Table 4.
Antioxidant and antinutrient compounds in quinoa leaves and grains (dry weight of the sample).
| Antioxidant Compounds | Leaves | Grain |
|---|---|---|
| Ascorbic acid (mg/100 g) | 358.00 ± 0.17 | ND |
| Total carotenoids (µg RE/g) | 1695.12 ± 5.22 | 13.89 ± 1.01 ** |
| Total phenols (mg AGE/100 g) | 4902.53 ± 6.4 | 1110.39 ± 1.63 ** |
| Flavonoids (mg quercetin/100 g) | 616.00 ± 0.268 | 9.48 ± 1.12 ** |
| Anthocyanins (mg/100 g) | 49.36 ± 0.56 | 0.77 ± 0.21 ** |
| Antioxidant capacity (µMoles Trolox equivalent/g) | 44.16 ± 0.72 | 31.99 ± 1.79 |
| Antinutrient compounds | ||
| Saponins (mg/100 g) | 0.49 ± 0.01 | 199.07 ± 1.01 ** |
| Nitrates (mg/100 g) | 60.07± 1.14 | 21.83 ± 1.61 ** |
| Oxalates (mg/100 g) | 12.85 ± 0.25 | 4.31 ± 0.47 ** |
Mean ± standard deviation (n = 3). RE: retinol equivalents. AGE: gallic acid equivalent. ND: not detectable. ** highly significant.