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B.

Linearity

Figure 4. Standard curves for each carotenoid analyte and the internal standard.

y = 15.19x - 5.78

R² = 1.00

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Peak area

Lutein (mcg/100 mL)

Lutein

y = 16.79x - 2.34

R² = 1.00

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Beta-carotene (mcg/100 mL)

Beta-Carotene

y = 14.92x - 6.43

R² = 1.00

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Apocarotenal (mcg/100 mL)

Apocarotenal

Carot-02 (February 2016)

FOR ERP USE ONLY

DO NOT DISTRIBUTE