Taxonomic group: plant / Streptophyta
(Phylum: Streptophyta)
Organ / tissue: fruit
NCBI PubMed ID: 10898604Publication DOI: 10.1021/jf000070pJournal NLM ID: 0374755Publisher: American Chemical Society
Correspondence: a.crozier
bio.gla.ac.uk
Institutions: Division of Biochemistry and Molecular Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UK, Department of Human Nutrition, University of Glasgow, Queen Elizabeth Building, Royal Infirmary, Glasgow, Scotland, UK
The flavonol contents of 20 varieties of tomato fruit were investigated in relation to variety, size, season, and country of origin. Ten commonly consumed tomato-based food products were also assessed. Free and conjugated flavonols were identified and quantified using reversed-phase HPLC. Ninety-eight percent of flavonols detected in tomatoes were found to occur in the skin. Tomatoes contained, primarily as conjugates, quercetin and kaempferol. The main quercetin conjugate was identified as rutin (quercetin 3-rhamnosylglucoside) by LC-MS. The total flavonol content of the different varieties of tomato that were analyzed varied from 1.3 to 22.2 μg/g of fresh weight (fw). Smaller cherry tomato fruits originating from warm sunny climates, such as Spain and Israel, were found to contain the highest concentration of flavonols. Among the tomato-based products investigated, tomato juice and tomato purée were rich in flavonols, containing 14−16 μg/mL and 70 μg/g fw, respectively. In contrast to fresh tomatoes, most tomato-based products contained significant amounts of free flavonols.
flavonols; rutin; quercetin; kaempferol; fresh tomatoes; canned tomatoes; tomato juice; tomato purée; tomato soup; HPLC
Structure type: oligomer ; 609 [M-H]-
C
27H
30O
16Location inside paper: p. 2665, Fig. 2, rutin
Trivial name: rutin
Compound class: glycoside, flavonoid glycoside, flavone glycoside
Contained glycoepitopes: IEDB_136105,IEDB_142488,IEDB_144144,IEDB_146664,IEDB_225177,IEDB_885823,IEDB_983931,SB_192
Methods: extraction, LC-MS, RP-HPLC
NCBI Taxonomy refs (TaxIDs): 4081
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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(later renamed to: Solanum lycopersicum)