Chemical Characterization and Antibacterial Activity of Essential Oil of Medicinal Plants from Eastern Serbia

Aćimović, Milica; Zorić, Miroslav; Zheljazkov, Valtcho D.; Pezo, Lato; Čabarkapa, Ivana; Jeremić, Jovana Stanković; Cvetković, Mirjana

doi:10.3390/molecules25225482

Cited by 21 publications

(16 citation statements)

References 81 publications

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“…However, it is well known that several chemotypes of Thymus serpyllum have been described until now [ 26 , 27 , 28 ]; as differences in chemical composition have a notable influence on investigated biological activities, new data are of great importance. Besides, it is well known that EOs’ chemical composition, contributing to their medicinal value and being responsible for the biological properties, highly depends on many factors such as geographical and climatic conditions, harvesting, isolation techniques, as well as storage [ 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Natural Agents against Bovine Mastitis Pathogens

et al. 2021

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Bovine mastitis is the most widespread and economically important disease worldwide. The present study aimed to determine bioactive compounds in two essential oils (EOs) from wild (Thymus serpyllum) and common thyme (Thymus vulgaris) and to assess the antioxidant potential as well as antibacterial efficacy of the EOs against mastitis-associated bacteria. The study also included antibiotic susceptibility tests. The strains were previously isolated from lactating animals with clinical and subclinical mastitis. The antioxidant potential of the commercial EOs of wild and common thyme was evaluated by five in vitro assays. The antibacterial activity was performed using the microdilution technique, while antibiotic susceptibility testing was performed by the Kirby–Bauer disc diffusion method. The dominant compound in wild thyme was thymol (45.22%), followed by p-cymene (23.83%) and γ-terpinene (3.12%), while in common thyme, it was thymol (54.17%), followed by γ-terpinene (22.18%) and p-cymene (16.66%). Among the fourteen mastitis-associated bacteria, strain IX Streptococcus spp. (β-hemolytic) was the most sensitive to the tested EOs (minimum inhibitory concentration (MIC)/minimal bactericidal concentration (MBC) were 0.78/1.56 and 0.39/0.78 mg/mL for T. serpyllum (TS) and T. vulgaris (TV), respectively). Regarding Streptococcus spp. β heamoliticus, MICs for TS ranged from 0.78 to 1.56 mg/mL, while for the same oil, MBCs ranged from 1.56 to 12.5 mg/mL. In the case of T. vulgaris, MICs ranged from 0.39 to 3.125 mg/ mL, while MBCs ranged from 3.125 to 6.25 mg/mL. TV is more active against E. coli, E. sakazakii, and Streptococcus spp., while it is less effective against Staphylococcus spp. than TS. The study revealed that the tested EOs possess remarkable antioxidative and antibacterial activities and could be used in the development of pharmaceutical formulation as an alternative to conventional mastitis therapy.

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Section: Introductionmentioning

confidence: 99%

Natural Agents against Bovine Mastitis Pathogens

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“…So far, published studies on in vitro antimicrobial activity of EOs originating from Serbia mainly examined different foodborne pathogens, such as S. enteritidis , E. coli , S. typhimurium , and Staphylococcus aureus [ 17 , 18 , 19 ], as well fungi [ 20 ], but none was focused on bovine mastitis pathogens.…”

Section: Introductionmentioning

confidence: 99%

New Perspective of Origanum vulgare L. and Satureja montana L. Essential Oils as Bovine Mastitis Treatment Alternatives

et al. 2021

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Mastitis represents a heavy burden for the dairy sector worldwide with high economic and animal welfare impact. Antibiotic treatment is an important component of mastitis control programs. However, emergence and transfer of antimicrobial-resistant (AMR) bacteria is becoming a growing concern. Therefore, the development of novel agents is required for prevention and treatment of mastitis. Hence, our aim was to assess the antibacterial properties of two essential oils (EOs) obtained from oregano (Origanum vulgare L., Lamiaceae) and mountain savory (Satureja montana L., Lamiaceae) against mastitis-associated bacteria in Serbia. The chemical composition and antioxidant potential of these EOs were also evaluated. The present study was conducted on strains derived from aseptic milk samples collected from Holstein-Friesian cows with clinical or subclinical mastitis, during the morning milking. Clinical mastitis was assessed by clinical examination, while subclinical mastitis was confirmed using somatic cell count in the milk samples. The microdilution method was used to determine the antibacterial activity, while antioxidant potential of the EOs was evaluated in several in vitro assays. The values of minimal inhibitory concentrations (MICs) and minimal bactericidal concentrations (MBCs) were used to quantitatively measure the antibacterial activity of each EO. MIC/MBC ranged from 0.78/6.25 and 0.39/0.78 mg/mL for oregano and mountain savory, respectively. A total of 25 compounds were identified in the oregano EO, while 47 were identified in winter savory EO, among which aromatic oxygenated monoterpenes were the most abundant compounds. The tested EOs have shown promising antimicrobial activity and could be considered as one of the treatment approaches in mastitis-affected cows.

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“…These applications are mentioned in other traditional medicine as well (5), corroborated by experiments (6). Modern scientific investigations show that it possesses anti-inflammatory (7), antioxidant and antibacterial activities (8,9), as well as antican- Original scientific paper 124 cer properties (10). The aim of this investigation is to determine essential oil composition of A. millefolium sensu lato from Mt Rtanj and to develop a QSRR model for predicting the retention times of chemical compounds from the essential oil.…”

Section: Introductionmentioning

confidence: 99%

The quantitative structure-retention relationship of the GC-MS profile of yarrow essential oil

et al. 2021

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In the essential oil of yarrow (Achillea millefolium L. sensu lato) collected from natural population on Mt. Rtanj (Serbia) and distilled by Clevenger apparatus 104 compounds were detected, and the most abundant were camphor (9.8%), caryophyllene oxide (6.5%), terpinen-4-ol (6.3%) and 1,8- cineole (5.6%). The quantitative structure-retention relationship (QSRR) model was employed to predict the retention indices, using four molecular descriptors selected by factor analysis and a genetic algorithm. The coefficients of determination reached the value of 0.862, demonstrating that this model could be used for prediction purposes.

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Chemical Characterization and Antibacterial Activity of Essential Oil of Medicinal Plants from Eastern Serbia

Cited by 21 publications

References 81 publications

Natural Agents against Bovine Mastitis Pathogens

Natural Agents against Bovine Mastitis Pathogens

New Perspective of Origanum vulgare L. and Satureja montana L. Essential Oils as Bovine Mastitis Treatment Alternatives

The quantitative structure-retention relationship of the GC-MS profile of yarrow essential oil

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