The performance of electrospray ionization and atmospheric pressure chemical ionisation (APCI) for the analysis of carotenoids was investigated. On our instrument, APCI produced spectra which were readily interpreted, and the positive-ion mode proved applicable to all of the compounds. The separatio
High-pressured liquid chromatography of carotenoids
✍ Scribed by Anne Fiksdahl; Julius T. Mortensen; Synnøve Liaaen-Jensen
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 443 KB
- Volume
- 157
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
✦ Synopsis
The potential of high-pressure liquid chromatography @PLC) for separation of carotenoids on silica has been studied with selected model carotenoids (carotenes, diols, cis-trans isomers and diastereoisomers) in comparison with conventional thinlayer chromatography and-circular paper techniques. Fast and efficient separation on the analytical scale was obtained, including that of epimers not previously separated_ The advantage of HPLC coupled with a LJV-VIS scanning spectrophotometer for the analysis of cis-frans isomerization mixtures of carotenoids is pointed out.
' Mobile phase: acetonehexane (20:80).
📜 SIMILAR VOLUMES
The mean values of alpha and beta-carotene of 10 fruits and vegetables from supermarkets in Cairo and Alexandria have been determined using HPLC method, and the average vitamin A activities (in retinol equivalents) calculated. Carrots, spinach and sweet potatoes were the best sources of provitamin A
Carotenoids contained in plant extracts were analyzed using liquid chromatography/positive-and negative-ion atmospheric pressure chemical ionization mass spectrometry (LC/APCI-MS) with a narrow-bore C,, reversedphase high-performance liquid chromatographic (HPLC) column and a gradient solvent system