Table 1.
EGCG fatty acid esters and the ratio of their regioisomers.
| Abbreviation | Acyl group | Position of acyl group on EGCG fatty acid esters (%)a; R1:R2:R3:R4 | Log Pc |
|---|---|---|---|
| EGCG | None | 2.07 | |
| C8 (octanoate) |  |
35:39:6:20 | 4.79 |
| C12 (laurate) |  |
30:39:9:22 | 6.46 |
| C8 × 2 (dioctanoate) |  |
NDb | 7.50 |
| C16 (palmitate) |  |
38:35:7:20 | 8.13 |
| C16E (palmitoleate) |  |
28:37:9:26 | 7.81 |
| C18 (stearate) |  |
38:35:7:20 | 8.97* |
| C18E (oleate) |  |
41:34:5:20 | 8.65* |
| C18DE (linoleate) |  |
28:27:5:45 | 8.33* |
| C18TE (linolenate) |  |
15:19:4:62 | 8.01 |
| C20 (eicosanoate) |  |
28:37:9:26 | 9.80* |
aThe ratio of regioisomers was determined by 1H-NMR spectroscopy. bThe regioisomers could not be determined by 1H-NMR, but the product was identified by mass spectroscopy. cLog P values were calculated using the ChemBioDraw Ultra ver. 11 software. *The values were estimated on the basis of the log P values of fatty acids.