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Bielik B, Molnár L, Vrabec V, Andrášiová R, Maruščáková IC, Nemcová R, Toporčák J, Mudroňová D. Biofilm-forming lactic acid bacteria of honey bee origin intended for potential probiotic use. Acta Vet Hung 2021; 68:345-353. [PMID: 33496680 DOI: 10.1556/004.2020.00057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/14/2020] [Indexed: 01/09/2023]
Abstract
Scientists around the world are focusing their interest on the use of probiotics in honey bees as an alternative method of prophylaxis against causative agents of both American and European foulbrood. In our study we tested inhibitory activity against Paenibacillus larvae and the biofilm formation activity by various lactic acid bacteria isolated from honey bee guts or fresh pollen samples in the presence of different sugars added to the cultivation media. In addition, we tested the probiotic effect of a newly selected Apilactobacillus kunkeei V18 in an in situ experiment in bee colonies. We found antibacterial activity against P. larvae in four isolates. Biofilm formation activity of varying intensity was noted in six of the seven isolates in the presence of different sugars. The strongest biofilm formation (OD570 ≥ 1) was noted in A. kunkeei V18 in the presence of fructose; moreover, this isolate strongly inhibited the growth of P. larvae under laboratory conditions. Inhibition of P. larvae and Melissococcus plutonius by A. kunkeei V18 in situ was confirmed in a pilot study.
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Affiliation(s)
- Bohumil Bielik
- 1Clinic of Birds, Exotic and Free Living Animals, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Ladislav Molnár
- 1Clinic of Birds, Exotic and Free Living Animals, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Vladimír Vrabec
- 1Clinic of Birds, Exotic and Free Living Animals, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Romana Andrášiová
- 2Department of Epizootiology and Parasitology, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Ivana Cingel'ová Maruščáková
- 3Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81, Košice, Slovak Republic
| | - Radomíra Nemcová
- 3Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81, Košice, Slovak Republic
| | - Juraj Toporčák
- 1Clinic of Birds, Exotic and Free Living Animals, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Dagmar Mudroňová
- 3Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81, Košice, Slovak Republic
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Alonso VPP, Harada AMM, Kabuki DY. Competitive and/or Cooperative Interactions of Listeria monocytogenes With Bacillus cereus in Dual-Species Biofilm Formation. Front Microbiol 2020; 11:177. [PMID: 32184763 PMCID: PMC7058548 DOI: 10.3389/fmicb.2020.00177] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/24/2020] [Indexed: 12/12/2022] Open
Abstract
Microorganisms in dairy industries can form monospecies, dual-species, or multispecies biofilms, showing cooperative or competitive behaviors, which might contribute to the reduction of efficiency of cleaning and sanitization processes and eventually turn into a potential source of contamination. This study proposes to evaluate the behavior of Listeria monocytogenes in monospecies biofilms, cocultured with Bacillus cereus. The isolates were of dairy origin, and the selection occurred after studies of competition among species. The biofilm formations on AISI 304 stainless steel at 25°C in a stationary culture were analyzed to observe the cooperative or competitive interactions among species, as well as the effect of pre-adhered cells. Biofilm formation assays were performed in four experiments: Experiment 1: in the presence of strains of antagonistic substance producer B. cereus (+); Experiment 2: extract of the antagonistic substance of B. cereus; Experiment 3: pre-adhered cells of B. cereus; and Experiment 4: pre-adhered cells of L. monocytogenes. Subsequently, cooperative behavior was observed by scanning electron microscopy. The L. monocytogenes monospecies biofilm counts of greater than 5 log colony-forming units (CFU)/cm2 were also observed in dual-species biofilms in the presence of B. cereus (non-producers of antagonist substance), showing cooperative behavior between species. However, in the presence of antagonistic substance produced by B. cereus, the counts were lower, 1.39 and 1.70 log CFU/cm2 (p > 0.05), indicating that the antagonistic substance contributes to competitive interactions. These data are relevant for the development of new studies to control L. monocytogenes in the dairy industry.
