Photochemical and thermal degradation of a naturally occurring dye used in artistic painting. A chromatographic, spectrophotometric and fluorimetric study on saffron
Saffron is a yellow substance which is extracted from the stigmas of Crocus sativus L. and is used in painting, cooking and medicine. In this paper six components (trans and cis crocins) with carotenoid structures were separated from natural saffron by HPLC and were characterised by their absorption...
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| Format: | Article |
| Language: | English |
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Wiley
2004-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/S1110662X04000224 |
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| _version_ | 1832548803531505664 |
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| author | Vida Vickackaite Aldo Romani Danilo Pannacci Gianna Favaro |
| author_facet | Vida Vickackaite Aldo Romani Danilo Pannacci Gianna Favaro |
| author_sort | Vida Vickackaite |
| collection | DOAJ |
| description | Saffron is a yellow substance which is extracted from the stigmas of Crocus sativus L. and is
used in painting, cooking and medicine. In this paper six components (trans and cis crocins) with carotenoid
structures were separated from natural saffron by HPLC and were characterised by their absorption and
emission spectra. Photochemical and thermal processes which degrade the dye were also investigated. The
effect of light promoted the cis ⇄ trans isomerization, while the thermal effect detached the glycosyl moieties. |
| format | Article |
| id | doaj-art-26c58e534cdf4c19857cacd984d17c69 |
| institution | Kabale University |
| issn | 1110-662X |
| language | English |
| publishDate | 2004-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-26c58e534cdf4c19857cacd984d17c692025-02-03T06:12:56ZengWileyInternational Journal of Photoenergy1110-662X2004-01-016417518310.1155/S1110662X04000224Photochemical and thermal degradation of a naturally occurring dye used in artistic painting. A chromatographic, spectrophotometric and fluorimetric study on saffronVida Vickackaite0Aldo Romani1Danilo Pannacci2Gianna Favaro3Department of Analytical and Environmental Chemistry, Vilnius University, Vilnius 2006, LithuaniaDipartimento di Chimica, Università di Perugia, Perugia 06123, ItalyDipartimento di Chimica, Università di Perugia, Perugia 06123, ItalyDipartimento di Chimica, Università di Perugia, Perugia 06123, ItalySaffron is a yellow substance which is extracted from the stigmas of Crocus sativus L. and is used in painting, cooking and medicine. In this paper six components (trans and cis crocins) with carotenoid structures were separated from natural saffron by HPLC and were characterised by their absorption and emission spectra. Photochemical and thermal processes which degrade the dye were also investigated. The effect of light promoted the cis ⇄ trans isomerization, while the thermal effect detached the glycosyl moieties.http://dx.doi.org/10.1155/S1110662X04000224 |
| spellingShingle | Vida Vickackaite Aldo Romani Danilo Pannacci Gianna Favaro Photochemical and thermal degradation of a naturally occurring dye used in artistic painting. A chromatographic, spectrophotometric and fluorimetric study on saffron International Journal of Photoenergy |
| title | Photochemical and thermal degradation of a naturally occurring dye used in artistic painting. A chromatographic, spectrophotometric and fluorimetric study on saffron |
| title_full | Photochemical and thermal degradation of a naturally occurring dye used in artistic painting. A chromatographic, spectrophotometric and fluorimetric study on saffron |
| title_fullStr | Photochemical and thermal degradation of a naturally occurring dye used in artistic painting. A chromatographic, spectrophotometric and fluorimetric study on saffron |
| title_full_unstemmed | Photochemical and thermal degradation of a naturally occurring dye used in artistic painting. A chromatographic, spectrophotometric and fluorimetric study on saffron |
| title_short | Photochemical and thermal degradation of a naturally occurring dye used in artistic painting. A chromatographic, spectrophotometric and fluorimetric study on saffron |
| title_sort | photochemical and thermal degradation of a naturally occurring dye used in artistic painting a chromatographic spectrophotometric and fluorimetric study on saffron |
| url | http://dx.doi.org/10.1155/S1110662X04000224 |
| work_keys_str_mv | AT vidavickackaite photochemicalandthermaldegradationofanaturallyoccurringdyeusedinartisticpaintingachromatographicspectrophotometricandfluorimetricstudyonsaffron AT aldoromani photochemicalandthermaldegradationofanaturallyoccurringdyeusedinartisticpaintingachromatographicspectrophotometricandfluorimetricstudyonsaffron AT danilopannacci photochemicalandthermaldegradationofanaturallyoccurringdyeusedinartisticpaintingachromatographicspectrophotometricandfluorimetricstudyonsaffron AT giannafavaro photochemicalandthermaldegradationofanaturallyoccurringdyeusedinartisticpaintingachromatographicspectrophotometricandfluorimetricstudyonsaffron |