Table 4 Effect of tannin polymerization, galloylation, and hydroxylation on PRP affinity and precipitation
From: Salivary proline-rich protein may reduce tannin-iron chelation: a systematic narrative review
Reference | Method | Tannin type | Polymerization (1) | Galloylation (2) | Hydroxylation of the B ring (3) |
|---|---|---|---|---|---|
[50] | ESI-MS | EgCG, ECG, B2, B2 3-O gallate | ↑↑↑ | ↑↑ | ↑ |
[48] | NMR | B2, PGG, TGG, PA monomer | ↑↑↑ | ↑↑ | nd |
[69] | nephelometry | B1–9, C1, B2 3-O gallate, E | ↑↑↑ | ↑↑ | nd |
[49] | NMR | PAC as B1, B3, C2 | ↑↑↑ | ↑↑ | ↑ |
[67] | ESI-MS | B1, B2, B3, B4, C2, C, E, quercetin derivatives | ↑↑↑ | nd | ↑↑ |
[56] | ESI-MS | EgCG, ECG, B2, B2 3-O gallate, reserpine | ↑↑↑ | nd | nd |
[58] | ITC | GSE as catechin, epicatechin, epicatechin 3-O gallate | ↑↑↑ | nd | nd |
[66] | Competitive binding assay | 5GG, gallic acid, EGC | nd | ↑↑↑ | nd |