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Affiliation(s)
| | | | - Dirce Yorika Kabuki
- Department of Food Science, Faculty of Food Engineering, University of Campinas, Campinas, Brazil
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3
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Lactobacillus strains inhibit biofilm formation of Salmonella sp. isolates from poultry. Food Res Int 2019; 123:258-265. [DOI: 10.1016/j.foodres.2019.04.067] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 04/27/2019] [Accepted: 04/29/2019] [Indexed: 01/20/2023]
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Santos T, Viala D, Chambon C, Esbelin J, Hébraud M. Listeria monocytogenes Biofilm Adaptation to Different Temperatures Seen Through Shotgun Proteomics. Front Nutr 2019; 6:89. [PMID: 31259174 PMCID: PMC6587611 DOI: 10.3389/fnut.2019.00089] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 05/24/2019] [Indexed: 12/16/2022] Open
Abstract
Listeria monocytogenes is a foodborne pathogen that can cause invasive severe human illness (listeriosis) in susceptible patients. Most human listeriosis cases appear to be caused by consumption of refrigerated ready-to-eat foods. Although initial contamination levels in foods are usually low, the ability of these bacteria to survive and multiply at low temperatures allows it to reach levels high enough to cause disease. This study explores the set of proteins that might have an association with L. monocytogenes adaptation to different temperatures. Cultures were grown in biofilm, the most widespread mode of growth in natural and industrial realms. Protein extractions were performed from three different growth temperatures (10, 25, and 37°C) and two growth phases (early stage and mature biofilm). L. monocytogenes subproteomes were targeted using three extraction methods: trypsin-enzymatic shaving, biotin-labeling and cell fractionation. The different subproteomes obtained were separated and analyzed by shotgun proteomics using high-performance liquid chromatography combined with tandem mass spectrometry (LC-OrbiTrap LTQVelos, ThermoFisher Scientific). A total of 141 (biotinylation), 98 (shaving) and 910 (fractionation) proteins were identified. Throughout the 920 unique proteins identified, many are connected to basic cell functions, but some are linked with thermoregulation. We observed some noteworthy protein abundance shifts associated with the major adaptation to cold mechanisms present in L. monocytogenes, namely: the role of ribosomes and the stressosome with a higher abundance of the general stress protein Ctc (Rl25) and the general stress transcription factor sigma B (σB), changes in cell fluidity and motility seen by higher levels of foldase protein PrsA2 and flagellin (FlaA), the uptake of osmolytes with a higher abundance of glycine betaine (GbuB) and carnitine transporters (OpucA), and the relevance of the overexpression of chaperone proteins such as cold shock proteins (CspLA and Dps). As for 37°C, we observed a significantly higher percentage of proteins associated with transcriptional or translational activity present in higher abundance upon comparison with the colder settings. These contrasts of protein expression throughout several conditions will enrich databases and help to model the regulatory circuitry that drives adaptation of L. monocytogenes to environments.
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Affiliation(s)
- Tiago Santos
- Université Clermont Auvergne, INRA, UMR Microbiologie Environnement Digestif Santé (MEDiS), Saint-Genès-Champanelle, France
| | - Didier Viala
- INRA, Plateforme d'Exploration du Métabolisme, Composante Protéomique (PFEMcp), Saint-Genès-Champanelle, France
| | - Christophe Chambon
- INRA, Plateforme d'Exploration du Métabolisme, Composante Protéomique (PFEMcp), Saint-Genès-Champanelle, France
| | - Julia Esbelin
- Université Clermont Auvergne, INRA, UMR Microbiologie Environnement Digestif Santé (MEDiS), Saint-Genès-Champanelle, France
| | - Michel Hébraud
- Université Clermont Auvergne, INRA, UMR Microbiologie Environnement Digestif Santé (MEDiS), Saint-Genès-Champanelle, France
- INRA, Plateforme d'Exploration du Métabolisme, Composante Protéomique (PFEMcp), Saint-Genès-Champanelle, France
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Haddaji N, Mahdhi AK, Ismaiil MB, Bakhrouf A. Effect of environmental stress on cell surface and membrane fatty acids of Lactobacillus plantarum. Arch Microbiol 2017; 199:1243-1250. [DOI: 10.1007/s00203-017-1395-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 05/02/2017] [Accepted: 06/05/2017] [Indexed: 12/31/2022]
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Khangholi M, Jamalli A. The Effects of Sugars on the Biofilm Formation of Escherichia coli 185p on Stainless Steel and Polyethylene Terephthalate Surfaces in a Laboratory Model. Jundishapur J Microbiol 2016; 9:e40137. [PMID: 27800149 PMCID: PMC5086029 DOI: 10.5812/jjm.40137] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 08/13/2016] [Accepted: 08/21/2016] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Bacteria utilize various methods in order to live in protection from adverse environmental conditions. One such method involves biofilm formation; however, this formation is dependent on many factors. The type and concentration of substances such as sugars that are present in an environment can be effective facilitators of biofilm formation. METHODS First, the physico-chemical properties of the bacteria and the target surface were studied via the MATS and contact angle measurement methods. Additionally, adhesion to different surfaces in the presence of various concentrations of sugars was compared in order to evaluate the effect of these factors on the biofilm formation of Escherichia coli, which represents a major food contaminant. RESULTS Results showed that the presence of sugars has no effect on the bacterial growth rate; all three concentrations of sugars were hydrophilic and demonstrated a high affinity toward binding to the surfaces. CONCLUSIONS The impact of sugars and other factors on biofilm formation can vary depending on the type of bacteria present.
