The grains of three cultivars of spring barley (Rodos, Rambo, Start) were examined. In these grains phenolic acids were identified and their content – ferulic, vanillic, p-cumaric and caffeic – was determinated too. The antioxidant properites of phenolic acids were examined using free radical scavenging method against stable 2.2-diphenyl-1-pikrylhydrazyl radical (DPPH•). Antiradical efficiency of phenolic acids depended on time of reaction and genotype properties. Results of phenolic acids

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... nt in the studied cultivars grains correlated with their extracts activity. Kernels of Start and Rodos cv. with higher content of pherulic, p-coumaric and caffeic acids were also characterized by higher antioxidant activity as compared to Rambo cv.