scholarly journals Antimicrobial Activity of Chitosan Films With Essential Oils Against Listeria monocytogenes on Cabbage

2016 ◽  
Vol 9 (9) ◽  
Author(s):  
Gordana D. Jovanovic ◽  
Anita S. Klaus ◽  
Miomir P. Niksic
Keyword(s):  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oils ◽  
Chitosan Films

Antimicrobial Effect of Thai Spices against Listeria monocytogenes and Salmonella Typhimurium DT104

2005 ◽  
Vol 68 (10) ◽  
pp. 2054-2058 ◽  
Author(s):  
CHITSIRI THONGSON ◽  
P. MICHAEL DAVIDSON ◽  
WARAPA MAHAKARNCHANAKUL ◽  
PREEYA VIBULSRESTH
Keyword(s):  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oils ◽  
Salmonella Typhimurium ◽  
Pathogenic Bacteria ◽  
Apple Juice ◽  
Food System ◽  
Dilution Assay ◽  
Agar Dilution ◽  
Over Time

The objective of this study was to determine the potential antimicrobial activity of extracts and essential oils of spices from Thailand against foodborne pathogenic bacteria. The antimicrobial efficacy of ginger (Zingiber officinale), fingerroot (Boesenbergia pandurata), and turmeric (Curcuma longa) was evaluated against five strains of Listeria monocytogenes and four strains of Salmonella enterica ssp. enterica serovar Typhimurium DT104. Antimicrobial activity was investigated in microbiological media by using an agar dilution assay and enumeration over time and a model food system, apple juice, by monitoring growth over time. In the agar dilution assay, water extracts of the three spices had no effect on L. monocytogenes. Similarly, 50% ethanol extracts of ginger or turmeric had no effect. In contrast, ethanolic fingerroot extracts at 5 to 10% (vol/vol) inhibited most L. monocytogenes strains for 24 h in the agar dilution assay. Commercial essential oils (EO) of ginger or turmeric inhibited all L. monocytogenes at ≤0.6 or ≤10%, respectively. Fingerroot EO inhibited all strains at ≤0.4%. In the enumeration-over-time assay, a 5% fingerroot ethanol extract reduced ca. 4 log CFU/ml Listeria by around 2 log in 24 h while 10% inactivated the microorganism in 9 h. Fingerroot EO at 0.2% inactivated 4 log CFU/ml L. monocytogenes in 6 to 9 h. Neither extracts nor commercial EO had any effect on Salmonella Typhimurium DT 104 with the exception of fingerroot EO, which inhibited all strains at ≤0.7%. Addition of 0.2% fingerroot EO to apple juice reduced 4 log of L. monocytogenes Scott A and both strains of Salmonella Typhimurium to an undetectable level within 1 to 2 days. It was concluded that fingerroot EO and extract have potential for inhibiting pathogens in food systems.

Inhibition ofListeria monocytogenesby a combination of chitosan and divergicin M35

2009 ◽  
Vol 55 (4) ◽  
pp. 347-355 ◽  
Author(s):  
R. Benabbou ◽  
A. Zihler ◽  
M. Desbiens ◽  
E. Kheadr ◽  
M. Subirade ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Cell Surface ◽  
Inhibitory Concentration ◽  
Antimicrobial Activities ◽  
Viable Count ◽  
Cell Permeability ◽  
Fractional Inhibitory Concentration ◽  
Chitosan Films

The antimicrobial activities of the class IIa bacteriocin divergicin M35 and several types of chitosan against Listeria monocytogenes were quantified by agar diffusion, critical micro-dilution, and viable count and observed by electron microscopy. Antimicrobial activity of chitosan depended on its molecular mass (MM) and the pH. Three chitosans with MM values of 2, 20, and 100 kDa and 87.4% degree of deacetylation (DDA) were chosen for further study, based on high anti-listerial activity at pH 4.5. Electron microscopy suggested that the mechanism of anti-listerial activity also varied with the MM. Low-MM chitosan appeared to inhibit L. monocytogenes by affecting cell permeability and growth, whereas medium- and high-MM chitosan may form a barrier on the cell surface that prevents entry of nutrients. The minimum inhibitory concentrations (MICs) of 2, 20, and 100 kDa chitosan and divergicin M35 against a divergicin-resistant strain of L. monocytogenes (LSD 535) were 2.5, 2.5, 0.625, and 0.25 mg/mL, respectively. The combination of any of these 3 chitosans and divergicin M35 appeared to have an additive effect against L. monocytogenes, as determined by fractional inhibitory concentration (FIC) index. This study provides useful data for the development of chitosan films incorporating divergicin M35 for inhibiting L. monocytogenes in foods.

