Table 1.
Polyphenols present in encapsulated WP as identified by HPLC-QTOF.
| Polyphenol | Rt (min) | M+ | M− | Fragment | Abs Max (nm) | (mg/100 g WP) |
|---|---|---|---|---|---|---|
| Anthocyanins | 249.92 | |||||
| Delphinidin-3-O-glucoside | 7.8 | 465.10 | 303.04 | 520 | 5.90 | |
| Cyanidin-3-O-glucoside | 9.9 | 449.10 | 287.05 | 520 | 0.73 | |
| Petunidin-3-O-glucoside | 10.5 | 479.11 | 317.06 | 520 | 15.60 | |
| Peonidin-3-O-glucoside | 12.7 | 463.12 | 301.06 | 520 | 6.06 | |
| Malvidin-3-O-glucoside | 13.0 | 493.10 | 331.08 | 520 | 112.45 | |
| Delphindin-3-O-(6″-ac-glu) | 15.0 | 507.08 | 303.02 | 520 | 4.33 | |
| Cyanidin- 3-O-(6″-ac-glu) | 17.6 | 491.08 | 287.03 | 520 | 0.64 | |
| Petunidin- 3-O-(6″-ac-glu) | 18.1 | 521.09 | 317.04 | 520 | 7.74 | |
| Peonidin- 3-O-(6″-ac-glu) | 20.4 | 505.10 | 301.04 | 520 | 3.65 | |
| Malvidin 3-O-(6″-ac-glu) | 20.5 | 535.11 | 331.06 | 520 | 72.87 | |
| Delphinidin 3-O-(6″-cou-glu) | 22.0 | 611.13 | 303.04 | 520 | 0.24 | |
| Cyanidin 3-O-(6″-cou-glu) | 24.0 | 595.14 | 287.05 | 520 | 0.15 | |
| Petunidin 3-O-(6″-cou-glu) | 24.2 | 625.15 | 317.06 | 520 | 1.24 | |
| Peonidin 3-O-(6″-cou-glu) | 26.6 | 609.13 | 301.05 | 520 | 1.48 | |
| Malvidin 3-O-(6″-cou-glu) | 26.6 | 639.14 | 331.06 | 520 | 16.84 | |
| Flavonols | 8.34 | |||||
| Quercetin-3-O-glucoside | 23.1 | 465.10 | 303.04 | 360 | 0.27 | |
| Quercetin-3-O-glucuronide | 24.1 | 479.08 | 303.04 | 360 | 4.19 | |
| Syringenin-3-O-glucoside | 27.0 | 509.10 | 347.05 | 360 | 3.70 | |
| Syringenin- 3-O-(6″-ac-glu) | 32.3 | 551.10 | 347.05 | 360 | 0.18 | |
| Flavanols | 24.73 | |||||
| Gallocatechin | 7.4 | 307.07 | 139.03 | 280 | 0.95 | |
| Epigallocatechin | 10.3 | 307.07 | 139.03 | 280 | 0.18 | |
| Catechin | 12.6 | 291.07 | 139.03; 123.03 | 280 | 5.06 | |
| Epicatechin | 15.9 | 291.06 | 139.03; 123.03 | 280 | 5.75 | |
| Procyanidin B1 | 9.8 | 579.14 | 127.03; 409.08 | 280 | 5.18 | |
| Procyanidin B3 | 11.5 | 579.14 | 127.03; 287.04 | 280 | 1.56 | |
| Procyanidin B4 | 13.8 | 579.14 | 127.03 | 280 | 0.70 | |
| Procyanidin B2 | 14.1 | 579.14 | 127.03; 409.08 | 280 | 3.76 | |
| Procyanidin B7 | 18.4 | 579.11 | 127.03; 287.04 | 280 | 0.43 | |
| Procyanidin trimer EEC | 12.3 | 867.21 | 289.07; 579.13 | 280 | 0.66 | |
| Procyanidin trimer EEE | 17.1 | 867.16 | 291.05; 579.10 | 280 | 0.50 | |
| Phenolic acids | 29.10 | |||||
| Gallic acid | 5.3 | 169.01 | 125.01 | 280 | 16.75 | |
| Caffeic acid | 15.6 | 179.03 | 135.04 | 280 | 1.97 | |
| Syringic acid | 21.3 | 197.04 | 124.02; 169.02 | 280 | 10.37 | |
| Stilbenoids | 0.15 | |||||
| Resveratrol | 39.3 | 227.11 | 138.95; 185.05 | 280 | 0.07 | |
| Piceid (Res 3-O-glu) | 28.5 | 389.22 | 227.06 | 280 | 0.08 | |
| Total Polyphenols by HPLC | 312.23 |
Abbreviations: ac (acetyl), glu (glucose), B1 (epicatechin-(4β→8)-catechin), B3 (catechin-(4β→8)-catechin), B4 (catechin-(4β→8)-epicatechin), B2 (epicatechin-(4β→8)-epicatechin), B7 (epicatechin-(4β→6)-catechin), EEC (epicatechin-(4β→8)epicatechin-(4β→8)-catechin), EEE (epicatechin-(4β→8)epicatechin-(4β→8)-epicatechin), Res (Resveratrol).