Effect of Stereochemical Configuration on the Transport and Metabolism of Catechins from Green Tea across Caco-2 Monolayers

Zeyi Ai; Shuyuan Liu; Fengfeng Qu; Haojie Zhang; Yuqiong Chen; Dejiang Ni

doi:10.3390/molecules24061185

Figure 7

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LC chromatograms of the samples taken from apical sides after loading GCG (line in red) and EGCG (line in blue) in the basolateral side, obtained by negative ESI/MS interface extracted with (A) 537 [M − H]⁻, (B) 471 [M − H]⁻, and (C) 551 [M − H]⁻. The relative content of the catechin metabolites were measured as free-form equivalents, relative to the internal standard. Each value was the average of three different samples; Mean values with the same lowercase letters indicate no significant difference at a 0.05 level.