Fig. 3
From: ι-Carrageenan nanocomposites for enhanced stability and oral bioavailability of curcumin
In vitro cytotoxicity against Caco-2 cells after (A) Cur, (B) Cur@Tw80, Cur@HPC, and Cur@CRN treatment for 4 h. (C) DPPH bleaching kinetics in the presence of Cur, Cur@Tw80, Cur@HPC, and Cur@CRN (2 μg/mL, Cur equivalent) at 515 nm for 30 min. Images of the colorimetric change from purple to yellow (2 μg/mL ascorbic acid, positive control). (D) Intracellular fluorescence of DCF-DA after incubation with tBHP (positive control), Cur, Cur@Tw80, Cur@HPC, and Cur@CRN (5 μg/mL, Cur equivalent) (n = 3)