scholarly journals Antimicrobial activity of essential oils against Listeria monocytogenes

2018 ◽  
Vol 45 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Ružica Tomičić ◽  
Ivana Čabarkapa ◽  
Ana Varga ◽  
Zorica Tomičić
Keyword(s):  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oils

Antimicrobial Activity of Vanillin and Mixtures with Cinnamon and Clove Essential Oils in Controlling Listeria monocytogenes and Escherichia coli O157:H7 in Milk

2010 ◽  
Vol 5 (6) ◽  
pp. 2120-2131 ◽  
Author(s):  
Rita María Cava-Roda ◽  
Amaury Taboada-Rodríguez ◽  
María Teresa Valverde-Franco ◽  
Fulgencio Marín-Iniesta
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oils ◽  
Escherichia Coli O157

Flow cytometric assessment of the antimicrobial activity of essential oils against Listeria monocytogenes

Food Control ◽  
2008 ◽  
Vol 19 (12) ◽  
pp. 1174-1182 ◽  
Author(s):  
Antonello Paparella ◽  
Lorenzo Taccogna ◽  
Irene Aguzzi ◽  
Clemencia Chaves-López ◽  
Annalisa Serio ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oils ◽  
Flow Cytometric

Antimicrobial activity of essential oils and natural plant extracts against Listeria monocytogenes in a dry‐cured ham‐based model

2021 ◽  
Author(s):  
Luciana Ruschel Santos ◽  
Alberto Alía ◽  
Irene Martin ◽  
Franciele Maria Gottardo ◽  
Laura Beatriz Rodrigues ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oils ◽  
Plant Extracts ◽  
Natural Plant ◽  
Dry Cured Ham

Antimicrobial activity of three essential oils (cinnamon, manuka, and winter savory), and their synergic interaction, against Listeria monocytogenes

2019 ◽  
Vol 34 (5) ◽  
pp. 339-348 ◽  
Author(s):  
Filippo Fratini ◽  
Simone Mancini ◽  
Barbara Turchi ◽  
Daniele Sparagni ◽  
Alaa Abd Al‐Gwad ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oils

scholarly journals Evaluation of the antibacterial activity of bergamot essential oils on different Listeria monocytogenes strains

2016 ◽  
Vol 5 (4) ◽  
Author(s):  
Stefania M. Marotta ◽  
Filippo Giarratana ◽  
Alessio Parco ◽  
Domenico Neri ◽  
Graziella Ziino ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oils ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Disc Diffusion Method ◽  
Strong Activity ◽  
Agar Disc ◽  
Inhibition Experiment

Essential oils are aromatic and volatile substances extracted from plants and characterized by antimicrobial activity. The aim of the present study was to evaluate the antibacterial activity (agar disc-diffusion method) of seven different bergamot essential oils (BEOs) on eight <em>Listeria monocytogenes</em> strains. Minimal inhibitory concentration (MIC) of most efficient BEOs was estimated. Extremely variable results for agar disc-diffusion method for <em>L. monocytogenes</em> strains were reported. One of the tested microorganisms resulted insensible to all the BEOs; 3 strains showed an inhibition from weak to null and the remaining 4 a variable susceptibility. Among the BEOs tested, one showed a strong activity against four pathogenic strains. Four BEOs revealed weak, moderate or null activity in all the 7 sensitive strains, while for two oils only a weak or no activity was reported. MIC values were 0.625 μL/mL for the most efficient BEO, 2.5 and 5 μL/mL for the other samples that showed moderate inhibition. Experiment results are significantly related to the strains tested (P&lt;0.01), rather than the BEO employed (P&gt;0.01). In conclusion, we can consider BEO as a natural technological hurdle for <em>Listeria monocytogenes</em> in combination with other preservation strategies. Finally, this study underlines the necessity to evaluate the antimicrobial activity of EOs on a significant strains number of the same bacteria.

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