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Prabhukhot GS, Eggleton CD, Vinyard B, Patel J. Using Bio-inline Reactor to Evaluate Sanitizer Efficacy in Removing Dual-species Biofilms Formed by Escherichia coli O157:H7 and Listeria monocytogenes. J Food Prot 2024; 87:100314. [PMID: 38876365 DOI: 10.1016/j.jfp.2024.100314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 06/05/2024] [Accepted: 06/06/2024] [Indexed: 06/16/2024]
Abstract
The efficacy of a sanitizer in biofilm removal may be influenced by a combination of factors such as sanitizer exposure time and concentration, bacterial species, surface topography, and shear stresses. We employed an inline biofilm reactor to investigate the interactions of these variables on biofilm removal with chlorine. The CDC bioreactor was used to grow E. coli O157:H7 and L. monocytogenes biofilms as a single species or with Ralstonia insidiosa as a dual-species biofilm on stainless steel, PTFE, and EPDM coupons at shear stresses 0.368 and 2.462 N/m2 for 48 hours. Coupons were retrieved from a CDC bioreactor and placed in an inline biofilm reactor and 100, 200, or 500 ppm of chlorine was supplied for 1- and 4 min. Bacterial populations in the biofilms were quantified pre- and posttreatment by plating on selective media. After chlorine treatment, reduction (Log CFU/cm2) in pathogen populations obtained from three replicates was analyzed for statistical significance. A 1-min chlorine treatment (500 ppm), on dual-species E. coli O157:H7 biofilms grown at high shear stress of 2.462 N/m2 resulted in significant E. coli O157:H7 reductions on SS 316L (2.79 log CFU/cm2) and PTFE (1.76 log CFU/cm2). Similar trend was also observed for biofilm removal after a 4-min chlorine treatment. Single species E. coli O157:H7 biofilms exhibited higher resistance to chlorine when biofilms were developed at high shear stress. The effect of chlorine in L. monocytogenes removal from dual-species biofilms was dependent primarily on the shear stress at which they were formed rather than the surface topography of materials. Besides surface topography, shear stresses at which biofilms were formed also influenced the effect of sanitizer. The removal of E. coli O157:H7 biofilms from EPDM material may require critical interventions due to difficulty in removing this pathogen. The inline biofilm reactor is a novel tool to evaluate the efficacy of a sanitizer in bacterial biofilm removal.
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Affiliation(s)
- Grishma S Prabhukhot
- Department of Mechanical Engineering, University of Maryland Baltimore County, Catonsville, MD, USA; US Department of Agriculture, Agricultural Research Service, Environmental and Microbial Food Safety Laboratory, Beltsville, MD, USA
| | - Charles D Eggleton
- Department of Mechanical Engineering, University of Maryland Baltimore County, Catonsville, MD, USA
| | - Bryan Vinyard
- US Department of Agriculture, Agricultural Research Service, Environmental and Microbial Food Safety Laboratory, Beltsville, MD, USA
| | - Jitendra Patel
- US Department of Agriculture, Agricultural Research Service, Environmental and Microbial Food Safety Laboratory, Beltsville, MD, USA.
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2
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Moreno Y, Moreno-Mesonero L, Soler P, Zornoza A, Soriano A. Influence of drinking water biofilm microbiome on water quality: Insights from a real-scale distribution system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:171086. [PMID: 38382601 DOI: 10.1016/j.scitotenv.2024.171086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/07/2024] [Accepted: 02/17/2024] [Indexed: 02/23/2024]
Abstract
Biofilms, constituting over 95 % of the biomass in drinking water distribution systems, form an ecosystem impacting both the aesthetic and microbiological quality of water. This study investigates the microbiome of biofilms within a real-scale drinking water distribution system in eastern Spain, utilizing amplicon-based metagenomics. Forty-one biofilm samples underwent processing and sequencing to analyze both bacterial and eukaryotic microbiomes, with an assessment of active biomass. Genus-level analysis revealed considerable heterogeneity, with Desulfovibrio, Ralstonia, Bradyrhizobium, Methylocystis, and Bacillus identified as predominant genera. Notably, bacteria associated with corrosion processes, including Desulfovibrio, Sulfuricella, Hyphomicrobium, and Methylobacterium, were prevalent. Potentially pathogenic bacteria such as Helicobacter, Pseudomonas, and Legionella were also detected. Among protozoa, Opisthokonta and Archaeplastida were the most abundant groups in biofilm samples, with potential pathogenic eukaryotes (Acanthamoeba, Naegleria, Blastocystis) identified. Interestingly, no direct correlation between microbiota composition and pipe materials was observed. The study suggests that the usual concentration of free chlorine in bulk water proved insufficient to prevent the presence of undesirable bacteria and protozoa in biofilms, which exhibited a high concentration of active biomass.
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Affiliation(s)
- Yolanda Moreno
- Research Institute of Water and Environmental Engineering (IIAMA), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain.
| | - Laura Moreno-Mesonero
- Research Institute of Water and Environmental Engineering (IIAMA), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - Patricia Soler
- Empresa Mixta Valenciana de Aguas, S.A. (EMIVASA), Av. del Regne de València, 28, 46005, Valencia, Spain
| | - Andrés Zornoza
- Research Institute of Water and Environmental Engineering (IIAMA), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain; H2OCITIES, SL, Arte Mayor de la Seda, 15, 46950 Xirivella, Valencia, Spain
| | - Adela Soriano
- Empresa Mixta Valenciana de Aguas, S.A. (EMIVASA), Av. del Regne de València, 28, 46005, Valencia, Spain
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Han M, Zhu T, Zhou Z, Si Q, Zhu C, Li Y, Jiang Q. Effects of different concentrations and particle sizes of nanoplastics on gut microbiology, metabolism, and immunity in Chiromantes dehaani. FISH & SHELLFISH IMMUNOLOGY 2024; 147:109461. [PMID: 38382689 DOI: 10.1016/j.fsi.2024.109461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/16/2024] [Accepted: 02/18/2024] [Indexed: 02/23/2024]
Abstract
This study investigated the effects of nanoplastics (NPs) of varying particle sizes (75, 500, and 1000 nm) and concentrations (2.5 and 10 mg/L) on the gut health of Chiromantes dehaani. The experimental groups included a control (Cg0), and varying combinations of particle size and concentration. Our results showed that 75 nm NPs were more likely to enhance pathogenic bacterial growth than other sized NPs. Compared with CK, Low NPs concentrations (2.5 mg/L) raised total cholesterol (T-CHO) levels in the gut, while high concentrations significantly decreased both triglyceride (TG) and T-CHO levels (p < 0.05). The enzymatic activities of intestinal lipase and amylase were inhibited by NPs exposure, with greater inhibition at higher NPs concentrations. The 500 nm NPs exhibited a notably higher inhibitory effect than the 75 and 1000 nm NPs (P < 0.05). In terms of apoptosis, NPs exposure led to reduced mRNA expression of Bcl2 and increased expression of Caspase-3, Caspase-8, and Caspase-9, indicating an induction of apoptosis. This effect was more pronounced at higher NPs concentrations, with 75 nm NPs more likely to induce apoptosis in intestinal cells than 500 nm and 1000 nm NPs. Moreover, NPs triggered intestinal inflammatory responses, evidenced by the increased mRNA expression of TNF-β, TNF-α, IL1β, IL6, and IL8, and the decreased expression of IL10. High NPs concentrations were more likely to induce intestinal inflammation, with 500 nm NPs imparting the strongest effect. In summary, the study demonstrated that NPs, and particularly those at higher concentrations, disrupted the gut environment of C. dehaani by altering the microflora, reducing microbial diversity, inhibiting digestion and metabolism, inducing apoptosis, and triggering inflammation. Among the sizes of NPs tested, 500 nm NPs had the most significant adverse impact on digestion, metabolism, and inflammation, while 75 nm NPs most strongly induced apoptosis in C. dehaani's intestinal cells.
