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Lookup NU author(s): Dr Marcin Baranski, Gultakin Hasanaliyeva, Emeritus Professor Chris SealORCiD, Dr Paul BilsborrowORCiD, Professor Carlo Leifert, Dr Leo RempelosORCiD, Dr Nikolaos Volakakis
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
Previous studies reported higher antioxidant and mineral micronutrient concentrations in organic compared to conventional wheat flour, but the reasons are poorly understood. Here we report results from a long-term, factorial field experiment designed to assess effects of variety choice, supplementary irrigation and contrasting fertilization regimes used in organic and conventional production on the nutritional quality and yield of spelt wheat grown in a semi-arid environment. Long-straw (Oberkulmer, Rubiota, ZOR) varieties had 10-40% higher grain Cu, Fe, Mn and Zn concentrations, while the modern, short straw variety Filderstolz had 15-38% higher grain antioxidant activity. Supplementary irrigation and the use of manure instead of mineral NPK as fertilizer had no substantial effect on the nutritional composition of spelt grain, but increased grain yields by ⁓150 and ⁓18% respectively. Overall, this suggests that breeding/variety selection is the most promising approach to improve the nutritional quality of spelt grain in semi-arid production environments.
Author(s): Wang J, Barański M, Hasanaliyeva G, Korkut R, Kalee HA, Leifert A, Winter S, Janovska D, Willson A, Barkla B, Iversen PO, Seal C, Bilsborrow P, Leifert C, Rempelos L, Volakakis N
Publication type: Article
Publication status: Published
Journal: Food Chemistry
Year: 2021
Volume: 358
Print publication date: 01/10/2021
Online publication date: 20/04/2021
Acceptance date: 15/04/2021
Date deposited: 29/04/2021
ISSN (print): 0308-8146
ISSN (electronic): 1873-7072
Publisher: Science Direct
URL: https://doi.org/10.1016/j.foodchem.2021.129826
DOI: 10.1016/j.foodchem.2021.129826
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