Figure 7.

(a) Bioaccessibility of α-carotene and (b) bioaccessibility of β-carotene following in vitro digestions of the sweet potatoes that had been placed under modified atmospheric pressure and composition conditions for 10 days. Control: P = 1 bar, Po₂ = 0.21 bar; normobaria/hypoxia: P = 1 bar, P_O2 = 0.04 bar; hypobaria/hypoxia: P = 0.4 bar, P_O2 = 0.02 bar; hyperbaria/anoxia: P = 5 bar, P_O2 = 0 bar, hyperbaria/hyperoxia: P = 5 bar, P_O2 = 1.05 bar. Values are the means with their standard errors represented by vertical bars (n = 4). The mean values with unlike superscript letters were significantly different for a given variable (p < 0.05; ANOVA followed by the Tukey–Kramer post hoc test).