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Affiliation(s)
- Mingming Han
- Centre for Marine and Coastal Studies, University Sains Malaysia, Minden, Penang, 11800, Malaysia
| | - Tian Zhu
- Centre for Marine and Coastal Studies, University Sains Malaysia, Minden, Penang, 11800, Malaysia
| | - Zihan Zhou
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing, 210017, China
| | - Qin Si
- Jiangsu Maritime Institute, 309 Gezhi Road, Nanjing, Jiangsu, 211100, China
| | - Chenxi Zhu
- Geography, School of Humanities, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia
| | - Yiming Li
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai, 200092, China.
| | - Qichen Jiang
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing, 210017, China.
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Vilas Boas D, Castro J, Araújo D, Nóbrega FL, Keevil CW, Azevedo NF, Vieira MJ, Almeida C. The Role of Flagellum and Flagellum-Based Motility on Salmonella Enteritidis and Escherichia coli Biofilm Formation. Microorganisms 2024; 12:232. [PMID: 38399635 PMCID: PMC10893291 DOI: 10.3390/microorganisms12020232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/25/2024] Open
Abstract
Flagellum-mediated motility has been suggested to contribute to virulence by allowing bacteria to colonize and spread to new surfaces. In Salmonella enterica and Escherichia coli species, mutants affected by their flagellar motility have shown a reduced ability to form biofilms. While it is known that some species might act as co-aggregation factors for bacterial adhesion, studies of food-related biofilms have been limited to single-species biofilms and short biofilm formation periods. To assess the contribution of flagella and flagellum-based motility to adhesion and biofilm formation, two Salmonella and E. coli mutants with different flagellar phenotypes were produced: the fliC mutants, which do not produce flagella, and the motAB mutants, which are non-motile. The ability of wild-type and mutant strains to form biofilms was compared, and their relative fitness was determined in two-species biofilms with other foodborne pathogens. Our results showed a defective and significant behavior of E. coli in initial surface colonization (p < 0.05), which delayed single-species biofilm formation. Salmonella mutants were not affected by the ability to form biofilm (p > 0.05). Regarding the effect of motility/flagellum absence on bacterial fitness, none of the mutant strains seems to have their relative fitness affected in the presence of a competing species. Although the absence of motility may eventually delay initial colonization, this study suggests that motility is not essential for biofilm formation and does not have a strong impact on bacteria's fitness when a competing species is present.
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Affiliation(s)
- Diana Vilas Boas
- Center of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (D.V.B.); (M.J.V.)
- LABBELS–Associate Laboratory, Braga/Guimarães, 4710-057 Braga, Portugal
| | - Joana Castro
- Center of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (D.V.B.); (M.J.V.)
- INIAV—National Institute for Agrarian and Veterinarian Research, Rua dos Lagidos, 4485-655 Vila do Conde, Portugal; (J.C.); (D.A.)
| | - Daniela Araújo
- Center of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (D.V.B.); (M.J.V.)
- INIAV—National Institute for Agrarian and Veterinarian Research, Rua dos Lagidos, 4485-655 Vila do Conde, Portugal; (J.C.); (D.A.)
| | - Franklin L. Nóbrega
- Center of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (D.V.B.); (M.J.V.)
- School of Biological Sciences, University of Southampton, University Road Southampton, Southampton SO17 1BJ, UK; (F.L.N.); (C.W.K.)
| | - Charles W. Keevil
- School of Biological Sciences, University of Southampton, University Road Southampton, Southampton SO17 1BJ, UK; (F.L.N.); (C.W.K.)
| | - Nuno F. Azevedo
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;
- AliCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Maria João Vieira
- Center of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (D.V.B.); (M.J.V.)
- LABBELS–Associate Laboratory, Braga/Guimarães, 4710-057 Braga, Portugal
| | - Carina Almeida
- Center of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (D.V.B.); (M.J.V.)
- INIAV—National Institute for Agrarian and Veterinarian Research, Rua dos Lagidos, 4485-655 Vila do Conde, Portugal; (J.C.); (D.A.)
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;
- AliCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
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Zuo X, Chen M, Zhang X, Guo A, Cheng S, Zhang R. Transcriptomic and metabolomic analyses to study the key role by which Ralstonia insidiosa induces Listeria monocytogenes to form suspended aggregates. Front Microbiol 2023; 14:1260909. [PMID: 37901811 PMCID: PMC10601645 DOI: 10.3389/fmicb.2023.1260909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 09/14/2023] [Indexed: 10/31/2023] Open
Abstract
Ralstonia insidiosa can survive in a wide range of aqueous environments, including food processing areas, and is harmful to humans. It can induce Listeria monocytogenes to form suspended aggregates, resulting from the co-aggregation of two bacteria, which allows for more persistent survival and increases the risk of L. monocytogenes contamination. In our study, different groups of aggregates were analyzed and compared using Illumina RNA sequencing technology. These included R. insidiosa under normal and barren nutrient conditions and in the presence or absence of L. monocytogenes as a way to screen for differentially expressed genes (DEGs) in the process of aggregate formation. In addition, sterile supernatants of R. insidiosa were analyzed under different nutrient conditions using metabolomics to investigate the effect of nutrient-poor conditions on metabolite production by R. insidiosa. We also undertook a combined analysis of transcriptome and metabolome data to further investigate the induction effect of R. insidiosa on L. monocytogenes in a barren environment. The results of the functional annotation analysis on the surface of DEGs and qPCR showed that under nutrient-poor conditions, the acdx, puuE, and acs genes of R. insidiosa were significantly upregulated in biosynthetic processes such as carbon metabolism, metabolic pathways, and biosynthesis of secondary metabolites, with Log2FC reaching 4.39, 3.96, and 3.95 respectively. In contrast, the Log2FC of cydA, cyoB, and rpsJ in oxidative phosphorylation and ribosomal pathways reached 3.74, 3.87, and 4.25, respectively. Thirty-one key components were identified while screening for differential metabolites, which mainly included amino acids and their metabolites, enriched to the pathways of biosynthesis of amino acids, phenylalanine metabolism, and methionine metabolism. Of these, aminomalonic acid and Proximicin B were the special components of R. insidiosa that were metabolized under nutrient-poor conditions.
