Antimicrobial activity of essential oils against Listeria monocytogenes

Tomičić, M Ružica; Cabarkapa, S Ivana; Varga, O Ana; Tomičić, Marion

doi:10.5937/ffr1801037t

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…The low e ciency is probably due to the losses of volatile compounds of essential oil during storage and/or extraction as it has been observed. The antibacterial activity of several plants against this strain has been studied by (Tomičić et al 2018), where it was found that cinnamon essential oil exhibited the highest activity. Almost the same results of the antibacterial activity of essential oils extracted from C. sinensis peel against Pseudomonas aeruginosa and Staphylococcus aureus were obtained by Edogbanya et al (2019).…”

Section: Discussionmentioning

confidence: 99%

Chemical composition and antioxidant and antibacterial properties of the essential oils extracted from Citrus sinensis peels by hydrodistillation and microwave methods

Hacib,

Lakache,

Aliboudhar

et al. 2023

Environ Sci Pollut Res

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The present study is devoted to evaluate in vitro the Chemical composition, the antioxidant and antibacterial properties of essential oils extracted by hydrodistilation and microwave from the plant peels of Citrus sinensis. The extraction provided yields of 0,26% and 0,02% respectively. The essential oils were analyzed by GC-MS whose major component is limonene has a remarkable percentage (78,192 %) and (58.6%) respectively for the essential oil extracted by HD and MW.The results of the antioxidant potential of essential oils were noticeable in each of essential oils with a noticeable priority to the essential oil extracted by hydrodistilation. The evaluation of the antioxidant power by the free radical scavenging method (dpph) showed that the essential oils studied have good antioxidant activity, especially for the oil extracted by HD having presented an IC 50 of (13,07±0,169) mg / ml, while BHT and Ascorbic acid, showed very potent and effective anti-free radical activity with IC 50 of the order of (19,54±0,32) μg / ml and (1,17±0,05) μg / ml respectively. According to the β-carotene / linoleic acid test, the oxidation of βcarotene was effectively inhibited by the two essential oils of Citrus sinensis peels with a percentage of inhibition of (56,46±0,76) % and (31,39±1,49) % respectively for HD and MW. Eo extracted by HD is more active than Ascorbic acid (15,43%). In the antibacterial test, the activity was evaluated by the discdiffusion method, the two types of sweet orange essential oils inhibited the growth of ve bacterial strains out of six: The best activity was obtained against E. coli, Listeria monocytogenes and Agrobacterium with a diameter of the zone of inhibition between 70 and 84 mm, with the exception of the strain of Bacillus subtilis, there is no zone of inhibition has been observed.

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Section: Discussionmentioning

confidence: 99%

Chemical composition and antioxidant and antibacterial properties of the essential oils extracted from Citrus sinensis peels by hydrodistillation and microwave methods

Hacib,

Lakache,

Aliboudhar

et al. 2023

Environ Sci Pollut Res

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“…All isolates were susceptible to antibiotic classes of fluoroquinolone, carbapenem, and glycylcycline regardless of the types of chickens (Table 4). Salmonella has the capability to adapt to undesirable external environment conditions and it can develop mechanisms to overcome the burden given by the external environment such as antimicrobial drugs (Tomičić et al, 2018). This process is known as antimicrobial resistance.…”

Section: Prevalence Of Antimicrobial Resistance Salmonellamentioning

confidence: 99%

Prevalence and antibiotic resistance of Salmonella in organic and non-organic chickens on the Eastern Shore of Maryland, USA

Punchihewage-Don,

Schwarz,

Diria

et al. 2024

Front. Microbiol.

