Table 4.
Component matrix.
| Parameters | Contribution rate |
||
|---|---|---|---|
| PC1 | PC2 | PC3 | |
| TC (X1) | 0.382 | 0.17 | 0.847 |
| TA (X2) | −0.542 | 0.546 | 0.139 |
| TE (X3) | 0.796 | 0.437 | 0.39 |
| TP (X4) | −0.426 | 0.886 | −0.029 |
| ANT (X5) | −0.213 | 0.892 | 0.225 |
| CD (X6) | 0.242 | 0.703 | −0.571 |
| T (X7) | −0.477 | −0.402 | 0.463 |
| ABV (X8) | −0.831 | 0.278 | −0.266 |
| TSS (X9) | 0.912 | 0.356 | −0.058 |
| pH (X10) | −0.619 | 0.615 | 0.309 |
| TDE (X11) | 0.855 | 0.439 | −0.165 |
Note: PC: principal component, TC: total carbohydrates, TA: total acids, TE: total esters, TP: total phenols, ANT: total anthocyanin, CD: color density, T: tint, ABV: alcohol by volume, TSS: total soluble solids, TDE: total dry extracts.