101
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Hossain MI, Mizan MFR, Ashrafudoulla M, Nahar S, Joo HJ, Jahid IK, Park SH, Kim KS, Ha SD. Inhibitory effects of probiotic potential lactic acid bacteria isolated from kimchi against Listeria monocytogenes biofilm on lettuce, stainless-steel surfaces, and MBEC™ biofilm device. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108864] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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102
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Montso PK, Mlambo V, Ateba CN. Characterization of Lytic Bacteriophages Infecting Multidrug-Resistant Shiga Toxigenic Atypical Escherichia coli O177 Strains Isolated From Cattle Feces. Front Public Health 2019; 7:355. [PMID: 32039126 PMCID: PMC6988782 DOI: 10.3389/fpubh.2019.00355] [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: 07/10/2019] [Accepted: 11/07/2019] [Indexed: 11/13/2022] Open
Abstract
The increasing incidence of antibiotic resistance and emergence of virulent bacterial pathogens, coupled with a lack of new effective antibiotics, has reignited interest in the use of lytic bacteriophage therapy. The aim of this study was to characterize lytic Escherichia coli O177-specific bacteriophages isolated from cattle feces to determine their potential application as biocontrol agents. A total of 31 lytic E. coli O177-specific bacteriophages were isolated. A large proportion (71%) of these phage isolates produced large plaques while 29% produced small plaques on 0.3% soft agar. Based on different plaque morphologies and clarity and size of plaques, eight phages were selected for further analyses. Spot test and efficiency of plating (EOP) analyses were performed to determine the host range for selected phages. Phage morphotype and growth were analyzed using transmission electron microscopy and the one-step growth curve method. Phages were also assessed for thermal and pH stability. The spot test revealed that all selected phages were capable of infecting different environmental E. coli strains. However, none of the phages infected American Type Culture Collection (ATCC) and environmental Salmonella strains. Furthermore, EOP analysis (range: 0.1-1.0) showed that phages were capable of infecting a wide range of E. coli isolates. Selected phage isolates had a similar morphotype (an icosahedral head and a contractile tail) and were classified under the order Caudovirales, Myoviridae family. The icosahedral heads ranged from 81.2 to 110.77 nm, while the contractile tails ranged from 115.55 to 132.57 nm in size. The phages were found to be still active after 60 min of incubation at 37 and 40°C. Incremental levels of pH induced a quadratic response on stability of all phages. The pH optima for all eight phages ranged between 7.6 and 8.0, while at pH 3.0 all phages were inactive. Phage latent period ranged between 15 and 25 min while burst size ranged from 91 to 522 virion particles [plaque-forming unit (PFU)] per infected cell. These results demonstrate that lytic E. coli O177-specific bacteriophages isolated from cattle feces are highly stable and have the capacity to infect different E. coli strains, traits that make them potential biocontrol agents.
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Affiliation(s)
- Peter Kotsoana Montso
- Bacteriophage Therapy and Phage Bio-Control Laboratory, Department of Microbiology, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
- Food Security and Safety Niche Area, North-West University, Mmabatho, South Africa
| | - Victor Mlambo
- Faculty of Agriculture and Natural Sciences, School of Agricultural Sciences, University of Mpumalanga, Mbombela, South Africa
| | - Collins Njie Ateba
- Bacteriophage Therapy and Phage Bio-Control Laboratory, Department of Microbiology, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
- Food Security and Safety Niche Area, North-West University, Mmabatho, South Africa
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103
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Entrapment of a phage cocktail and cinnamaldehyde on sodium alginate emulsion-based films to fight food contamination by Escherichia coli and Salmonella Enteritidis. Food Res Int 2019; 128:108791. [PMID: 31955758 DOI: 10.1016/j.foodres.2019.108791] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 12/28/2022]
Abstract
Notwithstanding the implementation of good processing practices in food companies and appropriate washing of food products by the consumer, Salmonella and Escherichia coli outbreaks continue to occur. In this study, different combinations of bacteriophages (phages) and cinnamaldehyde (CNMA) were incorporated on sodium alginate emulsion-based films to impart them with antimicrobial activity towards S. Enteritidis and E. coli. Films were prepared by casting and they were characterized in terms of CNMA and/or phages loading, thickness, moisture content, water vapor permeability (WVP), swelling index (SW), chemical interactions by FTIR, surface morphology by SEM and antimicrobial performance. Results showed that phages incorporation was not compromised by CNMA as evidenced by their viability inside the films. Increasing CNMA concentration yielded formulations less heterogeneous and a higher amount of CNMA loaded. Films characterization revealed that, in general, phages incorporation did not introduce significant changes on films parameters while the presence of CNMA increased the roughness, thickness and swelling ability of films. Sodium alginate films incorporated with EC4 and φ135 phages displayed antimicrobial activity against E. coli and S. Enteritidis, respectively, while CNMA empowered the films with activity against both species. Combination of both phages with the higher concentration of CNMA resulted in a synergic antimicrobial effect against E. coli and a facilitative effect against Salmonella. Overall, incorporation of EC4 and φ135 phages together with CNMA on alginate emulsion-based films holds great potential to be further applied in food packaging to prevent food contamination.
