Figure 4.

Differentiated Caco-2 cells were pre-incubated (PI-black) or not (no-PI-grey) with 20 µg.mL⁻¹ LPS for 24h and then, incubated with different final concentrations (0.1, 0.25, and 0.5% dry matter) of the 11 protein samples, before (salivary sample—filled circles) and after SGID (intestinal digestion—empty circles) for 24h. IL-8 levels were determined by ELISA and expressed in pg mL⁻¹. Data are expressed in mean (n = 3) ± SD. Means without a common letter (a–e) are different (p < 0.05) according to two-way ANOVA procedure followed by Tukey’s test. (A–D): PeaP1–PeaP4 (4 grades of pea protein), (E): HPeaP (hydrolyzed pea protein), (F,G): WP1–WP2 (2 grades of wheat protein), (H): PP (potato protein), (I): FBP (fava bean protein), (J): OP (oat protein) and (K): WhP (Whey protein).