Hydrolysis of Lutein Ester during Its Digestion and Absorption in vivo

Abstract

Abstract: Lutein was proved to have macular degeneration (MD) protection and therapy activities and therefore considered as a functional factor applied in food and pharmaceutical products with a bright future. Lutein was prepared from the flower of marigold. In the flower, lutein exists in ester form. In this study, lutein esters were prepared from marigold flower and then mixed with dietary oil. SD rat was fed with the mixture by gastric administration. After 2 h, blood was collected. Carotenoids were extracted from the blood for HPLC assay. Data from HPLC analysis suggested that only lutein monomer could be observed. This observation proved that lutein esters were hydrolyzed during its digestion and absorption. This conclusion proves a possibility to apply lutein esters in functional food and medicines directly.

Key words: lutein ester, hydrolysis

ZHANG Yan, HUI Bo-Di, ZHANG Ling-Xiao. Hydrolysis of Lutein Ester during Its Digestion and Absorption in vivo[J]. FOOD SCIENCE, 2007, 28(8): 461-465.

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Hydrolysis of Lutein Ester during Its Digestion and Absorption in vivo

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