The massive use of chemical preparations, preservatives and antibiotics in order to protect agricultural products has resulted in the emergence of toxic secondary compounds and resistant microorganisms, which have become a threat to general human health as the ultimate consumption of these products. Improper application of agrotechnical measures during cultivation, unhygienic measures in the process of production, packaging, transport and storage has led to the colonization of both fresh and final agricultural products by potentially pathogenic and pathogenic bacteria and of the genus Pseudomonas sp., Staphylococcus sp., Salmonella sp., Shigella sp., Enterococcus sp., and Escherichia sp. For these reasons, studies have been developed to find new, more effective and safe alternative biopreparations and preservatives, of natural origin, that have the potential to inhibit the growth of these bacteria. The aim of this study was to investigate the antimicrobial effect of essential oil of Erigeron annuus on the growth of the bacterial species Escherichia coli and bacteria of the genus Salmonella sp., in vitro conditions. Chrysooka oil was extracted by the Clavenger water distillation method, and the antimicrobial activity was determined by the Mueller-Hinton test diffusion method. After incubation at a temperature of 37°C for 24 hours, the results were interpreted according to EUCAST (The European Committee on Antimicrobial Susceptibility Testing) and CLSI (Clinical and Laboratory Standards Institute) standards. The obtained results showed that the investigated distillate of this plant species has a stronger inhibitory effect on the growth of bacteria from the genus Salmonella sp., compared to the bacterium species Escherichia coli.
Valjevac et al. (Wed,) studied this question.