Table 4.
Comparison with previous studies on minerals in protein supplements (mean concentrations, mg/kg).
| Elgammal et al. [5] | Guefai et al. [6] | Lofaso et al. [11] | Pinto et al. [18] | This Study | |
|---|---|---|---|---|---|
| Ca | 4423 | 1064 | - | - | 3811 |
| Mg | 962 | 724 | - | - | 809 |
| K | - | 4978 | - | - | 4689 |
| Na | 2830 | 3575 | - | - | 3382 |
| Ba | - | 0.46 | - | 1.38 | 1.01 |
| B | - | - | - | - | 0.84 |
| Co | N.D.–< 0.5 | 0.35 | 0.01 | 0.04 | 0.07 |
| Cu | N.D.–16.78 | 4.00 | 1.91 | 1.90 | 2.57 |
| Cr | N.D.–0.69 | 1.40 | 0.05 | 0.46 | 0.21 |
| Fe | 17.51 | 22.00 | 11.5 | 13.70 | 25.74 |
| Li | - | 1.19 | - | 0.02 | 3.68 |
| Mn | 3.56 | 8.70 | 0.20 | 1.60 | 3.02 |
| Mo | - | - | - | 0.92 | 0.58 |
| Ni | N.D.–0.93 | 0.52 | - | 0.35 | 0.32 |
| Sr | - | 3.10 | - | 3.20 | 2.84 |
| V | - | 0.44 | 0.002 | 0.025 | 0.04 |
| Zn | 17.66 | 29.10 | - | 6.70 | 14.60 |
| Al | <5–16.26 | 8.00 | - | 3.00 | 7.19 |
N.D.: Not detectable.