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Affiliation(s)
| | - Ailar Jamalli
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, IR Iran
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Haddaji N, Mahdhi AK, Krifi B, Ismail MB, Bakhrouf A. Change in cell surface properties of Lactobacillus casei under heat shock treatment. FEMS Microbiol Lett 2015; 362:fnv047. [PMID: 25825473 DOI: 10.1093/femsle/fnv047] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2015] [Indexed: 12/14/2022] Open
Abstract
We undertake this study in the aim to give new insight about the change in cellular physiological state under heat shock treatment and probiotic strain screening procedure. Different cell properties have been studied like adhesive ability to biotic and abiotic surfaces, the cell surface hydrophobicity and the fatty acids profiles. Compared to the normal cells, the heated cells increased their adhesive ability to biotic surface. However, the adhesion to abiotic surface was decreased. The cell surface hydrophobicity of the heated strains showed a significant decrease (P < 0.05). Our data revealed that high temperature change the fatty acids profiles of the treated cells, especially the proportions of unsaturated and saturated fatty acid. In fact, the ratio of saturated to unsaturated fatty acids of the heated Lactobacillus casei cells was significantly higher than that of the control cells (P < 0.05). The present finding could firstly add new insight about the response of probiotic to stressful conditions, such us the important role of cell membrane, considered as the first main structure to be damaged by physicochemical stress, in stress resistance because of their composition that can change in adaptation to harsh conditions. Secondly, there is no relationship between changes in membrane composition and fluidity induced by heat shock treatment and adhesion to biotic and abiotic surface.
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Affiliation(s)
- Najla Haddaji
- Laboratory of Analysis, Treatment and Valorization of the Pollutants of the Environment and Products, Faculty of Pharmacy, University of Monastir, Monastir Avicenne Street, Monastir 5000, Tunisia
| | - Abdel Karim Mahdhi
- Laboratory of Analysis, Treatment and Valorization of the Pollutants of the Environment and Products, Faculty of Pharmacy, University of Monastir, Monastir Avicenne Street, Monastir 5000, Tunisia
| | - Boubaker Krifi
- Laboratory of Analysis, Treatment and Valorization of the Pollutants of the Environment and Products, Faculty of Pharmacy, University of Monastir, Monastir Avicenne Street, Monastir 5000, Tunisia
| | - Manel Ben Ismail
- Laboratory of Biophysics, Faculty of Medicine, University of Monastir, Monastir Avicenne Street, Monastir 5000, Tunisia
| | - Amina Bakhrouf
- Laboratory of Analysis, Treatment and Valorization of the Pollutants of the Environment and Products, Faculty of Pharmacy, University of Monastir, Monastir Avicenne Street, Monastir 5000, Tunisia
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8
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Nguyen H, Yang Y, Yuk H. Biofilm formation of Salmonella Typhimurium on stainless steel and acrylic surfaces as affected by temperature and pH level. Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2013.09.022] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Influence of freezing stress on morphological alteration and biofilm formation by Listeria monocytogenes: relationship with cell surface hydrophobicity and membrane fluidity. Arch Microbiol 2013; 195:705-15. [DOI: 10.1007/s00203-013-0921-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 07/23/2013] [Accepted: 08/17/2013] [Indexed: 12/25/2022]
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10
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Kasimanickam RK, Ranjan A, Asokan GV, Kasimanickam VR, Kastelic JP. Prevention and treatment of biofilms by hybrid- and nanotechnologies. Int J Nanomedicine 2013; 8:2809-19. [PMID: 23946652 PMCID: PMC3739460 DOI: 10.2147/ijn.s44100] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Bacteria growing as adherent biofilms are difficult to treat and frequently develop resistance to antimicrobial agents. To counter biofilms, various approaches, including prevention of bacterial surface adherence, application of device applicators, and assimilation of antimicrobials in targeted drug delivery machinery, have been utilized. These methods are also combined to achieve synergistic bacterial killing. This review discusses various multimodal technologies, presents general concepts, and describes therapies relying on the principles of electrical energy, ultrasound, photodynamics, and targeted drug delivery for prevention and treatment of biofilms.