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Affiliation(s)
- Xifeng Zuo
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Meilin Chen
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Xinshuai Zhang
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Ailing Guo
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Si Cheng
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Rong Zhang
- Liunan District Modern Agricultural Industry Service Center of Liuzhou City, Liuzhou, Guangxi, China
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Kim U, Lee SY, Oh SW. A review of mechanism analysis methods in multi-species biofilm of foodborne pathogens. Food Sci Biotechnol 2023; 32:1665-1677. [PMID: 37780597 PMCID: PMC10533759 DOI: 10.1007/s10068-023-01317-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 04/13/2023] [Accepted: 04/17/2023] [Indexed: 10/03/2023] Open
Abstract
Biofilms are an aggregation of microorganisms that have high resistance to antimicrobial agents. In the food industry, it has been widely studied that foodborne pathogens on both food surfaces and food-contact surfaces can form biofilms thereby threatening the safety of the food. In the natural environment, multi-species biofilms formed by more than two different microorganisms are abundant. In addition, the resistance of multi-species biofilms to antimicrobial agents is higher than that of mono-species biofilms. Therefore, studies to elucidate the mechanisms of multi-species biofilms formed by foodborne pathogens are still required in the food industry. In this review paper, we summarized the novel analytical methods studied to evaluate the mechanisms of multi-species biofilms formed by foodborne pathogens by dividing them into four categories: spatial distribution, bacterial interaction, extracellular polymeric substance production and quorum sensing analytical methods.
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Affiliation(s)
- Unji Kim
- Department of Food and Nutrition, Kookmin University, Seoul, 02727 Republic of Korea
| | - So-Young Lee
- Department of Food and Nutrition, Kookmin University, Seoul, 02727 Republic of Korea
| | - Se-Wook Oh
- Department of Food and Nutrition, Kookmin University, Seoul, 02727 Republic of Korea
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7
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Xu ZS, Ju T, Yang X, Gänzle M. A Meta-Analysis of Bacterial Communities in Food Processing Facilities: Driving Forces for Assembly of Core and Accessory Microbiomes across Different Food Commodities. Microorganisms 2023; 11:1575. [PMID: 37375077 DOI: 10.3390/microorganisms11061575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 05/31/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Microbial spoilage is a major cause of food waste. Microbial spoilage is dependent on the contamination of food from the raw materials or from microbial communities residing in food processing facilities, often as bacterial biofilms. However, limited research has been conducted on the persistence of non-pathogenic spoilage communities in food processing facilities, or whether the bacterial communities differ among food commodities and vary with nutrient availability. To address these gaps, this review re-analyzed data from 39 studies from various food facilities processing cheese (n = 8), fresh meat (n = 16), seafood (n = 7), fresh produce (n = 5) and ready-to-eat products (RTE; n = 3). A core surface-associated microbiome was identified across all food commodities, including Pseudomonas, Acinetobacter, Staphylococcus, Psychrobacter, Stenotrophomonas, Serratia and Microbacterium. Commodity-specific communities were additionally present in all food commodities except RTE foods. The nutrient level on food environment surfaces overall tended to impact the composition of the bacterial community, especially when comparing high-nutrient food contact surfaces to floors with an unknown nutrient level. In addition, the compositions of bacterial communities in biofilms residing in high-nutrient surfaces were significantly different from those of low-nutrient surfaces. Collectively, these findings contribute to a better understanding of the microbial ecology of food processing environments, the development of targeted antimicrobial interventions and ultimately the reduction of food waste and food insecurity and the promotion of food sustainability.
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Affiliation(s)
- Zhaohui S Xu
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Tingting Ju
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Xianqin Yang
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, Lacombe, AB T4L 1W1, Canada
| | - Michael Gänzle
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
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Zhu X, Yan H, Cui Z, Li H, Zhou W, Liu Z, Zhang H, Manoli T, Mo H, Hu L. Ultrasound-assisted blue light killing Vibrio parahaemolyticus to improve salmon preservation. ULTRASONICS SONOCHEMISTRY 2023; 95:106389. [PMID: 37003214 PMCID: PMC10457575 DOI: 10.1016/j.ultsonch.2023.106389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/27/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
Vibrio parahaemolyticus is a typical marine bacterium, which often contaminates seafood and poses a health risk to consumers. Some non-thermal sterilization technologies, such as ultrasonic field (UF) and blue light (BL) irradiation, have been widely used in clinical practice due to their efficiency, safety, and avoidance of drug resistance, but their application in food preservation has not been extensively studied. This study aims to investigate the effect of BL on V. parahaemolyticus in culture media and in ready-to-eat fresh salmon, and to evaluate the killing effectiveness of the UF combined with BL treatment on V. parahaemolyticus. The results showed that BL irradiation at 216 J/cm2 was effective in causing cell death (close to 100%), cell shrinkage and reactive oxygen species (ROS) burst in V. parahaemolyticus. Application of imidazole (IMZ), an inhibitor of ROS generation, attenuated the cell death induced by BL, indicating that ROS were involved in the bactericidal effects of BL on V. parahaemolyticus. Furthermore, UF for 15 min enhanced the bactericidal effect of BL at 216 J/cm2 on V. parahaemolyticus, with the bactericidal rate of 98.81%. In addition, BL sterilization did not affect the color and quality of salmon, and the additive UF treatment for 15 min did not significant impact on the color of salmon. These results suggest that BL or UF combined with BL treatment has potential for salmon preservation, however, it is crucial to strictly control the intensity of BL and the duration of UF treatment to prevent reducing the freshness and brightness of salmon.
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Affiliation(s)
- Xiaolin Zhu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
| | - Han Yan
- School of Food Science, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China; College of Applied Technology, Hezhou University, Hezhou, Guangxi 542899, China
| | - Zhenkun Cui
- School of Food Science, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China.
| | - Hongbo Li
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
| | - Wei Zhou
- School of Food Science, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - Zhenbin Liu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
| | - Hao Zhang
- School of Food Science, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - Tatiana Manoli
- Department of Meat, Fish and Seafood Technology, Odessa National Academy of Food Technologies, Odessa 65039, Ukraine
| | - Haizhen Mo
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
| | - Liangbin Hu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
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Chen Q, Zhang X, Wang Q, Yang J, Zhong Q. The mixed biofilm formed by Listeria monocytogenes and other bacteria: Formation, interaction and control strategies. Crit Rev Food Sci Nutr 2023; 64:8570-8586. [PMID: 37070220 DOI: 10.1080/10408398.2023.2200861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Listeria monocytogenes is an important foodborne pathogen. It can adhere to food or food contact surface for a long time and form biofilm, which will lead to equipment damage, food deterioration, and even human diseases. As the main form of bacteria to survive, the mixed biofilms often exhibit higher resistance to disinfectants and antibiotics, including the mixed biofilms formed by L. monocytogenes and other bacteria. However, the structure and interspecific interaction of the mixed biofilms are very complex. It remains to be explored what role the mixed biofilm could play in the food industry. In this review, we summarized the formation and influence factors of the mixed biofilm developed by L. monocytogenes and other bacteria, as well as the interspecific interactions and the novel control measures in recent years. Moreover, the future control strategies are prospected, in order to provide theoretical basis and reference for the research of the mixed biofilms and the targeted control measures.
