Table 1.
Retention time of studied samples; the content of dyes in the vitamin samples.
| Sample | Retention Time (min) | Concentration of Colorant (μg·mL−1) | Content of Colorant (μg/Capsule) |
|---|---|---|---|
| Vitamin E (Generica) | 1.830 | 49.50 (E120) | 495 ± 0.02 |
| Vitamin E (Noventis) | 1.870 | 31.48 (E120) | 314.8 ± 0.02 |
| Vitamin E (Zentiva) | 2.420 | 7.95 (E124) | 79.5 ± 0.01 |
| Vitamin AD (Slovakofarma) | 2.463 | 52.40 (E102) | 524.0 ± 0.01 |
| Celaskon long effect (Zentiva) body | 4.337 | 4.00 (E110) | 40.0 ± 0.01 |
| Celaskon long effect (Zentiva) cap | 4.340 | 11.90 (E110) | 119.0 ± 0.01 |