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Table 2 The measured concentration of lutein and zeaxanthin in both DDGS and oleoresin

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

Time (h) Oleoresin (g) µg/g wet DDGS µg/g oleoresin % extracted
Lutein Zeaxanthin Lutein Zeaxanthin Lutein Zeaxanthin
4 1.96 15.145 11.793 61.945 48.218 100.00 96.410
8 0.8 None 0.439 None 0.005 None 3.590
12 0.2 None None None None None None
  1. The crude extraction solution was replaced with fresh ethanol every 4 h. The result indicates that four hours is a sufficient time-frame to recover lutein and zeaxanthin from DDGS