Origin of the MRI Contrast in Natural and Hydrogel Formulation of Pineapple Juice

Figure 5

(a) Experimental ¹H R1 profiles of pineapple juice with alginate (red squares: 15%, and blue triangles: 5% w/w) at 25°C (solid symbols) and 37°C (empty symbols), and of alginate solutions (pink symbols: 15%, and green symbols: 5% w/w; ∗ and ×: 25 °C, + and ‐: 37 °C). (b). Experimental 1H R1 profiles of the Mn²⁺ solutions with alginate (red squares: 15%, and blue triangles: 5% w/w) at 25°C (solid symbols) and 37°C (empty symbols).

(a)

(b)