Table 4.
PCA1 results based on Pearson correlation matrix between selected Achillea millefolium phenolic compounds in plant organs that differed significantly between countries and the two principal component scores.
| No. | Variables | Inflorescences | Leaves | Stems | |||
|---|---|---|---|---|---|---|---|
| PC1 | PC2 | PC1 | PC2 | PC1 | PC2 | ||
| 1 | Neochlorogenic acid | −0.93 | −0.12 | −0.79 | 0.45 | - | - |
| 2 | Chlorogenic acid | −0.96 | −0.12 | −0.92 | 0.21 | −0.93 | −0.08 |
| 3 | 4-O-caffeoylquinic acid | - | - | 0.60 | 0.35 | - | - |
| 4 | 3,4-O-dicaffeoylquinic acid | −0.64 | −0.39 | −0.89 | 0.02 | −0.89 | −0.10 |
| 5 | 3,5-O-dicaffeoylquinic acid | −0.95 | −0.13 | −0.92 | 0.10 | −0.88 | −0.09 |
| 6 | 1,5-O-dicaffeoylquinic acid | −0.91 | 0.03 | −0.85 | −0.10 | −0.86 | −0.24 |
| 7 | 4,5-O-dicaffeoylquinic acid | −0.91 | −0.02 | −0.89 | −0.04 | −0.72 | 0.46 |
| 8 | Caffeic acid | −0.67 | 0.16 | −0.48 | 0.65 | −0.59 | 0.45 |
| 9 | Quercitrin | −0.55 | −0.10 | −0.86 | −0.05 | −0.78 | −0.28 |
| 11 | Quercetin | - | - | 0.55 | −0.34 | 0.52 | −0.40 |
| 12 | Isoquercitrin | 0.58 | −0.26 | - | - | −0.62 | −0.36 |
| 13 | Luteolin | 0.43 | 0.21 | - | - | - | - |
| 14 | Luteolin-7-O-glucoside | −0.59 | −0.59 | −0.75 | −0.44 | - | - |
| 15 | Luteolin-7-O-rutinoside | - | - | −0.87 | −0.07 | - | - |
| 16 | Luteolin-3,7 O-diglucoside | 0.65 | −0.53 | - | - | - | - |
| 17 | Apigenin | −0.78 | 0.30 | - | - | - | - |
| 18 | Apigenin-7-O-glucoside | −0.95 | 0.00 | −0.79 | −0.49 | −0.80 | −0.20 |
| 19 | Santin | 0.64 | −0.36 | - | - | 0.33 | −0.77 |