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(a) Amount of α-carotene and (b) amount of β-carotene available for uptake following in vitro digestions of the carrots that were placed under modified atmospheric pressure and composition conditions for 10 days. Control: P = 1 bar, PO2 = 0.21 bar; normobaria/hypoxia: P = 1 bar, PO2 = 0.03 bar; hypobaria/hypoxia: P = 0.2 bar, PO2 = 0.04 bar; hyperbaria/anoxia: P = 5 bar, PO2 = 0 bar. Values are the means with their standard errors represented by vertical bars (n = 4).
