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Título: | Variation of glucosinolates in vegetable crops of Brassica rapa |
Autor: | Padilla, Guillermo CSIC ; Cartea González, María Elena CSIC ORCID; Velasco Pazos, Pablo CSIC ORCID; Haro Bailón, Antonio de CSIC ORCID ; Ordás Pérez, Amando CSIC ORCID | Palabras clave: | Brassica rapa Bitterness Consumer panel Glucosinolates Local varieties Turnips |
Fecha de publicación: | 2007 | Editor: | Elsevier | Citación: | Phytochemistry, volume 68, Issue 4, February 2007, Pages 536-545 | Resumen: | Glucosinolate levels in leaves were determined in a collection of 113 varieties of turnip greens (Brassica rapa L.) from northwestern Spain grown at two sites. Sensorial attributes were also assessed by a consumer panel. The objectives were to determine the diversity among varieties in total glucosinolate content and glucosinolate profile and to evaluate their sensory attributes in relation to glucosinolate content for breeding purposes. Sixteen glucosinolates were identified, being the aliphatic glucosinolates, gluconapin and glucobrassicanapin the most abundant. Other aliphatic glucosinolates, such as progoitrin, glucoalyssin, and gluconapoleiferin were relatively abundant in varieties with a different glucosinolate profile. Indolic and aromatic glucosinolate concentrations were low and showed few differences among varieties. Differences in total glucosinolate content, glucosinolate profile and bitterness were found among varieties, with a total glucosinolate content ranging from 11.8 to 74.0 μmol g−1 dw at one site and from 7.5 to 56.9 μmol g−1 dw at the other site. Sensory analysis comparing bitterness with variation in glucosinolate, gluconapin and glucobrassicanapin concentrations suggested that these compounds and their breakdown products are not the only determinants of the characteristic flavour of this vegetable. Other phytochemicals are probably involved on the characteristic bitter flavour. The varieties MBG-BRS0132, MBG-BRS0082, MBG-BRS0173, and MBG-BRS0184 could be good candidates for future breeding programs since they had high total glucosinolate content and good agronomic performance. The presence of glucoraphanin in some varieties should be studied more extensively, because this aliphatic glucosinolate is the precursor of sulforaphane, a potent anti-cancer isothiocyanate. | Versión del editor: | http://dx.doi.org/10.1016/j.phytochem.2006.11.017 | URI: | http://hdl.handle.net/10261/9643 | DOI: | 10.1016/j.phytochem.2006.11.017 | ISSN: | 0031-9422 |
Aparece en las colecciones: | (IAS) Artículos (MBG) Artículos |
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