Table 1 Peak and separation characteristics for catechin and EGCG standards
Antioxidant | Column material | Full width at half maximum (min) | Base width (W) | Retention time (t) | No. of theoretical plates (N) |
|---|---|---|---|---|---|
Catechin | C18 porous silica | 0.470 ± 0.015 | 3.824 | 10.77 ± 0.01 | 2912 ± 170 |
C18 core shell | 0.351 ± 0.057 | 3.688 | 8.73 ± 0.04 | 3431 ± 616 | |
Phenyl-hexyl core shell | 0.358 ± 0.054 | 4.936 | 8.59 ± 0.02 | 3193 ± 675 | |
EGCG | C18 porous silica | 1.127 ± 0.052 | 9.440 | 15.02 ± 0.08 | 985 ± 71 |
C18 core shell | 0.712 ± 0.121 | 6.232 | 12.47 ± 0.03 | 1701 ± 867 | |
Phenyl-hexyl core shell | 0.774 ± 0.089 | 8.168 | 14.19 ± 0.01 | 1864 ± 480 |