Macro and trace elements in oat cultivars bred in Latvia

Abstract

The aim of the research was to quantify 13 macro and trace elements in different oat (Avena sativa L.) genotypes depending on the year of cultivation (2011, 2012 and 2013) and crop management practice (conventional or organic), agronomic practice (different N supply) and evaluate the risks regarding Cd, Pb, Cr, Ni, Cu, Zn and Al concentrations and nutritional aspects regarding K, Na, Ca, Mn, Mg, Fe, Cu, Zn and Cr concentrations in oat grain. Elements Cd, Pb, Cr, Ni and Al were detected by electrothermal atomic absorption spectrometry, and K, Na, Zn, Cu, Ca, Mg, Mn and Fe were analysed by flame atomic absorption spectrometry. Cluster analysis showed that genotype and agronomic / crop management practice play an important role in the concentration of macro and trace elements in oat grain. Statistically different concentrations of elements were noticed for Cr, Ni, Zn, K and Mg among the genotypes: for Mn and Fe in grains, grown conventionally or organically, for Cr, Ni, Zn, K and Mg in hulled and naked grain, and for Cd, Pb, Ni, Cu, Al, K, Na and Mg among the study years. The concentrations of potentially hazardous elements were low: Cd 0.008-0.023, Pb 0.014-0.060, Cr 0.117-1.460, Ni 0.447-1.834, Cu 3.2-4.1 and Zn 22.0-32.3 mg kg-1. Oat products can contribute to the consumption of necessary macro and trace elements, especially of Mn, Mg and Fe: 30.0-49.3, 1166-1486 and 33.5-48.9 mg kg-1 , respectively, as well as Cr and Zn.

Impacts of Using Mineral Fertilization Combined with Sewage Sludge in the Amendment of Luvisol on Oat Crop. II. Influence on Metal Accumulation

“…The contents of copper, manganese and zinc found for oat grains in this study are within the values of previous surveys developed for cereal grains [24] and oat grains [25][26][27][28].…”

“…Cadmium contents for oat grains reported by other researchers are much lower than those evidenced in present study, respectively 0.0045-0.0550 mg/kg [27] and 0.008-0.023 mg/kg [28]. As reported by Brunetti et al [30], cadmium levels ranged from 0.03 to 0.1 mg/kg from wheat grains and below detection limit to 0.02 mg/kg for barley grains.…”

Impacts of Using Mineral Fertilization Combined with Sewage Sludge in the Amendment of Luvisol on Oat Crop I. Influence on Yield and Mineral Nutrition

“…Similar calcium levels were reported by Jakobsone et al for oat grains [31,32]. Del Coco et al found the same calcium levels in wheat grains [30].…”

Proximate, mineral and anti-nutrient compositions of oat grains (Avena sativa) cultivated in Ethiopia: implications for nutrition and mineral bioavailability

“…(2016) was 112–120 mg/100 g and Özcan et al. (2017) was 202.5–225.3 mg/100 g Jakobsone et al. (2019) studied the macro and trace elements in oat cultivars bred in Latvia and they found that weather conditions (air temperature and rainfall) influence the amounts of calcium, potassium, sodium, and magnesium.…”