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Affiliation(s)
- Qingying Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Xingguo Zhang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Qingqing Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Jingxian Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Qingping Zhong
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
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10
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Foote A, Schutz K, Zhao Z, DiGianivittorio P, Korwin-Mihavics BR, LiPuma JJ, Wargo MJ. Characterizing Biofilm Interactions between Ralstonia insidiosa and Chryseobacterium gleum. Microbiol Spectr 2023; 11:e0410522. [PMID: 36744887 PMCID: PMC10100896 DOI: 10.1128/spectrum.04105-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 01/11/2023] [Indexed: 02/07/2023] Open
Abstract
Ralstonia insidiosa and Chryseobacterium gleum are bacterial species commonly found in potable water systems, and these two species contribute to the robustness of biofilm formation in a model six-species community from the International Space Station (ISS) potable water system. Here, we set about characterizing the interaction between these two ISS-derived strains and examining the extent to which this interaction extends to other strains and species in these two genera. The enhanced biofilm formation between the ISS strains of R. insidiosa and C. gleum is robust to starting inoculum and temperature and occurs in some but not all tested growth media, and evidence does not support a soluble mediator or coaggregation mechanism. These findings shed light on the ISS R. insidiosa and C. gleum interaction, though such enhancement is not common between these species based on our examination of other R. insidiosa and C. gleum strains, as well as other species of Ralstonia and Chryseobacterium. Thus, while the findings presented here increase our understanding of the ISS potable water model system, not all our findings are broadly extrapolatable to strains found outside of the ISS. IMPORTANCE Biofilms present in drinking water systems and terminal fixtures are important for human health, pipe corrosion, and water taste. Here, we examine the enhanced biofilm of cocultures for two very common bacteria from potable water systems: Ralstonia insidiosa and Chryseobacterium gleum. While strains originally isolated on the International Space Station show enhanced dual-species biofilm formation, terrestrial strains do not show the same interaction properties. This study contributes to our understanding of these two species in both dual-culture and monoculture biofilm formation.
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Affiliation(s)
- Andrea Foote
- Cellular, Molecular, and Biomedical Sciences Graduate Program, University of Vermont Larner College of Medicine, Burlington, Vermont, USA
| | - Kristin Schutz
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicine, Burlington, Vermont, USA
| | - Zirui Zhao
- Department of Biology, University of Vermont, Burlington, Vermont, USA
| | - Pauline DiGianivittorio
- Cellular, Molecular, and Biomedical Sciences Graduate Program, University of Vermont Larner College of Medicine, Burlington, Vermont, USA
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicine, Burlington, Vermont, USA
| | - Bethany R. Korwin-Mihavics
- Cellular, Molecular, and Biomedical Sciences Graduate Program, University of Vermont Larner College of Medicine, Burlington, Vermont, USA
| | - John J. LiPuma
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Matthew J. Wargo
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicine, Burlington, Vermont, USA
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11
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Nikolaev Y, Yushina Y, Mardanov A, Gruzdev E, Tikhonova E, El-Registan G, Beletskiy A, Semenova A, Zaiko E, Bataeva D, Polishchuk E. Microbial Biofilms at Meat-Processing Plant as Possible Places of Bacteria Survival. Microorganisms 2022; 10:microorganisms10081583. [PMID: 36014001 PMCID: PMC9415349 DOI: 10.3390/microorganisms10081583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/07/2022] [Accepted: 07/12/2022] [Indexed: 11/17/2022] Open
Abstract
Biofilm contamination in food production threatens food quality and safety, and causes bacterial infections. Study of food biofilms (BF) is of great importance. The taxonomic composition and structural organization of five foods BF taken in different workshops of a meat-processing plant (Moscow, RF) were studied. Samples were taken from the surface of technological equipment and premises. Metagenomic analysis showed both similarities in the presented microorganisms dominating in different samples, and unique families prevailing on certain objects were noted. The bacteria found belonged to 11 phyla (no archaea). The dominant ones were Actinobacteria, Bacteroidetes, Firmicutes, and Proteobacteria. The greatest diversity was in BFs taken from the cutting table of raw material. Biofilms’ bacteria may be the cause of meat, fish and dairy products spoilage possible representatives include Pseudomonas, Flavobacterium, Arcobacter, Vagococcus, Chryseobacterium, Carnobacterium, etc.). Opportunistic human and animal pathogens (possible representatives include Arcobacter, Corynebacterium, Kocuria, etc.) were also found. Electron-microscopic studies of BF thin sections revealed the following: (1) the diversity of cell morphotypes specific to multispecies BFs; (2) morphological similarity of cells in BFs from different samples, micro-colonial growth; (3) age heterogeneity of cells within the same microcolony (vegetative and autolyzed cells, resting forms); (4) heterogeneity of the polymer matrix chemical nature according to ruthenium red staining.
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Affiliation(s)
- Yury Nikolaev
- Federal Research Center “Fundamentals of Biotechnology” of RAS, Leninsky Prospect, 14, 119991 Moscow, Russia
- V.M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina St., 26, 109316 Moscow, Russia
| | - Yulia Yushina
- Federal Research Center “Fundamentals of Biotechnology” of RAS, Leninsky Prospect, 14, 119991 Moscow, Russia
- Correspondence: ; Tel.: +7-(495)676-60-11
| | - Andrey Mardanov
- Federal Research Center “Fundamentals of Biotechnology” of RAS, Leninsky Prospect, 14, 119991 Moscow, Russia
- V.M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina St., 26, 109316 Moscow, Russia
| | - Evgeniy Gruzdev
- Federal Research Center “Fundamentals of Biotechnology” of RAS, Leninsky Prospect, 14, 119991 Moscow, Russia
| | - Ekaterina Tikhonova
- Federal Research Center “Fundamentals of Biotechnology” of RAS, Leninsky Prospect, 14, 119991 Moscow, Russia
| | - Galina El-Registan
- Federal Research Center “Fundamentals of Biotechnology” of RAS, Leninsky Prospect, 14, 119991 Moscow, Russia
| | - Aleksey Beletskiy
- Federal Research Center “Fundamentals of Biotechnology” of RAS, Leninsky Prospect, 14, 119991 Moscow, Russia
| | - Anastasia Semenova
- V.M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina St., 26, 109316 Moscow, Russia
| | - Elena Zaiko
- V.M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina St., 26, 109316 Moscow, Russia
| | - Dagmara Bataeva
- V.M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina St., 26, 109316 Moscow, Russia
| | - Ekaterina Polishchuk
- V.M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina St., 26, 109316 Moscow, Russia
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12
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Kroft B, Gu G, Bolten S, Micallef SA, Luo Y, Millner P, Nou X. Effects of temperature abuse on the growth and survival of Listeria monocytogenes on a wide variety of whole and fresh-cut fruits and vegetables during storage. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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13
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Sonawane JM, Rai AK, Sharma M, Tripathi M, Prasad R. Microbial biofilms: Recent advances and progress in environmental bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153843. [PMID: 35176385 DOI: 10.1016/j.scitotenv.2022.153843] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/15/2022] [Accepted: 02/09/2022] [Indexed: 05/21/2023]
Abstract
Microbial biofilms are formed by adherence of the bacteria through their secreted polymer matrices. The major constituents of the polymer matrices are extracellular DNAs, proteins, polysaccharides. Biofilms have exhibited a promising role in the area of bioremediation. These activities can be further improved by tuning the parameters like quorum sensing, characteristics of the adhesion surface, and other environmental factors. Organic pollutants have created a global concern because of their long-term toxicity on human, marine, and animal life. These contaminants are not easily degradable and continue to prevail in the environment for an extended period. Biofilms are being used for the remediation of different pollutants, among which organic pollutants have been of significance. The bioremediation of organic contaminants using biofilms is an eco-friendly, cheap, and green process. However, the development of this technology demands knowledge on the mechanism of action of the microbes to form the biofilm, types of specific bacteria or fungi responsible for the degradation of a particular organic compound, and the mechanistic role of the biofilm in the degradation of the pollutants. This review puts forth a comprehensive summary of the role of microbial biofilms in the bioremediation of different environment-threatening organic pollutants.
