EN
The aim of the experiment was to evaluate antibacterial and antioxidative properties of commercial water extracts prepared from horseradish, mustard, garlic and thyme. Microbial analysis concerned the estimation and comparison of antibacterial activity in the investigated extracts in relation to the Staphylococcus aureus strain, including the effect of various concentrations of each extract, temperature and incubation times. In order to estimate antioxidative properties of the investigated extracts, the power reducing iron was determined, as well as scavenging effect of DPPH radical and total antioxidative power by the FRAP method. Our data indicate that the investigated extracts possess different antibacterial and antioxidative properties. A higher biological activity in relation to the test strain Staphylococcus aureus was observed in extracts from horseradish and garlic, whereas the least effective was the mustard extract, which in turn had the most powerful antioxidative properties.