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Affiliation(s)
- Ramanathan K Kasimanickam
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA.
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11
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Biofilm formation of meat-borne Salmonella enterica and inhibition by the cell-free supernatant from Pseudomonas aeruginosa. Food Control 2013. [DOI: 10.1016/j.foodcont.2013.01.047] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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12
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Influence of flow direction and flow rate on the initial adhesion of seven Listeria monocytogenes strains to fine polished stainless steel. Int J Food Microbiol 2012; 157:174-81. [DOI: 10.1016/j.ijfoodmicro.2012.04.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 03/29/2012] [Accepted: 04/27/2012] [Indexed: 11/21/2022]
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13
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Variability in biofilm production by Listeria monocytogenes correlated to strain origin and growth conditions. Int J Food Microbiol 2011; 150:14-24. [PMID: 21824672 DOI: 10.1016/j.ijfoodmicro.2011.07.012] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 04/18/2011] [Accepted: 07/04/2011] [Indexed: 11/20/2022]
Abstract
This study aimed to identify factors that influence the development of biofilm by Listeria monocytogenes strains and to determine the extent to which biofilm production protects against quaternary ammonium compound (QAC) disinfectant challenge. A total of 95 L. monocytogenes strains were studied and biofilm production was assessed as a function of incubation temperature, media pH, strain origin, serotype, and environmental persistence status. Attachment and biofilm development (inferred by the level of attached biomass) were measured in vitro using a colourimetric 96-well microtitre plate method in nutritive media (Brain-Heart Infusion). Increased biofilm production correlated with increasing temperature and the most acidic, or most alkaline, growth conditions tested. Clinical and environmental (food factory) strains were observed to increase biofilm production at higher and lower incubation temperatures respectively, independent of their rate of planktonic growth. Serotype 1/2a strains produced significantly more biofilm. Biofilm maturity, rather than strain, was correlated with resistance to QAC. Carbohydrate containing exopolymeric material could not be detected in the biofilm of representative strains, and no correlation between strains recovered as persistent food factory contaminants and biofilm production was identified. Although limited to in vitro inference based on the assay system used, our results suggest that environmental conditions determine the level of biofilm production by L. monocytogenes strains, independent of the rate of planktonic growth, and that this may manifest from selection pressures to which a given strain grows optimally.
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14
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Mafu AA, Plumety C, Deschênes L, Goulet J. Adhesion of Pathogenic Bacteria to Food Contact Surfaces: Influence of pH of Culture. Int J Microbiol 2010; 2011:972494. [PMID: 20981289 PMCID: PMC2963129 DOI: 10.1155/2011/972494] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Revised: 09/01/2010] [Accepted: 09/15/2010] [Indexed: 11/17/2022] Open
Abstract
The adhesion of Aeromonas hydrophila, Escherichia coli O157:H7, Salmonella Enteritidis, and Staphylococcus aureus to hydrophobic and hydrophilic surfaces in cultures with different pHs (6, 7, and 8) was studied. The results indicated that the type of material had no effect on the attachment capacity of microorganisms, while environmental pH influenced the adhesion of A. hydrophila, E. coli, and S. aureus to both solid substrates. The attachment of S. Enteritidis (P > .05) was not affected by the type of substrate or the culture pH, whereas E. coli displayed the weakest affinity for both polystyrene and glass surfaces. No correlation was established between the physicochemical properties of the materials, or the bacterial and the rate of bacterial adhesion, except for S. aureus. Photomicrographs have shown that surfaces were contaminated by small clusters of S. Enteritidis while S. aureus invaded the food contact surfaces in the form of small chains or cell aggregates.
