3470.349
3130.9470.003−0.182160.4000.329−0.500
2470.929−0.0380.02317−0.5880.985−0.235
3030.8160.4820.079180.9580.4460.682
1630.0350.5660.05019−1.0201.451−0.252
1770.2590.8070.06420−1.202−0.801−0.001
2290.511−0.1650.73121−0.433−0.2350.825
2670.9130.221−0.05022−0.5791.6950.960
2850.6600.3140.17523−0.1092.3840.561
240.437−1.2051.700

Bold font indicates high correlation. aThe most abundant ions for SDAPCI-MS fingerprints of samples in this paper; bSome abundant ions for fingerprints of propolis samples by other MS methods (Pietta et al., 2002 [1]; Sawaya et al., 2004 [27]). PC: principal component.

We are committed to sharing findings related to COVID-19 as quickly as possible. We will be providing unlimited waivers of publication charges for accepted research articles as well as case reports and case series related to COVID-19. Review articles are excluded from this waiver policy. Sign up here as a reviewer to help fast-track new submissions.