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Affiliation(s)
- Jayesh M Sonawane
- Department of Chemistry, Alexandre-Vachon Pavilion, Laval University, Quebec G1V 0A6, Canada
| | - Ashutosh Kumar Rai
- Department of Biochemistry, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Minaxi Sharma
- Department of Applied Biology, University of Science and Technology, Meghalaya, 793101, India
| | - Manikant Tripathi
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, Uttar Pradesh, India
| | - Ram Prasad
- Department of Botany, Mahatma Gandhi Central University, Motihari 845401, Bihar, India.
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14
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Gu G, Kroft B, Lichtenwald M, Luo Y, Millner P, Patel J, Nou X. Dynamics of Listeria monocytogenes and the microbiome on fresh-cut cantaloupe and romaine lettuce during storage at refrigerated and abusive temperatures. Int J Food Microbiol 2022; 364:109531. [PMID: 35033975 DOI: 10.1016/j.ijfoodmicro.2022.109531] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 12/09/2021] [Accepted: 01/03/2022] [Indexed: 12/25/2022]
Abstract
Listeria monocytogenes (Lm) outbreaks and recalls associated with fresh produce in recent years have heightened concerns and demands from industry and consumers to more effectively mitigate the contamination risk of this foodborne pathogen on fresh produce. In this study, the growth of Lm and indigenous bacteria on fresh-cut cantaloupe and romaine lettuce held at refrigerated (4 °C) and abusive (10-24 °C) temperatures was determined by both culture dependent and independent methods. Composition and dynamics of bacterial communities on Lm inoculated and non-inoculated samples were analyzed by 16S rRNA high-throughput sequencing. Fresh-cut cantaloupe provided favorable growth conditions for Lm proliferation (1.7 and >6 log increase at refrigerated and abusive temperatures, respectively) to overtake indigenous bacteria. The Lm population also increased on fresh-cut lettuce, but the growth rate was lower than that of the total mesophilic bacteria, resulting in 0.4 and >2 log increase at refrigerated and abusive temperatures. Microbial diversity of fresh-cut cantaloupe was significantly lower than that of fresh-cut romaine lettuce. The Shannon index of microbial communities on cantaloupe declined after storage, but it was not significantly changed on lettuce samples. Shifts in the bacterial microbiome on cantaloupe were mainly affected by Lm inoculation, while both inoculation and storage temperature played significant roles on lettuce bacterial communities. Multiple indigenous bacteria, including Leuconostoc and Weissella spp., were negatively correlated to Lm abundance on romaine lettuce, and were determined by bioassay as potential anti-listerial species. Data derived from this study contribute to better understanding of the relationship between Lm and indigenous microbiota on fresh-cut produce during storage.
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Affiliation(s)
- Ganyu Gu
- Environmental Microbial and Food Safety Laboratory, USDA ARS, Beltsville, MD 20705, USA
| | - Brenda Kroft
- Centre for Food Safety and Security Systems, University of Maryland, College Park, MD 20742, USA
| | - Marina Lichtenwald
- Environmental Microbial and Food Safety Laboratory, USDA ARS, Beltsville, MD 20705, USA
| | - Yaguang Luo
- Environmental Microbial and Food Safety Laboratory, USDA ARS, Beltsville, MD 20705, USA
| | - Patricia Millner
- Environmental Microbial and Food Safety Laboratory, USDA ARS, Beltsville, MD 20705, USA
| | - Jitendra Patel
- Environmental Microbial and Food Safety Laboratory, USDA ARS, Beltsville, MD 20705, USA
| | - Xiangwu Nou
- Environmental Microbial and Food Safety Laboratory, USDA ARS, Beltsville, MD 20705, USA.
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15
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Effects of chilling rate on the freshness and microbial community composition of lamb carcasses. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112559] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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16
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Li Q, Guo A, Ma Y, Liu L, Liu W, Zhong Y, Zhang Y. Gene Analysis of Listeria monocytogenes Suspended Aggregates Induced by Ralstonia insidiosa Cell-Free Supernatants under Nutrient-Poor Environments. Microorganisms 2021; 9:2591. [PMID: 34946191 PMCID: PMC8704912 DOI: 10.3390/microorganisms9122591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 01/08/2023] Open
Abstract
Listeria monocytogenes is a zoonotic food-borne pathogen. The production of food-borne pathogenic bacteria aggregates is considered to be a way to improve their resistance and persistence in the food chain. Ralstonia insidiosa has been shown to induce L. monocytogenes to form suspended aggregates, but induction mechanisms remain unclear. In the study, the effect of R. insidiosa cell-free supernatants cultured in 10% TSB medium (10% RIS) on the formation of L. monocytogenes suspended aggregates was evaluated. Next, the Illumina RNA sequencing was used to compare the transcriptional profiles of L. monocytogenes in 10% TSB medium with and without 10% RIS to identify differentially expressed genes (DEGs). The result of functional annotation analysis of DEGs indicated that these genes mainly participate in two component system, bacterial chemotaxis and flagellar assembly. Then the reaction network of L. monocytogenes suspended aggregates with the presence of 10% RIS was summarized. The gene-deletion strain of L. monocytogenes was constructed by homologous recombination. The result showed that cheA and cheY are key genes in the formation of suspended aggregates. This research is the preliminary verification of suspended aggregates' RNA sequencing and is helpful to analyze the aggregation mechanisms of food-borne pathogenic bacteria from a new perspective.
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Affiliation(s)
- Qun Li
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China; (Q.L.); (L.L.); (W.L.); (Y.Z.); (Y.Z.)
| | - Ailing Guo
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China; (Q.L.); (L.L.); (W.L.); (Y.Z.); (Y.Z.)
| | - Yi Ma
- Hubei Provincial Institute for Food Supervision and Test, Wuhan 430070, China
| | - Ling Liu
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China; (Q.L.); (L.L.); (W.L.); (Y.Z.); (Y.Z.)
| | - Wukang Liu
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China; (Q.L.); (L.L.); (W.L.); (Y.Z.); (Y.Z.)
| | - Yuan Zhong
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China; (Q.L.); (L.L.); (W.L.); (Y.Z.); (Y.Z.)
| | - Yawen Zhang
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China; (Q.L.); (L.L.); (W.L.); (Y.Z.); (Y.Z.)
