TABLE 3.
Potential marker compounds of Shuixian tea in different storage years.
| Compound name | Pearson's correlation coefficient | Significance |
|---|---|---|
| Alpha‐terpineol formate | 0.926 | 7.55E‐07 |
| 2‐Phenethyl‐D‐glucopyranoside | 0.834 | 1.11E‐04 |
| Salvinorin | 0.831 | 1.24E‐04 |
| Tannins | 0.821 | 1.76E‐04 |
| D‐Ribonucleotide | 0.820 | 1.83E‐04 |
| 2,7,4‐Trihydroxyisoflavanone | −0.804 | 3.04E‐04 |
| (S)‐Abscisic acid | −0.810 | 2.49E‐04 |
| Pinosyl alcohol | −0.824 | 1.58E‐04 |
| (−)‐Epicatechin | −0.834 | 1.13E‐04 |
| Ethyl linoleate | −0.839 | 9.33E‐05 |
| 3,3‐Digalloylproanthocyanidin B2 | −0.840 | 8.79E‐05 |
| Leucocyanidin | −0.842 | 8.16E‐05 |
| 3,7‐Di‐O‐methylquercetin | −0.852 | 5.60E‐05 |
| Epigallocatechin | −0.862 | 3.61E‐05 |
| Theophyllin A(D) | −0.862 | 3.60E‐05 |
| 4‐Coumaroyl mangiferyl acetate | −0.873 | 2.12E‐05 |
| Turpentine | −0.884 | 1.24E‐05 |
| (+)‐Gallocatechin | −0.891 | 8.20E‐06 |
| cis‐3‐Hexenyl acetate | −0.892 | 7.84E‐06 |
| (+)‐Catechin | −0.894 | 7.06E‐06 |
| Gallocatechin‐(4α‐ > 8)‐epigallocatechin | −0.898 | 5.59E‐06 |
| Proanthocyanidin B2 | −0.898 | 5.43E‐06 |
| Delphinidin B | −0.907 | 3.04E‐06 |
| Theaflavin‐3‐gallic acid | −0.911 | 2.37E‐06 |
| Niacinamide | −0.913 | 2.01E‐06 |
| 2‐Phenylethanol | −0.914 | 1.84E‐06 |
| Proanthocyanidins C1 | −0.934 | 3.56E‐07 |
| ent‐epigallocatechin‐(4alpha‐ > 8)‐ent‐epigallocatechin‐3‐gallate | −0.937 | 2.65E‐07 |
| Theaflavin 3,3′‐bis‐gallate | −0.937 | 2.64E‐07 |
Note: Correlation analysis was conducted using the Pearson correlation coefficient. A higher absolute value of the coefficient indicates a stronger correlation, with positive values representing positive correlation and negative values indicating negative correlation. Significance is typically considered when the p‐value is below .05, indicating a statistically significant correlation.