Effect of genotype and crop management systems on the content of antioxidants in hulless and covered spring barley

This paper deals with studies of the content of some antioxidants in barley (Hordeum vulgare L.), which is one of the major cereal species with extensive application in food products with increased nutritional value. We studied the effect of genotype and environment on the content of -tocopherol and total polyphenol content in grain and grain oil and phenolic compounds in grain of two covered and four hulless barley genotypes grown under one organic and three conventional management systems with increasing agrochemical input during 2011-2012. -Tocopherol in grain and oil during both years ranged between 1.49-14.51 mg kg -1 and 9.24-88.32 mg 100 g -1 , respectively, with particularly low values in comparatively cooler and wetter year 2012. Total polyphenol content in grain and oil ranged between 81.66-140.13 and 0.19-8.52 mg gallic acid equivalents (GAE) 100 g -1 , respectively. We identified 13 phenolic compounds with the highest concentration for ferulic acid, followed by p-coumaric and syringic acids.