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17
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Li Q, Liu L, Guo A, Zhang X, Liu W, Ruan Y. Formation of Multispecies Biofilms and Their Resistance to Disinfectants in Food Processing Environments: A Review. J Food Prot 2021; 84:2071-2083. [PMID: 34324690 DOI: 10.4315/jfp-21-071] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 07/16/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT In food processing environments, various microorganisms can adhere and aggregate on the surface of equipment, resulting in the formation of multispecies biofilms. Complex interactions among microorganisms may affect the formation of multispecies biofilms and resistance to disinfectants, which are food safety and quality concerns. This article reviews the various interactions among microorganisms in multispecies biofilms, including competitive, cooperative, and neutral interactions. Then, the preliminary mechanisms underlying the formation of multispecies biofilms are discussed in relation to factors, such as quorum-sensing signal molecules, extracellular polymeric substances, and biofilm-regulated genes. Finally, the resistance mechanisms of common contaminating microorganisms to disinfectants in food processing environments are also summarized. This review is expected to facilitate a better understanding of interspecies interactions and provide some implications for the control of multispecies biofilms in food processing. HIGHLIGHTS
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Affiliation(s)
- Qun Li
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
| | - Ling Liu
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
| | - Ailing Guo
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China.,National Research and Development Center for Egg Processing, Wuhan, Hubei 430070, People's Republic of China
| | - Xinshuai Zhang
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
| | - Wukang Liu
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
| | - Yao Ruan
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
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18
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Tan L, Li H, Chen B, Huang J, Li Y, Zheng H, Liu H, Zhao Y, Wang JJ. Dual-species biofilms formation of Vibrio parahaemolyticus and Shewanella putrefaciens and their tolerance to photodynamic inactivation. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.107983] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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19
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Liang C, Zhang D, Zheng X, Wen X, Yan T, Zhang Z, Hou C. Effects of Different Storage Temperatures on the Physicochemical Properties and Bacterial Community Structure of Fresh Lamb Meat. Food Sci Anim Resour 2021; 41:509-526. [PMID: 34017958 PMCID: PMC8112314 DOI: 10.5851/kosfa.2021.e15] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 01/19/2023] Open
Abstract
This study was aimed to compare the physicochemical properties and bacterial
community structure of tray-packaged fresh lamb meat under different storage
temperatures, such as 4°C (chilling), −1.5°C
(supercooling), −4°C (superchilling) and −9°C
(sub-freezing). The total viable counts (TVC), total volatile base nitrogen
(TVB-N), bacterial diversity and metabolic pathways were investigated. The
results indicated that the shelf life of superchilling and sub-freezing storage
was over 70 d, which was significantly longer than that of chilling and
supercooling storage. TVC and TVB-N values showed an increasing trend and were
correlated well (R2>0.92). And the TVB-N values of lamb meat
were exceeded the tolerable limit (15 mg/100 g) only found under chilling and
supercooling storage during storage period. At the genus level,
Pseudomonas was the core spoilage bacteria then followed
Brochothrix for chilling and supercooling storage.
Pseudomonas, Ralstonia,
Psychrobacter and Acinetobacter were the
dominant spoilage bacteria for superchilling and sub-freezing storage.
Furthermore, the bacterial community diversity of lamb meat stored at chilling
and supercooling storage decreased with the storage time prolonged, which was
opposite to the outcome of meat stored under superchilling and sub-freezing
storage. For chilling and supercooling storage, the abundance of main
metabolisms (carbohydrate metabolism and amino acid metabolism, etc.) of
bacteria increased with the storage time prolonged, which was opposite to
superchilling storage. This may be related to the bacteria community diversity
and the formation of dominant spoilage bacteria. In conclusion, this work
provides data for the preservation of fresh lamb meat which will benefit the
meat industry.
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Affiliation(s)
- Ce Liang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Dequan Zhang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Xiaochun Zheng
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Xiangyuan Wen
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Tongjing Yan
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Zhisheng Zhang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Chengli Hou
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
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20
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Sadiq FA, Burmølle M, Heyndrickx M, Flint S, Lu W, Chen W, Zhao J, Zhang H. Community-wide changes reflecting bacterial interspecific interactions in multispecies biofilms. Crit Rev Microbiol 2021; 47:338-358. [PMID: 33651958 DOI: 10.1080/1040841x.2021.1887079] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Existence of most bacterial species, in natural, industrial, and clinical settings in the form of surface-adhered communities or biofilms has been well acknowledged for decades. Research predominantly focusses on single-species biofilms as these are relatively easy to study. However, microbiologists are now interested in studying multispecies biofilms and revealing interspecific interactions in these communities because of the existence of a plethora of different bacterial species together in almost all natural settings. Multispecies biofilms-led emergent properties are triggered by bacterial social interactions which have huge implication for research and practical knowledge useful for the control and manipulation of these microbial communities. Here, we discuss some important bacterial interactions that take place in multispecies biofilm communities and provide insights into community-wide changes that indicate bacterial interactions and elucidate underlying mechanisms.
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Affiliation(s)
- Faizan Ahmed Sadiq
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Mette Burmølle
- Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Marc Heyndrickx
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Technology & Food Sciences Unit, Melle, Belgium.,Department of Pathology, Bacteriology and Poultry Diseases, Ghent University, Merelbeke, Belgium
| | - Steve Flint
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand
| | - Wenwei Lu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, China
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21
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Rao Y, Shang W, Yang Y, Zhou R, Rao X. Fighting Mixed-Species Microbial Biofilms With Cold Atmospheric Plasma. Front Microbiol 2020; 11:1000. [PMID: 32508796 PMCID: PMC7251026 DOI: 10.3389/fmicb.2020.01000] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 04/24/2020] [Indexed: 01/05/2023] Open
Abstract
Most biofilms in nature are formed by multiple microbial species, and such mixed-species biofilms represent the actual lifestyles of microbes, including bacteria, fungi, viruses (phages), and/or protozoa. Microorganisms cooperate and compete in mixed-species biofilms. Mixed-species biofilm formation and environmental resistance are major threats to water supply, food industry, and human health. The methods commonly used for microbial eradication, such as antibiotic or disinfectant treatments, are often ineffective for mixed-species biofilm consortia due to their physical matrix barrier and physiological interactions. For the last decade, an increasing number of investigations have been devoted to the usage of cold atmospheric plasma (CAP), which is produced by dielectric barrier discharges or plasma jets to prevent or eliminate microbial biofilms. Here, we summarized the production of CAP, the inactivation of microorganisms upon CAP treatment, and the microbial factors affecting the efficacy of CAP procedure. The applications of CAP as antibiotic alternative strategies for fighting mixed-species biofilms were also addressed.
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Affiliation(s)
- Yifan Rao
- Department of Microbiology, College of Basic Medical Sciences, Key Laboratory of Microbial Engineering Under the Educational Committee in Chongqing, Army Medical University, Chongqing, China
| | - Weilong Shang
- Department of Microbiology, College of Basic Medical Sciences, Key Laboratory of Microbial Engineering Under the Educational Committee in Chongqing, Army Medical University, Chongqing, China
| | - Yi Yang
- Department of Microbiology, College of Basic Medical Sciences, Key Laboratory of Microbial Engineering Under the Educational Committee in Chongqing, Army Medical University, Chongqing, China
| | - Renjie Zhou
- Department of Emergency, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Xiancai Rao
- Department of Microbiology, College of Basic Medical Sciences, Key Laboratory of Microbial Engineering Under the Educational Committee in Chongqing, Army Medical University, Chongqing, China
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22
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Klančnik A, Gobin I, Jeršek B, Smole Možina S, Vučković D, Tušek Žnidarič M, Abram M. Adhesion of Campylobacter jejuni Is Increased in Association with Foodborne Bacteria. Microorganisms 2020; 8:E201. [PMID: 32023990 PMCID: PMC7074767 DOI: 10.3390/microorganisms8020201] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 01/29/2020] [Accepted: 01/30/2020] [Indexed: 12/20/2022] Open
Abstract
The aim of this study was to evaluate Campylobacter jejuni NTCT 11168 adhesion to abiotic and biotic surfaces when grown in co-culture with Escherichia coli ATCC 11229 and/or Listeria monocytogenes 4b. Adhesion of C. jejuni to polystyrene and to Caco-2 cells and Acanthamoeba castellanii was lower for at least 3 log CFU/mL compared to E. coli and L. monocytogenes. Electron micrographs of ultrathin sections revealed interactions of C. jejuni with host cells. In co-culture with E. coli and L. monocytogenes, adhesion of C. jejuni to all tested surfaces was significantly increased for more than 1 log CFU/mL. There was 10% higher aggregation for C. jejuni than for other pathogens, and high co-aggregation of co-cultures of C. jejuni with E. coli and L. monocytogenes. These data show that C. jejuni in co-cultures with E. coli and L. monocytogenes present significantly higher risk than C. jejuni as mono-cultures, which need to be taken into account in risk evaluation. C. jejuni adhesion is a prerequisite for their colonization, biofilm formation, and further contamination of the environment. C. jejuni survival under adverse conditions as a factor in their pathogenicity and depends on their adhesion to different surfaces, not only as individual strains, but also in co-cultures with other bacteria like E. coli and L. monocytogenes.
