Table 1.
Mass spectrometry (MS) characteristics and the content of phenolic compounds in pomegranate peel extract. Ranked by retention time (Rt).
| Rt | MS [M-H]− (m/z) | MS/MS [M-H]− (m/z) | Name of compound | Polyphenol content |
|---|---|---|---|---|
| 1.67 | 331 | 271/169 | Galloyl-glucose | 2.00 ± 0.03 |
| 1.73 | 781 | 721/601 | Punicalin α/A | 3.11 ± 0.06 |
| 2.02 | 1083 | 611/331/146 | HHDP-gallagyl-hexoside (punicalagin) | 4.20 ± 0.09 |
| 2.12 | 1083 | 781/622/301 | Punicalagin isomer | 14.82 ± 1.04 |
| 2.33 | 933 | 631/450/301 | Ellagitannin | 4.71 ± 0.40 |
| 2.87 | 1083 | 781/301 | HHDP-gallagyl-hexoside (punicalagin) | 93.91 ± 2.05 |
| 3.12 | 1085 | 907/783/301 | Ellagic acid derivative | 2.49 ± 0.53 |
| 3.69 | 1083 | 781/301 | HHDP-gallagyl-hexoside (punicalagin) | 157.0 ± 2.65 |
| 3.89 | 799 | 301 | Granatin A | 4.74 ± 0.32 |
| 5.08 | 783 | 481/301 | Ellagitannin | 25.86 ± 1.53 |
| 6.20 | 1085 | 933/301 | Digalloyl-gallagyl-hexoside | 10.37 ± 0.65 |
| 6.25 | 783 | 481/301 | Ellagitannin | 13.51 ± 0.99 |
| 6.38 | 463 | 301 | Ellagic acid-hexoside | 33.63 ± 1.23 |
| 6.89 | 951 | 907/635/301 | Galloyl-HHDP-DHHDP-hex (granatin B) | 2.68 ± 0.11 |
| Total (mg/g dw) | 373.05 |