Table 2.
The contents of quercetin and kaempferol (free and released from ester and O-glycoside forms) in legume sprouts (μg/g DW) treated with elicitors during growth.
| Treatment | Free | Esters | Glycosides | Total |
|---|---|---|---|---|
| Quercetin | ||||
| Fenugreek | ||||
| Control | 1.4 ± 0.9 a | 3.4 ± 1.2 a | 101 ± 5.1 a | 106 ± 7.2 a |
| Fe-EDTA–Na-Sil | 2.0 ± 1.0 a | 4.7 ± 1.0 a | 41.1 ± 5.2 b | 47.8 ± 7.2 b |
| Na-Sil | 2.0 ± 0.9 a | 3.7 ± 1.1 a | 63.5 ± 4.3 b | 69.2 ± 6.3 b |
| Lentil | ||||
| Control | 3.0 ± 0.9 a | nd | 345 ± 5.9 a | 348 ± 6.8 a |
| Fe-EDTA–Na-Sil | 3.3 ± 1.3 a | nd | 153 ± 3.7 b | 156 ± 5.0 b |
| Na-Sil | 3.9 ± 1.2 a | nd | 8.4 ± 1.9 c | 12.3 ± 3.1 c |
| Alfalfa | ||||
| Control | 31.8 ± 1.3 a | 58.3 ± 3.5 a | 165 ± 3.9 b | 255 ± 8.7 b |
| Fe-EDTA–Na-Sil | 35.3 ± 2.1 a | 37.4 ± 2.7 b | 177 ±2.6 b | 250 ± 6.4 b |
| Na-Sil | 23.0 ± 1.0 b | 42.8 ± 2.5 b | 344 ± 6.7 a | 410 ± 10.2 a |
| Kaempferol | ||||
| Fenugreek | ||||
| Control | nd | nd | 32.5 ± 2.2 a | 32.5 ± 2.2 a |
| Fe-EDTA–Na-Sil | nd | nd | 30.9 ± 1.2 a | 30.9 ± 1.2 a |
| Na-Sil | nd | nd | 31.3 ± 2.4 a | 31.3 ± 2.4 a |
| Lentil | ||||
| Control | nd | 3.3 ± 0.9 a | 122 ± 3.9 b | 125 ± 4.8 b |
| Fe-EDTA–Na-Sil | nd | 3.5 ± 1.1 a | 157 ± 4.9 a | 160 ± 6.0 a |
| Na-Sil | nd | 4.7 ± 1.0 a | 98.7 ± 2.8 c | 102 ± 3.8 b |
| Alfalfa | ||||
| Control | 3.6 ± 0.9 a | 1.0 ± 0.9 a | 29.1 ± 1.9 c | 33.7 ± 3.7 b |
| Fe-EDTA–Na-Sil | 5.4 ± 1.2 a | 1.2 ± 0.9 a | 45.2 ± 3.5 b | 51.8 ± 5.6 ab |
| Na-Sil | 1.5 ± 0.9 a | 1.7 ± 0.9 a | 71.2 ± 4.4 a | 74.4 ± 6.2 a |
Abbreviations: Fe-EDTA–Na-Sil—sodium metasilicate and Fe-EDTA chelate; Na-Sil—sodium metasilicate; nd—not detected; DW—dry weight. Mean results followed by the same letter within the same column, and calculated for each phenolic acid and species separately, were not significantly different (p < 0.05) according to Tukey’s test.