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IntroductionSalmonella infections have been intensely increasing and becoming a universal public health crisis. This study investigated the prevalence of Salmonella in organic and non-organic chickens and the antimicrobial resistance profiles and virulence genes (invA, pagC, and spvC) in recovered Salmonella isolates.MethodsWhole chicken carcasses [organic (n = 240) and non-organic (n = 240)] were obtained monthly for 1 year (n = 480) from a retail store on the Eastern Shore of Maryland. Salmonella isolation and identification were conducted by following the whole carcass enrichment method recommended by USDA-FSIS. Confirmed Salmonella isolates (organic n = 76; non-organic n = 137) were serotyped and tested for antibiotic susceptibility and virulence genes using standard methods.ResultsForty-nine percent (237/480) of the carcasses were positive for Salmonella. Organic and non-organic positivity rates were 37.1 and 61.8%, respectively. A significantly higher Salmonella contamination was observed in non-organic chickens (p < 0.05). The most common serovars were Salmonella Kentucky (47%), S. Infantis (35%), S. Enteritidis (6%), S. Typhimurium (5%), and S. Blockley (4%). Isolates were frequently resistant to at least one antibiotic (91.24%) or multidrug resistant (45.54%). Resistance was observed to tetracycline (82.8%), minocycline (42.3%), nitrofurantoin (40.3%), cefazolin (38.3%), ampicillin (32.1%), and ceftriaxone (26%). All isolates were susceptible to fluoroquinolone, carbapenem, and glycylcycline. The majority of isolates (99.1%) possessed at least one of three virulence genes of concern and 4.2% tested positive for all three. Ninety-five, 89, and 6.6% of isolates contained invA, pagC, and spvC genes, respectively. The spvC gene was not detected in serovars recovered from organic chickens though 92% and 82% of isolates were positive for invA and pagC. The frequency of Salmonella recovered from non-organic chickens possessing invA, pagC, and spvC genes were 97.1, 89.8, and 10.2%, respectively. Detection of invA and pagC genes showed no significant difference (p > 0.05) between organic and non-organic chickens but a significantly higher spvC gene (p < 0.05) was detected in non-organic chickens due to the majority of S. Enteritidis (92.3%) exclusively recovered from non-organic chicken carried spvC gene.DiscussionThis study reveals a high prevalence of Salmonella in both organic and non-organic chickens, which exhibit resistance to vital antibiotics and carry virulence genes, thereby creating a potential risk of salmonellosis.

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“…The results obtained after qualitative evaluation of antibacterial activity of CST, CST-TTO and CST-CO cues against Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Salmonella typhimuriumare summarized in The, 2000; Emiroğlu et al, 2010;Gómez-Estaca et al, 2010;Moreno, Scheyer, Romano, & Vojnov, 2006;Tomičić, Čabarkapa, Varga, & Tomičić, 2018).…”

Section: Antibacterial Activity: Qualitative Evaluationmentioning

confidence: 99%

Development and characterization of essential oils incorporated chitosan-based cues with antibacterial and antifungal potentialities

Bilal

Zhao

Iqbal

2020

Journal of Radiation Research and Applied Sciences

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Herein, we report the characterization of chitosan-based cues incorporated with two different essential oils, i.e., tea tree oil (TTO) and clove oil (CO). The essential oils incorporated chitosanbased cues offer considerable solutions to eliminate pathogenic infections and/or to reduce microbial contaminations in healthcare facilities. In this background, chitosan(CST)-based cues were incorporated with TTO and CO and final cues were designated as CST-TTO and CST-CO. The loading efficiency was optimal in CST-TTO (91.5%) followed by CST-CO (83.3%). The optimally yielded both, CST-TTO and CST-CO were tested for antibacterial activities against two Gram+ve (Staphylococcus aureus, and Bacillus subtilis) and two Gram-ve strains (Escherichia coliandSalmonella typhimurium). An initial bacterial cell count (1.5 x 10 8 CFU/mL) was considered as a control value, and 2-log reduction was considered to report the antibacterial activity. The antifungal activity was tested against two Aspergillus strains, i.e., Aspergillus niger and Aspergillus flavus. The growth reduction for Aspergillus strains was recorded from 1 × 10 8 conidia/mL (initial count) to 1 × 10 2 conidia/mL (optimal inhibition) in the presence of CST-TTO and CST-CO. In summary, the results suggest that the newly developed CST-TTO and CST-CO cues can be potential candidates for food and biomedical applications as they hold promising capability to restrict some pathogenic and food spoilage microbes. ARTICLE HISTORY

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Antimicrobial activity of essential oils against Listeria monocytogenes

Cited by 8 publications

References 28 publications

Chemical composition and antioxidant and antibacterial properties of the essential oils extracted from Citrus sinensis peels by hydrodistillation and microwave methods

Chemical composition and antioxidant and antibacterial properties of the essential oils extracted from Citrus sinensis peels by hydrodistillation and microwave methods

Prevalence and antibiotic resistance of Salmonella in organic and non-organic chickens on the Eastern Shore of Maryland, USA

Development and characterization of essential oils incorporated chitosan-based cues with antibacterial and antifungal potentialities

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