Antioxidant activity and total phenolic compounds in extracts of selected grasses (Poaceae).

The total content of phenolic compounds and DPPH• radical scavenging were determined in the aerial parts of three selected grass species: Miscanthus sinensis, dichanthium caucasicum derived from the collection of grasses at the Plant Breeding and Acclimatization Institute (IHAR), Botanical Garden in Bydgoszcz and Phragmites australis derived from natural source. In general, the average amount of polyphenols in selected species: 1.1795±0.1608; 1.4108±0.1086; 0.8103±0.0335 (M. sinensis; d. caucasicum; P. australis, respectively) was low. The DPPH• radical scavenging activity (%) in each investigated sample was also relatively low: 27.00±1.98; 21.22±1.14%; 15.89±0.49 (M. sinensis; d. caucasicum; P. australis respectively).