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PL
Narastająca antybiotykooporność bakterii, w tym szczepów z rodzaju Salmonella, skłania do poszukiwania alternatywnych czynników antybakteryjnych. Przedstawiono wyniki izolacji z próbek środowiskowych bakteriofagów litycznych w stosunku do szczepów Salmonella Enteritidis, zakres ich działania oraz zróżnicowanie genetyczne.
EN
Increasing antibiotic resistance of bacteria, also Salmonella genus strains, incline us to research an alternative antibacterial agents. In these study results of lytic activity for Salmonella Enteritidis strains of bacteriophages isolated from environmental samples, range of activity and their genetic heterogeneity have been presented.
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tom 62
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nr 03
303-305
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.
EN
The objective of the study was to establish the antibacterial activity of various types of honey from the 1990 and 1991 harvests, mainly from the Kraków region, and the ifluence of honey heating on this activity. Staphylococcus aureus 606 was used in all examinations as the test strain. The activity of honey against two other strains of staphylococci, Escherichia coli, Salmonella dublin, S. agona and Pseudomonas aeruginosa was also examined. It was found bat various types of honey substantially differ in their antibacteria activity. The most active appeared to be honeydew and lime honey. Four samples of honey were completely inactive. It was also found that a decrease in antibacterial activity after heating at 50—80°C was lower for honey of a higher antibacterial action. This decrease depends also on the type of honey.
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