Food Chem 2021 Oct 20;358:129826. Epub 2021 Apr 20.
Nafferton Ecological Farming Group, School of Agriculture, Food and Rural Development, Newcastle University, NE1 7RU, Newcastle upon Tyne, Tyne and Wear, UK; Geokomi plc, P.O. Box 21, Sivas Festos, GR70200 Crete, Greece. Electronic address:
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. Read More