Document Detail

Analysis of carotenoid composition in petals of calendula (Calendula officinalis L.).
MedLine Citation:
PMID:  16306694     Owner:  NLM     Status:  MEDLINE    
Nineteen carotenoids were identified in extracts of petals of orange- and yellow-flowered cultivars of calendula (Calendula officinalis L.). Ten carotenoids were unique to orange-flowered cultivars. The UV-vis absorption maxima of these ten carotenoids were at longer wavelengths than that of flavoxanthin, the main carotenoid of calendula petals, and it is clear that these carotenoids are responsible for the orange color of the petals. Six carotenoids had a cis structure at C-5 (C-5'), and it is conceivable that these (5Z)-carotenoids are enzymatically isomerized at C-5 in a pathway that diverges from the main carotenoid biosynthesis pathway. Among them, (5Z,9Z)-lycopene (1), (5Z,9Z,5'Z,9'Z)-lycopene (3), (5'Z)-gamma-carotene (4), and (5'Z,9'Z)-rubixanthin (5) has never before been identified. Additionally, (5Z,9Z,5'Z)-lycopene (2) has been reported only as a synthesized compound.
Sanae Kishimoto; Takashi Maoka; Katsuhiko Sumitomo; Akemi Ohmiya
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Bioscience, biotechnology, and biochemistry     Volume:  69     ISSN:  0916-8451     ISO Abbreviation:  Biosci. Biotechnol. Biochem.     Publication Date:  2005 Nov 
Date Detail:
Created Date:  2005-11-24     Completed Date:  2006-02-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9205717     Medline TA:  Biosci Biotechnol Biochem     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  2122-8     Citation Subset:  IM    
National Institute of Floricultural Science, Ibaraki, Japan.
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MeSH Terms
Calendula / chemistry*
Carotenoids / analysis*,  chemistry
Flowers / chemistry*
Molecular Structure
Plant Extracts / analysis
Spectrophotometry, Ultraviolet
Reg. No./Substance:
0/Plant Extracts; 36-88-4/Carotenoids

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