Table 2.
The polyphenolic profile of pomegranate leaf infusion at 0 h of storage by RP-HPLC-DAD as well as their respective retention times and decrease or increase percentage (%).
| Peak NO. 1 | Retention Time (min) | Identified Compounds 2 | Decrease/Increase Percentage (%) | p-Value 3 |
|---|---|---|---|---|
| 1 | 10.98 | Gallic acid | 7.59 | *** |
| 2 | 11.12 | Flavan-3-ols | 4.11 | *** |
| 3 | 12.73 | Punicalin A and B | 5.14 | * |
| 4 | 13.38 | Ellagic acid derivatives | 2.48 | *** |
| 5 | 15.25 | Ellagitannin I | 7.37 | *** |
| 6 | 16.31 | Flavanone glycoside I | - | - |
| 7 | 16.54 | Ellagitannin II | 11.99 | *** |
| 8 | 17.24 | Ellagitannin III (galloyl-glucose) | 12.82 | *** |
| 9 | 19.01 | Ellagitannin IV (punicalagin A) | 5.29 | *** |
| 10 | 20.14 | Flavonol glycoside | 52.98 | *** |
| 11 | 20.37 | Ellagitannin V | 50.08 | *** |
| 12 | 21.30 | Ellagitannin VI | 19.36 | *** |
| 13 | 22.56 | Ellagitannin VII (punicalagin B) | 3.93 | *** |
| 14 | 23.33 | Ellagitannin VIII | 4.45 | *** |
| 15 | 24.35 | Ellagic acid | 36.39 | *** |
| 16 | 24.90 | Ellagitannin IX | 8.41 | *** |
| 17 | 25.10 | Flavanone glycoside II | - | - |
| 18 | 26.44 | Apigenin glycoside | 31.98 | *** |
| 19 | 27.13 | Luteolin glycoside I | 35.09 | *** |
| 20 | 28.38 | Luteolin glycoside II | 36.03 | *** |
1 Peak number and retention time showed according to Figure S1. 2 Text in italics represented the compounds in decreasing concentrations. 3 Significant differences of polyphenolic compounds among different storage time were denoted as * at p < 0.05, and *** at p < 0.001, according to Tukey’s multiple range test.