Summary
Polarities of the carotenoids in human serum are very different; many nonpolar carotenoid hydrocarbons (e.g. β-carotene, lycopene) and highly polar hydroxycarotenoids (e. g. β-cryptoxanthin, zeaxanthin, lutein) can be found among them.
Gradient elution chromatography was used for the separation of β-carotene, lycopene, β-cryptoxanthin, lutein and zeaxanthin in serum samples applying amino and cyano packings (Chromsil-NH2, Chromsil-CN). The effects of different stationary phases on the selectivity were compared. The method is particularly suitable for the direct determination of serum levels of carotenoid in serum extracts.
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Ohmacht, R., Tóth, G. & Voigt, G. HPLC determination of carotenoids in human serum by gradient elution technique. Chromatographia 22, 189–190 (1986). https://doi.org/10.1007/BF02257325
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DOI: https://doi.org/10.1007/BF02257325