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Table 6 Partition coefficients and separation factors of lutein and zeaxanthin from variation on a solvent system of n-heptane/ethanol/water

From: Quantification and purification of lutein and zeaxanthin recovered from distillers dried grains with solubles (DDGS)

n-heptane/ethanol/water ratio (v/v) Partition coefficient, KD Separation factor, α Settling time (s)
Lutein Zeaxanthin
6:5:1.3 1.527 1.658 1.086 6
5:3:1 0.891 1.016 1.140 5
4:3:1 0.988 1.150 1.164 5–7
4:3:2 0.151 0.167 1.111 5–7
6:5:1.2 0.606 0.522 1.162 ~ 10
6:5:1.5 0.357 0.374 1.049 6
6:4.5:1.5 0.268 0.277 1.034 7–8