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Affiliation(s)
- Akier Assanta Mafu
- Food Research and Development Centre, Agri-Food and Agriculture Canada, 3600 Casavant Boulevard-West, St-Hyacinthe, QC, Canada J2S 1A2
- Department of Science and Nutrition, Laval University, Quebec, QC, Canada G1K 7P4
| | - Corinne Plumety
- Food Research and Development Centre, Agri-Food and Agriculture Canada, 3600 Casavant Boulevard-West, St-Hyacinthe, QC, Canada J2S 1A2
| | - Louise Deschênes
- Food Research and Development Centre, Agri-Food and Agriculture Canada, 3600 Casavant Boulevard-West, St-Hyacinthe, QC, Canada J2S 1A2
| | - Jacques Goulet
- Department of Science and Nutrition, Laval University, Quebec, QC, Canada G1K 7P4
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ÖLMEZ H. EFFECT OF DIFFERENT SANITIZING METHODS AND INCUBATION TIME AND TEMPERATURE ON INACTIVATION OFESCHERICHIA COLION LETTUCE. J Food Saf 2010. [DOI: 10.1111/j.1745-4565.2009.00206.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Mastronicolis SK, Berberi A, Diakogiannis I, Petrova E, Kiaki I, Baltzi T, Xenikakis P. Alteration of the phospho- or neutral lipid content and fatty acid composition in Listeria monocytogenes due to acid adaptation mechanisms for hydrochloric, acetic and lactic acids at pH 5.5 or benzoic acid at neutral pH. Antonie van Leeuwenhoek 2010; 98:307-16. [PMID: 20379849 PMCID: PMC2935972 DOI: 10.1007/s10482-010-9439-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Accepted: 03/29/2010] [Indexed: 10/30/2022]
Abstract
This study provides a first approach to observe the effects on Listeria monocytogenes of cellular exposure to acid stress at low or neutral pH, notably how phospho- or neutral lipids are involved in this mechanism, besides the fatty acid profile alteration. A thorough investigation of the composition of polar and neutral lipids from L. monocytogenes grown at pH 5.5 in presence of hydrochloric, acetic and lactic acids, or at neutral pH 7.3 in presence of benzoic acid, is described relative to cells grown in acid-free medium. The results showed that only low pH values enhance the antimicrobial activity of an acid. We suggest that, irrespective of pH, the acid adaptation response will lead to a similar alteration in fatty acid composition [decreasing the ratio of branched chain/saturated straight fatty acids of total lipids], mainly originating from the neutral lipid class of adapted cultures. Acid adaptation in L. monocytogenes was correlated with a decrease in total lipid phosphorus and, with the exception of cells adapted to benzoic acid, this change in the amount of phosphorus reflected a higher content of the neutral lipid class. Upon acetic or benzoic acid stress the lipid phosphorus proportion was analysed in the main phospholipids present: cardiolipin, phosphatidylglycerol, phosphoaminolipid and phosphatidylinositol. Interestingly only benzoic acid had a dramatic effect on the relative quantities of these four phospholipids.
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Affiliation(s)
- Sofia K Mastronicolis
- Food Chemistry Laboratory, Department of Chemistry, University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece.
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17
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Chemaly M, Toquin MT, Le Nôtre Y, Fravalo P. Prevalence of Listeria monocytogenes in poultry production in France. J Food Prot 2008; 71:1996-2000. [PMID: 18939743 DOI: 10.4315/0362-028x-71.10.1996] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study aimed to update and create a data set from laying hens and broilers regarding contamination by Listeria monocytogenes. Two hundred laying-hen flocks were sampled, with 88 flocks reared in cages and 112 reared on the floor. One hundred forty-five broiler flocks were sampled, with 85 conventional and 60 free-range flocks. A total of 774 and 725 samples were analyzed from laying hens and broilers, respectively. L. monocytogenes was detected in 31 of 200 flocks, yielding an estimated prevalence of 15.5% in laying-hen flocks. Among positive flocks, there appeared a significant (P = 0.004) difference between caged and floor-reared hens, with a higher detection in dust samples from floor-reared hens. In positive caged hen flocks, significant (P = 0.028) differences between dust and fecal samples appeared, with a higher detection in feces than in dust samples. In broiler flocks, L. monocytogenes was isolated in 46 of 145 flocks, yielding an estimated prevalence of 32% (28% in conventional flocks versus 37% in the free-range flocks). L. monocytogenes was isolated in samples taken from conventional flocks with a lower frequency than in free-range flocks (13 versus 18%, respectively). The serotyping of L. monocytogenes strains showed that the majority belonged to type 1/2a in laying-hen flocks (74.3%) and in broiler flocks (40.5%). A significant difference (P = 0.007) between laying hens and broilers was shown for serogroup 4 and for serovar 1/2b (P = 0.007); these serogroups were more prevalent in broilers (40%) than in laying hens (5.7%).
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Affiliation(s)
- Marianne Chemaly
- Laboratoire d'Etude de Recherche Avicole et Porcine, Unité Hygiène et Qualité des Produits Avicole et Porcin, BP 53-22440 Ploufragan, France.