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104
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Pietrysiak E, Smith S, Ganjyal GM. Food Safety Interventions to Control
Listeria monocytogenes
in the Fresh Apple Packing Industry: A Review. Compr Rev Food Sci Food Saf 2019; 18:1705-1726. [DOI: 10.1111/1541-4337.12496] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 05/13/2019] [Accepted: 07/29/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Ewa Pietrysiak
- School of Food Science Washington State Univ. P.O. Box 646376 Pullman WA 99164‐6376 U.S.A
| | - Stephanie Smith
- School of Food Science Washington State Univ. P.O. Box 646376 Pullman WA 99164‐6376 U.S.A
| | - Girish M Ganjyal
- School of Food Science Washington State Univ. P.O. Box 646376 Pullman WA 99164‐6376 U.S.A
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105
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Tayyarcan EK, Acar Soykut E, Menteş Yılmaz O, Boyaci IH, Khaaladi M, Fattouch S. Investigation of different interactions betweenStaphylococcus aureusphages and pomegranate peel, grape seed, and black cumin extracts. J Food Saf 2019. [DOI: 10.1111/jfs.12679] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
| | - Esra Acar Soykut
- Yeniçağa Yaşar Çelik Vocational SchoolBolu Abant İzzet Baysal University Bolu Turkey
| | | | - Ismail H. Boyaci
- Department of Food EngineeringHacettepe University Ankara Turkey
| | - Maha Khaaladi
- National Institute of Applied Sciences and Technology (INSAT)University of Carthage Tunis Tunisia
| | - Sami Fattouch
- National Institute of Applied Sciences and Technology (INSAT)University of Carthage Tunis Tunisia
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106
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Sommer J, Trautner C, Witte AK, Fister S, Schoder D, Rossmanith P, Mester PJ. Don't Shut the Stable Door after the Phage Has Bolted-The Importance of Bacteriophage Inactivation in Food Environments. Viruses 2019; 11:E468. [PMID: 31121941 PMCID: PMC6563225 DOI: 10.3390/v11050468] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/05/2019] [Accepted: 05/17/2019] [Indexed: 12/11/2022] Open
Abstract
In recent years, a new potential measure against foodborne pathogenic bacteria was rediscovered-bacteriophages. However, despite all their advantages, in connection to their widespread application in the food industry, negative consequences such as an uncontrolled phage spread as well as a development of phage resistant bacteria can occur. These problems are mostly a result of long-term persistence of phages in the food production environment. As this topic has been neglected so far, this article reviews the current knowledge regarding the effectiveness of disinfectant strategies for phage inactivation and removal. For this purpose, the main commercial phage products, as well as their application fields are first discussed in terms of applicable inactivation strategies and legal regulations. Secondly, an overview of the effectiveness of disinfectants for bacteriophage inactivation in general and commercial phages in particular is given. Finally, this review outlines a possible strategy for users of commercial phage products in order to improve the effectiveness of phage inactivation and removal after application.
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Affiliation(s)
- Julia Sommer
- Christian Doppler Laboratory for Monitoring of Microbial Contaminants, Department for Farm Animal and Public Health in Veterinary Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Christoph Trautner
- Christian Doppler Laboratory for Monitoring of Microbial Contaminants, Department for Farm Animal and Public Health in Veterinary Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Anna Kristina Witte
- Christian Doppler Laboratory for Monitoring of Microbial Contaminants, Department for Farm Animal and Public Health in Veterinary Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210 Vienna, Austria.
- HTK Hygiene Technologie Kompetenzzentrum GmbH, Buger Str. 80, 96049 Bamberg, Germany.
| | - Susanne Fister
- Former member of Christian Doppler Laboratory for Monitoring of Microbial Contaminants, Institute of Milk Hygiene, Milk Technology and Food Science, Department for Farm Animal and Public Veterinary Health, University of Veterinary Medicine, Veterinärplatz 1, 1210 Vienna, Austria.
| | - Dagmar Schoder
- Unit of Food Microbiology, Institute of Food Safety, Food Technology and Veterinary Public Health, Department for Farm Animal and Public Health in Veterinary Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Peter Rossmanith
- Christian Doppler Laboratory for Monitoring of Microbial Contaminants, Department for Farm Animal and Public Health in Veterinary Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210 Vienna, Austria.
