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Determining gluten quality in Ukraine, unlike in other regions of the world, is of critical importance. This is because the harmful grain weevil is very widespread in Ukraine, causing damage to up to 20% of the grain in some years. The maximum permissible damage level is 2–3%.

Gluten quality is characterized by its physical properties—toughness, extensibility, elasticity, water absorption and gas retention capacity.

Winter wheat grains of the varieties ‘Poliska 90’, ‘Natsionalna’, ‘Smuglyanka’, ‘Podolyanka’, ‘Myronivska 65’, and ‘Perlyna Lisostepu’ were studied. The wheat grains were stored for 12 months in an uncontrolled environment (in warehouse conditions) and under controlled temperature conditions (at 5–10°C) in linen bags.