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| Content Provider | Springer Nature Link |
|---|---|
| Author | Berger, Terry A. Berger, Blair K. |
| Copyright Year | 2013 |
| Abstract | The natural pigments in paprika were rapidly and efficiently separated by ultra high performance supercritical fluid chromatography. The separation of both un-saponified and saponified mixtures of paprika oleoresin were optimized, with run times of 10.6 min. Three different C18 columns, a cyano, silica and diol column, all 3 × 100 mm, with 1.8 μm particles were compared. The best separation for the un-saponified sample was found with an SB-C18 column, while the saponified samples were best separated on a bare silica, RX-Sil column. A SB-CN column allowed near optimum separation of both the unsaponified, and saponified samples, with similar run times. The best mobile phase was carbon dioxide (CO2) modified with isopropyl alcohol (IPA), with a composition gradient. Fingerprints of several commercial pepper products indicated that one appeared to be colored with artificial dyes, while the color of a chili powder may have been enhanced with a paprika extract. Spectra, using CO2 with IPA as modifier, produced a single maximum at 453 nm, which appears to represent up to a 30 nm solvatochromic shift from the maxima in most organic solvents. Acetonitrile (ACN) as modifier produced spectra with two maxima and a similar solvatochromic shift. These results appear to be the first on saponified paprika oleoresin samples using SFC. It is also the first detailed report on the separation of un-saponified samples. The results are up to six times faster than comparable results by HPLC. It appears that SFC is a viable, superior alternative to HPLC for the analysis of this important commercial product, without using ACN, or chlorinated solvents. |
| Starting Page | 591 |
| Ending Page | 601 |
| Page Count | 11 |
| File Format | |
| ISSN | 00095893 |
| Journal | Chromatographia |
| Volume Number | 76 |
| Issue Number | 11-12 |
| e-ISSN | 16121112 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2013-04-18 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Ultra high performance supercritical fluid chromatography (UHPSFC) Sub-2 μm particles Solvatochromic shift Paprika oleoresin Capsanthin Natural food dyes Chromatography Proteomics Pharmacy Laboratory Medicine |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry |
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