- Unit of Food Microbiology, Institute of Food Safety, Food Technology and Veterinary Public Health, Department for Farm Animal and Public Health in Veterinary Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210 Vienna, Austria.
| | - Patrick-Julian Mester
- Christian Doppler Laboratory for Monitoring of Microbial Contaminants, Department for Farm Animal and Public Health in Veterinary Medicine, University of Veterinary Medicine, Veterinaerplatz 1, 1210 Vienna, Austria.
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107
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Zeineldin M, Aldridge B, Lowe J. Antimicrobial Effects on Swine Gastrointestinal Microbiota and Their Accompanying Antibiotic Resistome. Front Microbiol 2019; 10:1035. [PMID: 31156580 PMCID: PMC6530630 DOI: 10.3389/fmicb.2019.01035] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 04/24/2019] [Indexed: 12/14/2022] Open
Abstract
Antimicrobials are the most commonly prescribed drugs in the swine industry. While antimicrobials are an effective treatment for serious bacterial infections, their use has been associated with major adverse effects on health. It has been shown that antimicrobials have substantial direct and indirect impacts on the swine gastrointestinal (GI) microbiota and their accompanying antimicrobial resistome. Antimicrobials have also been associated with a significant public health concern through selection of resistant opportunistic pathogens and increased emergence of antimicrobial resistance genes (ARGs). Since the mutualistic microbiota play a crucial role in host immune regulation and in providing colonization resistance against potential pathogens, the detrimental impacts of antimicrobial treatment on the microbiota structure and its metabolic activity may lead to further health complications later in life. In this review, we present an overview of antimicrobial use in the swine industry and their role in the emergence of antimicrobial resistance. Additionally, we review our current understanding of GI microbiota and their role in swine health. Finally, we investigate the effects of antimicrobial administration on the swine GI microbiota and their accompanying antibiotic resistome. The presented data is crucial for the development of robust non-antibiotic alternative strategies to restore the GI microbiota functionality and guarantee effective continued use of antimicrobials in the livestock production system.
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Affiliation(s)
- Mohamed Zeineldin
- Integrated Food Animal Management Systems, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Department of Animal Medicine, College of Veterinary Medicine, Benha University, Benha, Egypt
| | - Brian Aldridge
- Integrated Food Animal Management Systems, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - James Lowe
- Integrated Food Animal Management Systems, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Champaign, IL, United States
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108
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del Rio B, Sánchez-Llana E, Redruello B, Magadan AH, Fernández M, Martin MC, Ladero V, Alvarez MA. Enterococcus faecalis Bacteriophage 156 Is an Effective Biotechnological Tool for Reducing the Presence of Tyramine and Putrescine in an Experimental Cheese Model. Front Microbiol 2019; 10:566. [PMID: 30949154 PMCID: PMC6435515 DOI: 10.3389/fmicb.2019.00566] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 03/05/2019] [Indexed: 12/13/2022] Open
Abstract
Biogenic amines (BA) - nitrogenous compounds of low molecular weight - are the result of metabolism of certain amino acids. They are biologically present in all living organisms and play essential physiological roles. However, their accumulation in foodstuffs due to the metabolic activity of certain microorganisms represents a toxicological risk. Containing such microorganisms, and with an abundance of precursor substrate amino acids, fermented foods in general, and cheeses in particular, provide an ideal matrix for the accumulation of these toxic compounds. Unfortunately, the main microorganisms responsible for BA accumulation are members of the lactic acid bacteria (LAB) group, which are also essential for the development of the organoleptic characteristics of the final product. The methods used to reduce the BA content of cheese, such as milk pasteurization, commonly fail to do so, and affect desirable non-BA-producing LAB as well. Bacteriophages have been proposed as biotechnological tools for diminishing the presence of undesirable microorganisms in dairy products. Given their specificity, they could be used to target the population of BA-producing bacteria. In this work, we aimed to explore the use of Enterococcus faecalis infecting phages as a tool to reduce the content of BA in dairy products. For this, we proceeded to the isolation and characterization of E. faecalis bacteriophage 156, a member of the family Myoviridae. Its genome was sequenced and compared with that of E. faecalis family Myoviridae phages available in public databases. Its capacity to decrease the accumulation of the BA tyramine and putrescine in an experimental laboratory-scale cheese model was proven.