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18
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Di Bonaventura G, Piccolomini R, Paludi D, D’Orio V, Vergara A, Conter M, Ianieri A. Influence of temperature on biofilm formation by Listeria monocytogenes on various food-contact surfaces: relationship with motility and cell surface hydrophobicity. J Appl Microbiol 2008; 104:1552-61. [DOI: 10.1111/j.1365-2672.2007.03688.x] [Citation(s) in RCA: 284] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Palmer J, Flint S, Brooks J. Bacterial cell attachment, the beginning of a biofilm. J Ind Microbiol Biotechnol 2007; 34:577-88. [PMID: 17619090 DOI: 10.1007/s10295-007-0234-4] [Citation(s) in RCA: 359] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Accepted: 06/07/2007] [Indexed: 10/23/2022]
Abstract
The ability of bacteria to attach to surfaces and develop into a biofilm has been of considerable interest to many groups in numerous industries, including the medical and food industry. However, little is understood in the critical initial step seen in all biofilm development, the initial bacterial cell attachment to a surface. This initial attachment is critical for the formation of a bacterial biofilm, as all other cells within a biofilm structure rely on the interaction between surface and bacterial cell for their survival. This review examines what are believed to be some of the most important aspects involved in bacterial attachment to a surface.
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Affiliation(s)
- Jon Palmer
- Institute of Food Nutrition and Human Health, Massey University, Palmerston North, New Zealand.
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20
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Meylheuc T, Methivier C, Renault M, Herry JM, Pradier CM, Bellon-Fontaine MN. Adsorption on stainless steel surfaces of biosurfactants produced by gram-negative and gram-positive bacteria: Consequence on the bioadhesive behavior of Listeria monocytogenes. Colloids Surf B Biointerfaces 2006; 52:128-37. [PMID: 16781848 DOI: 10.1016/j.colsurfb.2006.04.016] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2006] [Accepted: 04/27/2006] [Indexed: 11/23/2022]
Abstract
The ability of adsorbed biosurfactants (Pf and Lb) obtained from gram-negative bacterium (Pseudomonas fluorescens) or gram-positive bacterium (Lactobacillus helveticus) to inhibit adhesion of four listerial strains to stainless steel was investigated. These metallic surfaces were characterized using the following complementary analytical techniques: contact-angle measurements (CAM), atomic force microscopy (AFM), polarization modulation-infrared reflection-adsorption spectroscopy (PM-IRRAS) and X-ray photoelectron spectroscopy (XPS). Contact-angles with polar liquids (water and formamide) indicated that the stainless steel surface covered with adsorbed biosurfactant was more hydrophilic and electron-donating than bare stainless steel. The surface characterization by XPS and PM-IRRAS revealed that conditioning the stainless steel changes the substrate in two ways, by modifying the surface alloy composition and by leaving an thin adsorbed organic layer. AFM observations enabled to say that the layer covered entirely the surface and was probably thicker (with patches) in the case of Pf-conditioned surfaces compared to the Lb-conditioned ones, which seemed to be less homogeneous. Though the added layer was thin, significant chemical changes were observed that can account for drastic modifications in the surface adhesive properties. As a matter of fact, adhesion tests showed that both used biosurfactants were effective by decreasing strongly the level of contamination of stainless steel surfaces by the four strains of Listeria monocytogenes. The more important decrease concerned the CIP104794 and CIP103573 strains (>99.7%) on surface conditioned by L. helveticus biosurfactant. A less reduced phenomenon (75.2%) for the CIP103574 strain on stainless steel with absorbed biosurfactant from P. fluorescens was observed. Whatever the strain of L. monocytogenes and the biosurfactant used, this antiadhesive biologic coating reduced both total adhering flora and viable and cultivable adherent bacteria on stainless steel surfaces. This study confirms that biosurfactants constitute an effective strategy to prevent microbial colonization of metallic surfaces by pathogenic bacteria like the food-borne pathogen L. monocytogenes.
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Affiliation(s)
- Thierry Meylheuc
- Unité de Recherche en Bioadhésion et Hygiène des Matériaux, Institut National de la Recherche Agronomique 25, Avenue de la République, F-91744 Massy Cedex, France.
