resumo
The integration of plant metabolomics to support preharvest fruit development studies can provide important insights into the biochemical mechanisms involved and lately support producers on harvesting management. A metabolomic-based strategy for fingerprinting of volatile terpenoids and norisoprenoids from Sambucus nigra L. berries from three cultivars, through ripening, was established. From 42 monoterpenic, 20 sesquiterpenic, and 14 norisoprenoid compounds, 48 compounds are reported for the first time as S. nigra berries components. Chemometric tools revealed that ripening was the factor that influenced more the volatile fraction profile and physicochemical parameters (pH, TS, and TSS), followed by cultivar. For the unripe stages, a higher overall content of the studied metabolites was observed, which gradually decreased over the ripening stages, being consistent for the three cultivars. These trends were mainly ruled by limonene, p-cymene, aromadendrene, beta-caryophyllene, and dihydroedulan, which might therefore be used by producers as an additional simple decision making tool in conjunction with physicochemical parameters.
palavras-chave
2-DIMENSIONAL GAS-CHROMATOGRAPHY; FLIGHT MASS-SPECTROMETRY; MATRICARIA-RECUTITA L.; OLEO-GUM-RESIN; SESQUITERPENIC COMPOUNDS; SENSORY QUALITY; IN-VITRO; ELDERBERRY; FLOWERS; PROFILE
categoria
Agriculture; Chemistry; Food Science & Technology
autores
Salvador, AC; Rudnitskaya, A; Silvestre, AJD; Rocha, SM
nossos autores
Ângelo Miguel Correia Salvador
Bolseiro de pós-Doutoramento
Armando Jorge Domingues Silvestre
Professor Catedráticoagradecimentos
Thanks are due to FCT/MEC for the financial support to the QOPNA research Unit (FCT UID/QUI/00062/2013) and CICECO (FCT UID/CTM/50011/2013), through national funds and where applicable cofinanced by the FEDER, within the PT2020 Partnership Agreement. A.S. thanks the FCT/MEC for the Ph.D. grant (SFRH/BD/73778/2010) through the program POPH/FSE.