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Basis for the new challenges of growing broccoli for health in hydroponics

AuthorsMoreno, Diego A. ; López-Berenguer, Carmen ; Martínez-Ballesta, M. Carmen ; Carvajal, Micaela ; García-Viguera, Cristina
KeywordsBrassica oleracea var. italica
Hydroxycinnamic acids
Vitamin C
Soilless culture
Issue Date23-Apr-2008
PublisherJohn Wiley & Sons
CitationJournal of the science of food and agriculture 88(8): 1472-1481 (2008)
Abstract[BACKGROUND] Variations in the contents of phytochemicals with biological activity in broccoli could originate as a result of genetic and environmental factors. An understanding of the effects of growth conditions on the bioactive compounds in broccoli is essential for improving its quality and nutritive value. Using salinity (40 mmol L-1 NaCl), and foliar sprayed compounds (methionine, tryptophan and chitosan) as different stress conditions, broccoli developed in soilless culture in the greenhouse was analysed for biologically active phytochemicals (glucosinolates, caffeoyl-quinic, ferulic and sinapic derivatives and vitamin C).
[RESULTS] The application of elicitors during head formation could be beneficial for the enrichment in phytochemicals in broccoli. Management practices for increasing a given phytochemical (e.g., glucoraphanin or glucobrassicin) may be related to a decreased level of natural antioxidants (hydroxycinnamic acids). Growing broccoli hydroponically in the greenhouse in winter (Mediterranean climate) needs the supporting treatment of abiotic stress during development (i.e., NaCl, elicitors).
[CONCLUSION] The use of hydroponic growth conditions for broccoli and the application of stress factors (elicitors) at head induction and during development may serve the purpose of enhancing its nutritional quality to deliver a health-promoting food. Copyright © 2008 Society of Chemical Industry
Description10 pages, 4 figures, 7 tables.
Publisher version (URL)http://dx.doi.org/10.1002/jsfa.3244
Appears in Collections:(CEBAS) Artículos
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