Table 5.
Compounds identified in the 1H NMR spectrum of P. domestica subsp. syriaca fruit pulp extract dissolved in phosphate buffer/D2O and the corresponding chemical shift signals (ppm) used in the integration process. The compound amounts in μg/mg of dry weight are also reported.
| Compound | Chemical Shift (ppm) of Selected Resonances Used for Quantification | μg/mg Dry Weight |
|---|---|---|
| Quinic acid | 1.88 (CH2-1) | 7.50 |
| Citric acid | 2.54 (α,γ-CH) | 0.84 |
| Malic acid | 4.30 (α-CH) | 38.49 |
| Xylose | 5.20 (CH-1) | 0.56 |
| Glucose | 5.25 (CH-1) | 106.59 |
| Sucrose | 5.42 (CH-1) | 31.59 |