Abstract:
:A simple HPLC method with UV detection is proposed for the simultaneous determination of three lipophilic vitamins: all-trans-retinol, alpha-tocopherol and coenzyme Q(10) (ubiquinone) in human plasma. The following chromatographic conditions were used: RP-18 column, a mobile phase consisted of methanol -n-hexane 72:28 (v/v) and UV detector set at 324, 292 and 276 nm for all-trans-retinol, alpha-tocopherol and coenzyme Q(10), respectively. The linearity range was 0.35-70 microM for all-trans-retinol, 0.23-44 microM for alpha-tocopherol and 0.12-23 microM for coenzyme Q(10). Deproteinised plasma samples were extracted with n-hexane prior to the analysis. The within-day and between day reproducibilities were 1.5 and 3.7% for all-trans-retinol, 4.0 and 5.8% for alpha-tocopherol and 2.3 and 3.1% for coenzyme Q(10), respectively. Using the proposed method the following recoveries were achieved: 91% for all-trans-retinol, 86% for alpha-tocopherol and 88% for coenzyme Q(10). The method was applied to the determination of the levels of retinol, tocopherol and coenzyme Q(10) in plasma of healthy children and children treated by elimination diet.
journal_name
J Pharm Biomed Analjournal_title
Journal of pharmaceutical and biomedical analysisauthors
Karpińska J,Mikołuć B,Motkowski R,Piotrowska-Jastrzebska Jdoi
10.1016/j.jpba.2006.03.037subject
Has Abstractpub_date
2006-09-18 00:00:00pages
232-6issue
2eissn
0731-7085issn
1873-264Xpii
S0731-7085(06)00308-6journal_volume
42pub_type
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