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Affiliation(s)
- Anja Klančnik
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (B.J.); (S.S.M.)
| | - Ivana Gobin
- Department of Microbiology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20/1, HR-51000 Rijeka, Croatia; (I.G.); (D.V.); (M.A.)
| | - Barbara Jeršek
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (B.J.); (S.S.M.)
| | - Sonja Smole Možina
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (B.J.); (S.S.M.)
| | - Darinka Vučković
- Department of Microbiology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20/1, HR-51000 Rijeka, Croatia; (I.G.); (D.V.); (M.A.)
| | - Magda Tušek Žnidarič
- Department of Biotechnology and Systems Biology, National Institute of Biology, Večna pot 111, SI-1000 Ljubljana, Slovenia;
| | - Maja Abram
- Department of Microbiology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20/1, HR-51000 Rijeka, Croatia; (I.G.); (D.V.); (M.A.)
- Department of Clinical Microbiology, Clinical Hospital Centre Rijeka, Krešimirova 42, HR-51000 Rijeka, Croatia
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23
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Thompson AF, English EL, Nock AM, Willsey GG, Eckstrom K, Cairns B, Bavelock M, Tighe SW, Foote A, Shulman H, Pericleous A, Gupta S, Kadouri DE, Wargo MJ. Characterizing species interactions that contribute to biofilm formation in a multispecies model of a potable water bacterial community. MICROBIOLOGY (READING, ENGLAND) 2020; 166:34-43. [PMID: 31585061 PMCID: PMC7137775 DOI: 10.1099/mic.0.000849] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 08/16/2019] [Indexed: 12/17/2022]
Abstract
Microbial biofilms are ubiquitous in drinking water systems, yet our understanding of drinking water biofilms lags behind our understanding of those in other environments. Here, a six-member model bacterial community was used to identify the interactions and individual contributions of each species to community biofilm formation. These bacteria were isolated from the International Space Station potable water system and include Cupriavidus metallidurans, Chryseobacterium gleum, Ralstonia insidiosa, Ralstonia pickettii, Methylorubrum (Methylobacterium) populi and Sphingomonas paucimobilis, but all six species are common members of terrestrial potable water systems. Using reconstituted assemblages, from pairs to all 6 members, community biofilm formation was observed to be robust to the absence of any single species and only removal of the C. gleum/S. paucimobilis pair, out of all 15 possible 2-species subtractions, led to loss of community biofilm formation. In conjunction with these findings, dual-species biofilm formation assays supported the view that the contribution of C. gleum to community biofilm formation was dependent on synergistic biofilm formation with either R. insidiosa or C. metallidurans. These data support a model of multiple, partially redundant species interactions to generate robustness in biofilm formation. A bacteriophage and multiple predatory bacteria were used to test the resilience of the community to the removal of individual members in situ, but the combination of precise and substantial depletion of a single target species was not achievable. We propose that this assemblage can be used as a tractable model to understand the molecular bases of the interactions described here and to decipher other functions of drinking water biofilms.
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Affiliation(s)
- Alex F. Thompson
- Cellular, Molecular, and Biomedical Sciences Graduate Program, University of Vermont Gradaute College, Burlington, VT 05405, USA
| | - Erika L. English
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicin, Burlington, VT 05405, USA
| | - Adam M. Nock
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicin, Burlington, VT 05405, USA
- Present address: Host Parasite Interactions Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Graham G. Willsey
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicin, Burlington, VT 05405, USA
- The Vermont Lung Center, University of Vermont Larner College of Medicine, Burlington, VT 05405, USA
| | - Korin Eckstrom
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicin, Burlington, VT 05405, USA
| | - Brynn Cairns
- Department of Natural Sciences, Northern Vermont University, Johnson, VT 05656, USA
| | | | - Scott W. Tighe
- The Vermont Integrated Genomics Resource, University of Vermont Larner College of Medicine, Burlington, VT 05405, USA
| | - Andrea Foote
- Cellular, Molecular, and Biomedical Sciences Graduate Program, University of Vermont Gradaute College, Burlington, VT 05405, USA
| | - Hannah Shulman
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicin, Burlington, VT 05405, USA
| | | | - Shilpi Gupta
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ 07103
| | - Daniel E. Kadouri
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ 07103
| | - Matthew J. Wargo
- Department of Microbiology and Molecular Genetics, University of Vermont Larner College of Medicin, Burlington, VT 05405, USA
- The Vermont Lung Center, University of Vermont Larner College of Medicine, Burlington, VT 05405, USA
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24
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Santiago TR, Bonatto CC, Rossato M, Lopes CAP, Lopes CA, G Mizubuti ES, Silva LP. Green synthesis of silver nanoparticles using tomato leaf extract and their entrapment in chitosan nanoparticles to control bacterial wilt. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:4248-4259. [PMID: 30801730 DOI: 10.1002/jsfa.9656] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/23/2019] [Accepted: 02/20/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Silver nanoparticles (AgNPs), particularly those entrapped in polymeric nanosystems, have arisen as options for managing plant bacterial diseases. Among the biopolymers useful for the entrapment of AgNPs, chitosan is promising because of its low cost, good biocompatibility, antimicrobial properties and biodegradability. The present study aimed: (i) to greenly-synthesize AgNPs using different concentrations of aqueous extract of tomato leaves followed by entrapment of AgNPs with chitosan (CH-AgNPs); (ii) to characterize the optical, structural and biological properties of the nanosystems produced; (iii) to evaluate the antimicrobial activities of AgNPs and nanomaterials; and (iv) to assess the effectiveness of AgNPs and nanomaterials for controlling tomato bacterial wilt caused by Ralstonia solanacearum. RESULTS Spherical and oval AgNPs had incipient colloidal instability, although the concentration of the tomato leaf extract influenced both size (< 87 nm) and the polydispersity index. Nanomaterials (< 271 nm in size) were characterized by a highly stable matrix of chitosan containing polydisperse AgNPs. Free AgNPs and CH-AgNPs were stable for up to 30 days, with no significant alteration in physicochemical parameters. The AgNPs and nanomaterials had antibacterial activity and decreased bacterial growth at micromolar concentrations after 48 h. Morphological changes in R. solanacearum cells were observed after treatment with CH-AgNPs. The application of CH-AgNPs at 256 µmol L-1 reduced the incidence of bacterial wilt in a partially resistant tomato genotype but not in the susceptible line. CONCLUSION Greenly-synthesized chitosan-derived nanomaterials containing AgNPs produced with leaf extracts from their own species appear to comprise a promising and sustainable alternative in an integrated management approach aiming to reduce the yield losses caused by bacterial wilt. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Thaís R Santiago
- Laboratório de Nanobiotecnologia (LNANO), Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Cínthia C Bonatto
- Laboratório de Nanobiotecnologia (LNANO), Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil
- Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Brazil
- Pesquisa Aplicada, TecSinapse, São Paulo, Brazil
| | - Maurício Rossato
- Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Brazil
- Laboratório de Fitopatologia, Embrapa Hortaliças, Brasília, Brazil
| | - Cláudio A P Lopes
- Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Brazil
| | - Carlos A Lopes
