Stability of yellow and red rose pigments during their storage under different conditions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F01%3A00002557" target="_blank" >RIV/60460709:41210/01:00002557 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Stability of yellow and red rose pigments during their storage under different conditions
Original language description
The composition and stability of pigments isolated from yellow rose (cv. Papillon or Papillion Rose) and red rose (cv. Red France) were investigated. Thin layer chromatography and spectral data were used for pigments identification. b-Carotene, its 5,6,5´,6´-diepoxide, lutein, lycopene, zeaxanthin and phytofluene were identified as major carotenoids in acetone extract of the yellow rose petals. Cyanin and chrysanthemin were found as major anthocyanin constituents in acidic (HCl) methanolic extract of the red rose petals. The extracts were stored in a closed glass bottle under four different conditions (temperatures 22, 4 and - 8 oC, dark or daylight at 22 oC) and the pigments were determined periodically up to 132 days. Carotenoids were found to be much more stable (42 - 100.9 % of the initial values at day 132) than anthocyanins (9.2 - 14.9 % of the initial values). Losses of carotenoids fit to Arrhenius equation (correlation coefficient 0.894) and low activation energy indicates oxid
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CE - Biochemistry
OECD FORD branch
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Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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