(268) Lutein Content in Sweetpotato Leaves

in HortScience
View More View Less
  • 1 1Louisiana State University, Department of Horticulture, Baton Rouge, LA, 70803
  • | 2 2Louisiana State University, Department of Foood Science, Baton Rouge, LA, 70803

Fresh leaves of six sweetpotato [Ipomoea batatas (L.) Lam.] genotypes, `Beauregard', `Bienville', L 99-35, L 00-8, L 01-145, and L 01-29 were characterized for lutein. Lutein is a carotenoid capable of delaying blindness-related macular degeneration. The content of lutein in sweetpotato ranged from 0.38 to 0.58 mg·g-1 fresh weight. Beta-carotene separated from lutein on HPLC chromatograms, and, when spiked in pure lutein extract, did not interfere with lutein separation. Stems were also characterized and found not to contain lutein. Our results showed that sweetpotato leaves are an excellent source of dietary lutein and surpass levels found in leafy crucifers. Leaves of sweetpotato and a related species are used as human food in some countries and could be a source of extracted lutein for commercial purposes.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 58 15 1
PDF Downloads 79 36 12