The total content of antioxidantsin barley grain grown in the conditions of the republics of Khakassia and Tyva

The research objective was studying a genotype-environmental influence on the total content of antioxidants (TCA) in barley grain. The total content of antioxidants (TCA) in the grain of 10 barley samples grown in two different climatic conditions geographical locations was studied. One of them was located in Piy-Khemstate varietal plot (Republic of Tyva), the other in Bey state varietal plot (Republic of Khakasia). In Tyva the maximum daytime temperatures were higher and the minimum night temperatures were lower, which created a more contrasting difference in the daily course of temperature. Grain extraction was carried out by two methods - using hot bidistilled water and 70 % alcohol. The level of TCA was measured by the device "Tsvet-Yauza-01-AA". Gallic acid was used as a comparison sample. It was shown that almost identical results were registered when using two extraction methods. It was found that the value of TCA in different varieties of barley varied from 44 to 88 mg/100 g dry weight...