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Table 1 Peak and separation characteristics for catechin and EGCG standards

From: HPLC-CUPRAC post-column derivatization method for the determination of antioxidants: a performance comparison between porous silica and core-shell column packing

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
  1. Computed resolution values: RC18 porous silica = 0.641; RC18 core shell = 0.754; RPhen-hex core shell = 0.855