Abstract
Aim of this study was to investigate the antimicrobial properties of herbal plant essential oils (EOs) from selected Iranian plant species such as Ferulago angulata, Zataria multiflora, Cuminum cyminum, and Mentha longifolia against antibiotic-resistant Escherichia coli (E. coli) strains. For this purpose, the Escherichia coli strains, isolated from raw cow’s milk and local dairy products (yogurt, cream, whey, cheese, and confectionery products) collected from different areas of Hamedan province, Iran, were investigated for their resistance to antibiotics (i.e., streptomycin, tetracycline, gentamicin, chloramphenicol, ciprofloxacin, and cefixime). Thus, the E. coli strains were tested for their susceptibility to the above-mentioned essential oils. Regarding antibiotics, the E. coli strains were highly sensitive to ciprofloxacin. In relation to essential oils, the most effective antibacterial activity was observed with Zataria multiflora; also, the bacteria were semi-sensitive to Cuminum cyminum and Mentha longifolia essential oils. All strains were resistant to Ferulago angulata essential oil. According to the results, the essential oil of Zataria multiflora can be considered as a practical and alternative antibacterial strategy to inhibit the growth of multidrug-resistant E. coli of dairy origin.
Highlights
Accepted: 31 December 2021Escherichia coli (E. coli) is one of the most important microorganisms causing infections of the digestive and urinary tracts in humans and animals
25,922; Lane B: 100-bp DNA ladder; Lane C: no template; Lane D–J: show the polymerase chain reaction (PCR) products amplified with DNA from Escherichia coli strain RE11, RE12, RE13, RE14, RE15, RE16, and RE17, respectively
Some similarities were found with Rezaei et al (2019), who found in E. coli strains isolated from pastry cream prepared in Hamadan, Iran, the highest resistance to tetracycline, vancomycin, oxacillin (100%), and penicillin (72.34%) and the highest sensitivity to chloramphenicol (78.23%), ciprofloxacin (76.59%), and nalidixic acid (61.70%) [32]
Summary
Accepted: 31 December 2021Escherichia coli (E. coli) is one of the most important microorganisms causing infections of the digestive and urinary tracts in humans and animals. E. coli is one of the most important and leading causes of mastitis in cattle, from which the pathogen can be transmitted to consumers through milk and dairy products [2] In this regard, due to the excessive use of antibiotics used to control these diseases, significant resistance to a wide range of antibiotics has developed in several E. coli strains [3,4]. Due to the excessive use of antibiotics used to control these diseases, significant resistance to a wide range of antibiotics has developed in several E. coli strains [3,4] For this reason, the presence of the multi-drug pathogens in foods of animal origin such as milk, meat, and poultry has dramatically increased in recent years [5]. Many studies are focusing on finding new and effective antimicrobial agents such as essential oils (EOs), Published: 5 January 2022
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
