Comparison of mycotoxin DON content in spring barley and winter triticale grains | Mikotoksīna DON koncentrācijas salīdzinājums vasaras miežu un ziemas tritikāles graudos
2015
Konosonoka, I.H., State Priekuli Plant Breeding Inst., Priekuļi, Priekuļi parish, Priekuļi municipality (Latvia) | Venta, N., State Priekuli Plant Breeding Inst., Priekuļi, Priekuļi parish, Priekuļi municipality (Latvia) | Vaivode, A., State Priekuli Plant Breeding Inst., Priekuļi, Priekuļi parish, Priekuļi municipality (Latvia) | Piliksere, D., State Priekuli Plant Breeding Inst., Priekuļi, Priekuļi parish, Priekuļi municipality (Latvia) | Legzdina, L., State Priekuli Plant Breeding Inst., Priekuļi, Priekuļi parish, Priekuļi municipality (Latvia) | Kronberga, A., State Priekuli Plant Breeding Inst., Priekuļi, Priekuļi parish, Priekuļi municipality (Latvia)
The aim of the study was to detect the presence and concentration of the mycotoxin DON in grain samples. 51 spring barley and 30 triticale grain samples grown by different crop management practices from three years’ harvest were tested using direct competitive enzymelinked immunosorbent assay (ELISA). A significant effect of the year was found. In 2011 the results of barley analysis were not significantly different from the year of 2012 (p is greater than 0.05). Mycotoxin DON was detected in the concentrations which did not exceed the level specified in the EC Regulation 1881/2006 – 1.25 mg kgE-1, reaching maximum concentration of 0.30 mg kgE-1. The data collected in 2013 significantly surpassed the results obtained in 2011 and 2012 (p is less than 0.05), the average DON concentration was 1.42 mg kgE-1. DON concentration in triticale grain samples was significantly different (p is less than 0.05) between the years. In the year 2013 mycotoxin DON average concentration was 2.88 mg kgE-1 and five triticale samples had exceeded the permitted level for human consumption, reaching concentration of 5 mg kgE-1. No effect of genotype and significant differences in content of DON in organically and conventionally grown samples and in cereal grains grown in different fertilizer backgrounds were found (p is greater than 0.05). However, in the year of 2013 when DON concentration was higher, the average concentration in samples from conventional farming 3–16 times surpassed that of organic samples; the ones with DON concentration above the limit originated from conventional farming.
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