Reversed-phase HPLC retention data in correlation studies with in lipophilicity molecular descriptors of carotenoids
2013
Influence of chemical structure on the lipophilicity of isolated free
carotenoids from paprika oleoresin has been studied by QSRR approach
(Quantitative structure-retention relationship). The chromatographic behavior
of these compounds was investigated by using reversed phase high-pressure
liquid chromatography (RP HPLC). Retention mechanism has been determined
using the following mobile phase: acetone -water, on reversed - phase column
(SB-C18). A variety of lipophilicity parameters (logP) were calculated by use
of different software products. On the basis of correlations, the nonlinear
structure-activity models were derived between the retention constants, tr
(retention time of investigation compounds), and logP values. Five high
quality QSRR models were found to have a good predictive ability and close
agreement between experimental and predicted values. The study showed that
the retention constants can be used as a measure of lipophilicity of
investigated compounds at a high significant level. [Projekat Ministarstva
nauke Republike Srbije, br. 172012, br. 172014 i br. 31055]
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