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Publication Type J
Authors Murteira, M., A. E. Turcios, R. Calado, A. I. Lillebo and J. Papenbrock
Title Relevance of nitrogen availability on the phytochemical properties of Chenopodium quinoa cultivated in marine hydroponics as a functional food
Source Scientia Horticulturae
Language English
Author Keywords Antioxidants Aquaponics Extractive species Halophytes Secondary metabolites Circular economy moringa leaf extract antioxidant activity nutritional quality hydrogen-peroxide fruit-quality potential use plant-growth yield tolerance stress Agriculture
Abstract Chenopodium quinoa is a salt tolerant plant species of high nutritional value with potential to act as an extractive species under marine integrated multi-trophic aquaculture (IMTA). This study aimed to assess the growth performance and antioxidant content and activity of C. quinoa cultivated in saline hydroponics under contrasting nitrogen concentrations mimicking different aquaculture effluents described in literature. Seedlings were cultivated under greenhouse conditions in a modified Hoagland solution with a salinity of 20 g l- 1 artificial sea salt and four nitrogen concentrations: 20 mg l- 1 (N20); 40 mg l- 1 (N40); 100 mg l- 1 (N100) and 200 mg l- 1 (N200). After 4 weeks, leaf chlorophyll content and biomass gain were determined. Total flavonoids, total phenols and contents of elements were analyzed in C. quinoa leaves and shoot tips. Antioxidant capacity was quantified using oxygen radical absorbance capacity assay (ORAC). In treatments N100 and N200, C. quinoa presented higher biomass gain and lower antioxidant content and activity in its leaves and shoot tips. In contrast, in treatment N20 higher antioxidant content and activity were recorded, revealing the existence of stress inducing conditions during the experimental period. Shoot tips of these plants contained higher nitrogen and mineral contents than leaves. This approach may set the stage to develop a sustainable methodology to modulate the secondary metabolism of C. quinoa and enhance its value as functional food when cultured using marine aquaponics in IMTA systems.
Author Address [Murteira, Mariana; Calado, Ricardo; Lillebo, Ana, I] Univ Aveiro, Ctr Environm & Marine Studies CESAM, Dept Biol, ECOMARE, Campus Univ Santiago, P-3810193 Aveiro, Portugal. [Turcios, Ariel E.; Papenbrock, Jutta] Leibniz Univ Hannover, Inst Bot, Herrenhauserstr 2, D-30419 Hannover, Germany. Lillebo, AI (corresponding author), Univ Aveiro, Ctr Environm & Marine Studies CESAM, Dept Biol, ECOMARE, Campus Univ Santiago, P-3810193 Aveiro, Portugal.; Papenbrock, J (corresponding author), Leibniz Univ Hannover, Inst Bot, Herrenhauserstr 2, D-30419 Hannover, Germany. lillebo@ua.pt; Jutta.Papenbrock@botanik.uni-hannover.de
ISSN 0304-4238
ISBN 0304-4238
29-Character Source Abbreviation Sci. Hortic.
Publication Date Jan
Year Published 2022
Volume 291
Beginning Page 10
Digital Object Identifier (DOI) 10.1016/j.scienta.2021.110524
Unique Article Identifier WOS:000697541900004

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