Beta-carotene isomers in human serum, breast milk and buccal mucosa cells after continuous oral doses of all-trans and 9-cis beta-carotene

The Journal of Nutrition | October 1, 1997| | Copyright

Beta -Carotene Isomers in Human Serum, Breast Milk and Buccal Mucosa Cells after Continuous Oral Doses of All-Trans and 9-Cis Beta-Carotene1,2,3

Elizabeth J. Johnson,4 Jian Qin, Norman I. Krinsky* and Robert M. Russell

ABSTRACT The concentrations of all-trans Beta-carotene (tBC) and 9-cis Beta -carotene (9cBC) isomers in serum, breast milk and buccal mucosa cells were determined after continuous oral doses as a simple, non-invasive method to determine whether differences in tissue uptake are important determinants of serum responses. Twelve healthy lactating women were recruited for a ...

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