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Chae MS, Schraft H, Truelstrup Hansen L, Mackereth R. Effects of physicochemical surface characteristics of Listeria monocytogenes strains on attachment to glass. Food Microbiol 2005; 23:250-9. [PMID: 16943011 DOI: 10.1016/j.fm.2005.04.004] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2004] [Revised: 04/08/2005] [Accepted: 04/08/2005] [Indexed: 10/25/2022]
Abstract
Seven strains of Listeria monocytogenes frequently involved in foodborne disease (epidemic strains) and 14 sporadic strains were examined to compare the attachment and subsequent biofilm growth on glass slides at 37 degrees C. Epidemic strains at 3 h incubation had significantly higher attachment values than sporadic strains (P<0.001), but subsequent biofilm growth over 24 h was not dependent on initial attachment. To better understand this phenomenon, the surface hydrophobicity and charge, as well as the extracellular carbohydrate content of the 21 L. monocytogenes strains were studied to determine if these surface characteristics had an effect on bacterial attachment to glass. Hydrophobicity was measured by the bacterial adherence to hydrocarbon (BATH) and polystyrene adherence methods. Hydrophobicity values obtained with the BATH method were linearly correlated with those from the polystyrene adherence method (r=0.64, P<0.001), but no correlation was found between hydrophobicity and bacterial attachment to glass. Hydrophobicity and surface charge measured as electrophoretic mobility (EM) were correlated (r=0.77, P<0.001); however, there was no correlation between the degree of attachment and surface charge. Colorimetric measurements of the total extracellular carbohydrates revealed that attached cells produced significantly (P<0.05) higher levels than planktonic cells after a 3 h time period. Analysis of co-variance (Nested ANCOVA) furthermore demonstrated that total carbohydrates produced by planktonic cells had a significant positive effect on 24 h biofilm growth (P=0.006). This is the first report to indicate that the ability of a L. monocytogenes strain to produce high levels of extracellular carbohydrates may increase its ability to form a biofilm. Genetic studies targeting carbohydrate synthesis pathways of L. monocytogenes will be required to fully understand the importance of this observation.
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Affiliation(s)
- Min Seok Chae
- Department of Food Science, University of Guelph, Guelph, ON, Canada N1G 2W1
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Bereksi N, Gavini F, Bénézech T, Faille C. Growth, morphology and surface properties of Listeria monocytogenes Scott A and LO28 under saline and acid environments. J Appl Microbiol 2002; 92:556-65. [PMID: 11872133 DOI: 10.1046/j.1365-2672.2002.01564.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS The effect of salt and acid on the growth and surface properties of two strains of Listeria monocytogenes was investigated. METHODS AND RESULTS Medium acidification and NaCl supplementation induced a marked increase in the lag and growth times (up to fivefold higher) and a decrease in the maximal optical density. Due to a strong synergic effect of pH and NaCl, growth was only detected after 280 h incubation for Scott A and not detected after 600 h for LO28 at pH 5.0 and 10% NaCl. Furthermore, the addition of NaCl in acidic conditions gave rise to cell filamentation and cell surfaces became strongly hydrophilic. CONCLUSIONS Some L. monocytogenes strains subjected to high NaCl concentrations in acidic conditions are able to grow but may present altered adhesion properties due to modification of their surface properties. SIGNIFICANCE AND IMPACT OF THE STUDY This study highlighted that L. monocytogenes do represent a hazard in acid and salted foods, such as soft cheese.
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Affiliation(s)
- N Bereksi
- Institut National de la Recherche Agronomique, Laboratoire de Génie des Procédés et Technologie Alimentaires, 369 Rue Jules Guesde, BP 39, F-59651 Villeneuve d'Ascq Cedex, France
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Gallardo-Moreno AM, González-Martín ML, Pérez-Giraldo C, Garduño E, Bruque JM, Gómez-García AC. Thermodynamic analysis of growth temperature dependence in the adhesion of Candida parapsilosis to polystyrene. Appl Environ Microbiol 2002; 68:2610-3. [PMID: 11976145 PMCID: PMC127537 DOI: 10.1128/aem.68.5.2610-2613.2002] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The purpose of this work was to study the adhesion to polystyrene of two Candida parapsilosis strains, grown at 22 and 37 degrees C, in terms of hydrophobicity, surface charge, and interaction free energy. Growth temperature changed the surface properties of microorganisms, yielding a good correlation between thermodynamic predictions and adhesion behavior.
