Nutritional Quality of Triticale (×Triticosecale Wittm.) Grown under Different Cropping Systems
2017
Straumīte, Evita | Galoburda, Ruta | Tomsone, Lolita | Krūma, Zanda | Grāmatiņa, Ilze | Kronberga, Arta | Stūrīte, Ieviņa
Triticale (× Triticosecale Wittm.) is mainly used for animal feed, but recent studies have shown its possible beneficial effect for human health. The objective of this study was to investigate the nutritional quality of triticale grown under different cropping systems in Latvia. Two winter triticale varieties, ‘Inarta’ and ‘Ruja’, were cultivated in 2014 and 2015 under conventional and organic cropping systems. Protein, starch, and total dietary fibre were determined using standard methods. Ultrasound assisted extraction was used for isolation of phenolic compounds. Total phenol content (TPC) and radical scavenging activity in extracts were determined spectrophotometrically. Overall, the highest content of protein, TPC and ABTS cation scavenging activity occurred in triticale harvested in 2014, due to favourable weather conditions (warm weather and more precipitation in June–July) for accumulation of these compounds during grain filling. Higher starch content in all studied samples harvested in 2015, as compared to 2014, was explained by higher precipitation in July 2015. The type of cropping system had no significant effect (p > 0.05) on protein and starch content, while TPC, DPPH, and ABTS·⁺ scavenging activity was influenced by cropping system, depending on variety.
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