Table 5.
Effects of ambient CO2 concentration (400 μmol mol−1) and elevated CO2 concentration (800 μmol mol−1) treatments on isoflavone and tocopherol contents in soybean seeds. The asterisk indicates a significant difference between ambient and elevated CO2 treatments (P < 0.05). Data are mean ± S.D. (n = 5 or 7); the experiments were repeated three times.
| Compound | Ambient CO2 | Elevated CO2 | Relative change (%) | |
|---|---|---|---|---|
| Isoflavone (μg/g) | Daidzin | 191.22 ± 5.91 | 181.01 ± 4.90* | −5.34% |
| Glycitin | 27.49 ± 3.21 | 23.20 ± 3.42* | −15.61% | |
| Genistin | 188.71 ± 11.93 | 185.41 ± 9.85 | −1.75% | |
| Tocopherol (μg/g) | α-tocopherol | 28.55 ± 3.05 | 30.12 ± 2.64 | 5.50% |
| γ-tocopherol | 216.41 ± 18.82 | 214.30 ± 17.18 | −0.98% | |
| δ-tocopherol | 170.76 ± 14.92 | 143.52 ± 12.01* | −15.95% | |