Table 1.
Lineal correlation coefficients (R2) between copper concentrations and phenolic compounds of wine.
| Phenolic Compounds | Copper Concentrations | Phenolic Compounds | Copper Concentrations | ||||
|---|---|---|---|---|---|---|---|
| Hydroxybenzoic Acids | Low | Medium | High | Flavonols | Low | Medium | High |
| gall | + | −0.5468 | −0.9155 | CAT | + | −0.8743 | −0.7586 |
| prot | + | −0.3135 | −0.9757 | EGC | + | +0.0977 | −0.9960 |
| p-hyd | + | +0.0747 | −0.8834 | EGCG | + | +0.6165 | −0.9540 |
| gent | + | −0.0081 | −0.9757 | EC | + | −0.0032 | −0.8421 |
| vani | + | −0.1141 | −0.9378 | ECG | + | +0.9001 | −0.9918 |
| syri | + | −0.0014 | −0.9844 | TMFA | + | −0.6257 | −0.9579 |
| THBA | + | −0.4473 | −0.9565 | ||||
| Hydroxycinnamic Acid | |||||||
| caff | + | +0.1286 | −0.9748 | TP | + | −0.7783 | −0.9995 |
| p-cou | + | +0.0071 | −0.9933 | TFA | + | −0.6335 | −0.8103 |
| feru | + | +0.0005 | −0.9764 | TFO | + | −0.8351 | −0.9333 |
| sina | − | −0.4541 | −0.9124 | TA | + | +0.6744 | −0.8596 |
| chlo | + | +0.7274 | −0.9227 | ||||
| THCA | + | +0.0265 | −0.9712 | ||||
| TPA | + | −0.3775 | −0.9774 | ||||
Note: Values expressed as Pearson correlation coefficient (r).