- Laboratório de Fitopatologia, Embrapa Hortaliças, Brasília, Brazil
| | | | - Luciano P Silva
- Laboratório de Nanobiotecnologia (LNANO), Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil
- Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Brazil
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25
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Yuan L, Hansen MF, Røder HL, Wang N, Burmølle M, He G. Mixed-species biofilms in the food industry: Current knowledge and novel control strategies. Crit Rev Food Sci Nutr 2019; 60:2277-2293. [PMID: 31257907 DOI: 10.1080/10408398.2019.1632790] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Attachment of microorganisms to food contact surfaces and the subsequent formation of biofilms may cause equipment damage, food spoilage and even diseases. Mixed-species biofilms are ubiquitous in the food industry and they generally exhibit higher resistance to disinfectants and antimicrobials compared to single-species biofilms. The physiology and metabolic activity of microorganisms in mixed-species biofilms are however rather complicated to study, and despite targeted research efforts, the potential role of mixed-species biofilms in food industry is still rather unexplored. In this review, we summarize recent studies in the context of bacterial social interactions in mixed-species biofilms, resistance to disinfectants, detection methods, and potential novel strategies to control the formation of mixed-species biofilms for enhanced food safety and food quality.
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Affiliation(s)
- Lei Yuan
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China.,Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Mads Frederik Hansen
- Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Henriette Lyng Røder
- Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Ni Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Mette Burmølle
- Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Guoqing He
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
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26
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Gu G, Ottesen A, Bolten S, Wang L, Luo Y, Rideout S, Lyu S, Nou X. Impact of routine sanitation on the microbiomes in a fresh produce processing facility. Int J Food Microbiol 2019; 294:31-41. [DOI: 10.1016/j.ijfoodmicro.2019.02.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 12/18/2022]
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27
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Gao CH, Zhang M, Wu Y, Huang Q, Cai P. Divergent Influence to a Pathogen Invader by Resident Bacteria with Different Social Interactions. MICROBIAL ECOLOGY 2019; 77:76-86. [PMID: 29858645 DOI: 10.1007/s00248-018-1207-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
Bacterial social interaction is a potential influencing factor in determining the fate of invading pathogens in diverse environments. In this study, interactions between two representative resident species (Bacillus subtilis and Pseudomonas putida) and a leading food-borne disease causative pathogen (Vibrio parahaemolyticus) were examined. An antagonistic effect toward V. parahaemolyticus was observed for B. subtilis but not for P. putida. However, the relative richness of the pathogen remained rather high in B. subtilis co-cultures and was, unexpectedly, not sensitive to the initial inoculation ratios. Furthermore, two approaches were found to be efficient at modulating the relative richness of the pathogen. (1) The addition of trace glycerol and manganese to Luria-Bertani medium (LBGM) reduced the richness of V. parahaemolyticus in the co-culture with B. subtilis and in contrast, increased its richness in the co-culture with P. putida, although it did not affect the growth of V. parahaemolyticus by its own. (2) The relative richness of V. parahaemolyticus on semisolid medium decreased significantly as a function of an agar gradient, ranging from 0 to 2%. Furthermore, we explored the molecular basis of bacterial interaction through transcriptomic analysis. In summary, we investigated the interactions between a pathogen invader and two resident bacteria species, showing that the different influences on a pathogen by different types of interactions can be modulated by chemicals and medium fluidity.
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Affiliation(s)
- Chun-Hui Gao
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ming Zhang
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yichao Wu
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qiaoyun Huang
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Peng Cai
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
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28
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Shifts in spinach microbial communities after chlorine washing and storage at compliant and abusive temperatures. Food Microbiol 2018. [DOI: 10.1016/j.fm.2018.01.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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29
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Xu Y, Nagy A, Bauchan GR, Xia X, Nou X. Enhanced biofilm formation in dual-species culture of Listeria monocytogenes and Ralstonia insidiosa. AIMS Microbiol 2017; 3:774-783. [PMID: 31294188 PMCID: PMC6604966 DOI: 10.3934/microbiol.2017.4.774] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 08/27/2017] [Indexed: 01/13/2023] Open
Abstract
In the natural environments microorganisms coexist in communities as biofilms. Since foodborne pathogens have varying abilities to form biofilms, investigation of bacterial interactions in biofilm formation may enhance our understanding of the persistence of these foodborne pathogens in the environment. Thus the objective of this study was to investigate the interactions between Listeria monocytogenes and Ralstonia insidiosa in dual species biofilms. Biofilm development after 24 h was measured using crystal violet in 96-well microtiter plate. Scanning electron microscopy and cell enumeration were employed after growth on stainless steel coupons. When compared with their single species counterparts, the dual species biofilms exhibited a significant increase in biofilm biomass. The number of L. monocytogenes in co-culture biofilms on stainless steel also increased significantly. However, there was no effect on the biofilm formation of L. monocytogenes when cultured with R. insidiosa separated by a semi-permeable membrane-linked compartment or cultured in R. insidiosa cell-free supernatant, indicating that direct cell-cell contact is critical for this interaction.
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Affiliation(s)
- Yunfeng Xu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.,USDA Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, Maryland 20705, USA
| | - Attila Nagy
- USDA Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, Maryland 20705, USA
| | - Gary R Bauchan
- USDA Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, Maryland 20705, USA
| | - Xiaodong Xia
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiangwu Nou
- USDA Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, Maryland 20705, USA
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30
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Møretrø T, Langsrud S. Residential Bacteria on Surfaces in the Food Industry and Their Implications for Food Safety and Quality. Compr Rev Food Sci Food Saf 2017; 16:1022-1041. [DOI: 10.1111/1541-4337.12283] [Citation(s) in RCA: 145] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 06/03/2017] [Accepted: 06/06/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Trond Møretrø
- Nofima, The Norwegian Inst. of Food; Fishery and Aquaculture Research; N-1430 Ås Norway
| | - Solveig Langsrud
- Nofima, The Norwegian Inst. of Food; Fishery and Aquaculture Research; N-1430 Ås Norway
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31
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Guo A, Xu Y, Mowery J, Nagy A, Bauchan G, Nou X. Ralstonia insidiosa induces cell aggregation of Listeria monocytogenes. Food Control 2016. [DOI: 10.1016/j.foodcont.2016.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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