title: Characterization and quantification of phenolic compounds in four tomato (Lycopersicon esculentum L.) farmers' varieties in northeastern Portugal homegardens.
abstract: Tomato (Lycopersicon esculentum L.) is one of the most widely consumed fresh and processed vegetables in the world, and contains bioactive key components. Phenolic compounds are one of those components and, according to the present study, farmers' varieties of tomato cultivated in homegardens from the northeastern Portuguese region are a source of phenolic compounds, mainly phenolic acid derivatives. Using HPLC-DAD-ESI/MS, it was concluded that a cis p-coumaric acid derivative was the most abundant compound in yellow (Amarelo) and round (Batateiro) tomato varieties, while 4-O-caffeolyquinic acid was the most abundant in long (Comprido) and heart (Coração) varieties. The most abundant flavonoid was quercetin pentosylrutinoside in the four tomato varieties. Yellow tomato presented the highest levels of phenolic compounds (54.23 μg/g fw), including phenolic acids (43.30 μg/g fw) and flavonoids (10.93 μg/g fw). The phenolic compounds profile obtained for the studied varieties is different from other tomato varieties available in different countries, which is certainly related to genetic features, cultivation conditions, and handling and storage methods associated to each sample.
authors.affiliation: CIMO/Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, Portugal.
authors.forename: Lillian
authors.initials: L
authors.lastname: Barros
authors.forename: Montserrat
authors.initials: M
authors.lastname: Dueñas
authors.forename: José
authors.initials: J
authors.lastname: Pinela
authors.forename: Ana Maria
authors.initials: AM
authors.lastname: Carvalho
authors.forename: Celestino Santos
authors.initials: CS
authors.lastname: Buelga
authors.forename: Isabel C F R
authors.initials: IC
authors.lastname: Ferreira
mesh_terms: D000383:Agriculture; D003373:Coumaric Acids / Q000032:analysis; D004032:Diet; D005419:Flavonoids / Q000032:analysis*; D005638:Fruit / Q000737:chemistry*; D051639:Gardening; D006801:Humans; D062385:Hydroxybenzoates / Q000032:analysis; D018551:Solanum lycopersicum / Q000737:chemistry* / Q000145:classification; D010636:Phenols / Q000032:analysis*; D011174:Portugal; D011794:Quercetin / Q000032:analysis; D013045:Species Specificity
chemical_list: D003373:Coumaric Acids; D005419:Flavonoids; D062385:Hydroxybenzoates; D010636:Phenols; D011794:Quercetin; C017616:phenolic acid