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Meylheuc T, Giovannacci I, Briandet R, Bellon-Fontaine MN. Comparison of the cell surface properties and growth characteristics of Listeria monocytogenes and Listeria innocua. J Food Prot 2002; 65:786-93. [PMID: 12030289 DOI: 10.4315/0362-028x-65.5.786] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Growth kinetics and physicochemical surface properties were compared for three Listeria strains with differing degrees of virulence: L. monocytogenes LO28; its isogenic, nonhemolytic mutant L. monocytogenes Bof415; and a nonvirulent species, L. innocua (strain Lin9). The influences of growth stage (mid-exponential phase, early stationary phase, and mid-stationary phase) and culture temperature (20 and 37 degrees C) were assessed by determining the electrical properties and the hydrophobic-hydrophilic and Lewis acid-base characteristics of the three strains. L. innocua, although taxonomically very similar to L. monocytogenes, exhibited physicochemical surface properties that differed significantly from those of L. monocytogenes LO28 and L. monocytogenes Bof415. Indeed, under our experimental conditions, L. innocua cells presented a more marked electronegative character (particularly when cultured at 20 degrees C), as well as greater variability in their Lewis acid-base characteristics as a function of temperature and growth stage. Furthermore, the growth kinetics of the three strains revealed the onset of a decay phase after 16 h of culture at 37 degrees C for the L monocytogenes Bof415 mutant. All of these results demonstrate that under our experimental conditions, the growth and/or physicochemical characteristics of the slightly pathogenic or nonpathogenic Listeria strains (Bof415 and Lin9) differed from those of the virulent strain (L. monocytogenes LO28). Consequently, the use of Listeria strains recognized as nonvirulent appeared to provide a model that was not fully suitable for simulating the bioadhesive behavior of the pathogenic strains involved in foodborne diseases.
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Affiliation(s)
- Thierry Meylheuc
- Unité de Recherche en Bioadhésion et Hygiène des Matériaux, Institut National de la Recherche Agronomique, Massy, France.
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Chavant P, Martinie B, Meylheuc T, Bellon-Fontaine MN, Hebraud M. Listeria monocytogenes LO28: surface physicochemical properties and ability to form biofilms at different temperatures and growth phases. Appl Environ Microbiol 2002; 68:728-37. [PMID: 11823213 PMCID: PMC126664 DOI: 10.1128/aem.68.2.728-737.2002] [Citation(s) in RCA: 236] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2001] [Accepted: 10/31/2001] [Indexed: 11/20/2022] Open
Abstract
The surface physicochemical properties of Listeria monocytogenes LO28 under different conditions (temperature and growth phase) were determined by use of microelectrophoresis and microbial adhesion to solvents. The effect of these parameters on adhesion and biofilm formation by L. monocytogenes LO28 on hydrophilic (stainless steel) and hydrophobic (polytetrafluoroethylene [PTFE]) surfaces was assessed. The bacterial cells were always negatively charged and possessed hydrophilic surface properties, which were negatively correlated with growth temperature. The colonization of the two surfaces, monitored by scanning electron microscopy, epifluorescence microscopy, and cell enumeration, showed that the strain had a great capacity to colonize both surfaces whatever the incubation temperature. However, biofilm formation was faster on the hydrophilic substratum. After 5 days at 37 or 20 degrees C, the biofilm structure was composed of aggregates with a three-dimensional shape, but significant detachment took place on PTFE at 37 degrees C. At 8 degrees C, only a bacterial monolayer was visible on stainless steel, while no growth was observed on PTFE. The growth phase of bacteria used to inoculate surfaces had a significant effect only in some cases during the first steps of biofilm formation. The surface physicochemical properties of the strain are correlated with adhesion and surface colonization.
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Affiliation(s)
- Patrick Chavant
- Station de Recherches sur la Viande-Microbiologie, Institut National de la Recherche Agronomique de Theix, 63122 Saint-Genès Champanelle, France
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Meylheuc T, van Oss CJ, Bellon-Fontaine MN. Adsorption of biosurfactant on solid surfaces and consequences regarding the bioadhesion of Listeria monocytogenes LO28. J Appl Microbiol 2001; 91:822-32. [PMID: 11722659 DOI: 10.1046/j.1365-2672.2001.01455.x] [Citation(s) in RCA: 112] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS The influence of biosurfactant compounds produced by a strain of Pseudomonas fluorescens on the adhesion of Listeria monocytogenes LO28 to polytetrafluoroethylene (PTFE) and AISI 304 stainless steel surfaces was investigated. METHODS AND RESULTS The biosurfactant was produced according to a simple, novel technique based on cultivation on nutrient agar. Adhesion studies were performed using L. monocytogenes cells cultured at 20 or 37 degrees C. CONCLUSIONS A substrate-dependent behaviour of the LO28 strain (larger number of cells adhering to stainless steel than to PTFE), and a significant reduction (< 90%) in microbial adhesion levels through the prior adsorption of biosurfactants on stainless steel surfaces, which can be related to a change in the electron-donor characteristics of this substratum, was demonstrated. SIGNIFICANCE AND IMPACT OF THE STUDY The prior adsorption of biosurfactants on solid surfaces may constitute a new and effective means of combating the implantation of pathogenic micro-organisms in food processing plants.
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Affiliation(s)
- T Meylheuc
- Unité de Recherche en Bioadhésion et Hygiène des Matériaux, Institut National de la Recherche Agronomique, Massy, France.
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