8 Αποτελέσματα
The method for separation and quantitative determination of the main carotenoids in food by high-performance liquid chromatography (HPLC) was in-house validated. Tomato (Lycopersicon esculentum M.) as food matrix was used to demonstrate its linearity, repeatability, intermediate precision, detection
The investigation of beta-carotene and the xanthophylls beta-cryptoxanthin, lutein, zeaxanthin, canthaxanthin and astaxanthin using reversed-phase liquid chromatography-electrospray mass spectrometry interfaced with TurboIonspray (LC-TurboISP-MS) is described. Two narrow-bore C18 columns connected
A reversed-phase high-performance liquid chromatography (HPLC) procedure for the quantitative measurement in serum of seven carotenoids (lutein, zeaxanthin, canthaxanthin, beta-cryptoxanthin, lycopenes, alpha-carotene and beta-carotene), retinol, alpha-tocopherol and two internal standards (tocol
A single-laboratory validation study was conducted for a liquid chromatographic (LC) method for the determination of total and all-trans-lycopene in a variety of dietary supplements and raw materials. Gelatin-based and other water-dispersible beadlets, or tablets, capsules, and softgels containing
A single laboratory validation (SLV) study was conducted for a liquid chromatography (LC) method for the determination of total and all-trans-beta-carotene in a variety of dietary supplements, including multivitamin tablets, softgels, capsules, and beadlet raw materials. Extraction variants were
A simple and reliable high-performance liquid chromatography method was developed and validated for the simultaneous determination of lipophilic antioxidants in tomato fruits using C30 column operated at 15°C and a gradient mobile phase based on acetonitrile/methanol/dichloromethane in a total run
The water insoluble residues of some carotenoid-rich fruits and vegetables, such as apricots, oranges, brussels sprouts, carrots, yellow-red peppers, and tomatoes, were sequentially extracted with n-hexane, dichloromethane, acetone, and 2-propanol, and solvent extracted materials were tested for
An improved high performance liquid chromatography-diode array detection-mass spectrometry method was developed for determination of various carotenoids and their precursors phytoene and phytofluene in human serum. A polymeric C30 column and mobile phase of (A) methanol/acetonitrile/water (84:14:4,