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Affiliation(s)
- Beatriz del Rio
- Department of Biotechnology of Dairy Products, Institute of Dairy Products of Asturias – Spanish National Research Council (IPLA-CSIC), Villaviciosa, Spain
| | - Esther Sánchez-Llana
- Department of Biotechnology of Dairy Products, Institute of Dairy Products of Asturias – Spanish National Research Council (IPLA-CSIC), Villaviciosa, Spain
| | - Begoña Redruello
- Department of Biotechnology of Dairy Products, Institute of Dairy Products of Asturias – Spanish National Research Council (IPLA-CSIC), Villaviciosa, Spain
| | - Alfonso H. Magadan
- Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Université de Bretagne Occidentale, Plouzané, France
| | - María Fernández
- Department of Biotechnology of Dairy Products, Institute of Dairy Products of Asturias – Spanish National Research Council (IPLA-CSIC), Villaviciosa, Spain
| | - Maria Cruz Martin
- Department of Biotechnology of Dairy Products, Institute of Dairy Products of Asturias – Spanish National Research Council (IPLA-CSIC), Villaviciosa, Spain
| | - Victor Ladero
- Department of Biotechnology of Dairy Products, Institute of Dairy Products of Asturias – Spanish National Research Council (IPLA-CSIC), Villaviciosa, Spain
| | - Miguel A. Alvarez
- Department of Biotechnology of Dairy Products, Institute of Dairy Products of Asturias – Spanish National Research Council (IPLA-CSIC), Villaviciosa, Spain
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109
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Lytic KFS-SE2 phage as a novel bio-receptor for Salmonella Enteritidis detection. J Microbiol 2019; 57:170-179. [PMID: 30706346 DOI: 10.1007/s12275-019-8610-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 11/26/2018] [Accepted: 12/03/2018] [Indexed: 10/27/2022]
Abstract
Since Salmonella Enteritidis is one of the major foodborne pathogens, on-site applicable rapid detection methods have been required for its control. The purpose of this study was to isolate and purify S. Enteritidis-specific phage (KFS-SE2 phage) from an eel farm and to investigate its feasibility as a novel, efficient, and reliable bio-receptor for its employment. KFS-SE2 phage was successfully isolated at a high concentration of (2.31 ± 0.43) × 1011 PFU/ml, and consisted of an icosahedral head of 65.44 ± 10.08 nm with a non-contractile tail of 135.21 ± 12.41 nm. The morphological and phylogenetic analysis confirmed that it belongs to the Pis4avirus genus in the family of Siphoviridae. KFS-SE2 genome consisted of 48,608 bp with 45.7% of GC content. Genome analysis represented KFS-SE2 to have distinctive characteristics as a novel phage. Comparative analysis of KFS-SE2 phage with closely related strains confirmed its novelty by the presence of unique proteins. KFS-SE2 phage exhibited excellent specificity to S. Enteritidis and was stable under the temperature range of 4 to 50°C and pH of 3 to 11 (P < 0.05). The latent time was determined to be 20 min. Overall, a new lytic KFS-SE2 phage was successfully isolated from the environment at a high concentration and the excellent feasibility of KFS-SE2 phage was demonstrated as a new bio-receptor for S. Enteritidis detection.
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110
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Gutiérrez D, Fernández L, Rodríguez A, García P. Role of Bacteriophages in the Implementation of a Sustainable Dairy Chain. Front Microbiol 2019; 10:12. [PMID: 30723460 PMCID: PMC6349743 DOI: 10.3389/fmicb.2019.00012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/07/2019] [Indexed: 12/16/2022] Open
Abstract
The growing human population is currently facing an unprecedented challenge regarding global food sustainability. Thus, it is of paramount to maintain food production and quality while avoiding a negative impact on climate change and the environment at large. Along the food chain, several practices could compromise future food safety and human health. One example is the widespread use of antibiotics and disinfectants in dairy production, which has contributed to the current antibiotic resistance crisis. Moreover, the uncontrolled release of antimicrobials to the environment poses a significant threat to natural ecosystems. For these reasons, research has recently focused on exploiting natural antimicrobials with the goal of achieving a safer and more sustainable dairy production chain. In this context, bacteriophages, viruses that infect bacteria, may become good allies to prevent and treat diseases in cattle, or be used as disinfectants in dairy facilities and as preservatives in dairy products. This review provides an overview of the current research regarding the use of phages as a global approach to reduce economic losses and food waste, while increasing food safety and reducing the environmental impact of food production. Our current understanding of progress, solutions, and future challenges in dairy production, processing, safety, waste processing, and quality assurance is also discussed.
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Affiliation(s)
| | | | | | - Pilar García
- Instituto de Productos Lácteos de Asturias (IPLA-CSIC), Villaviciosa, Spain
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111
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Akhidime ID, Saubade F, Benson PS, Butler JA, Olivier S, Kelly P, Verran J, Whitehead KA. The antimicrobial effect of metal substrates on food pathogens. FOOD AND BIOPRODUCTS PROCESSING 2019. [DOI: 10.1016/j.fbp.2018.09.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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112
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Alves D, Marques A, Milho C, Costa MJ, Pastrana LM, Cerqueira MA, Sillankorva SM. Bacteriophage ϕIBB-PF7A loaded on sodium alginate-based films to prevent microbial meat spoilage. Int J Food Microbiol 2018; 291:121-127. [PMID: 30496941 DOI: 10.1016/j.ijfoodmicro.2018.11.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/18/2018] [Accepted: 11/20/2018] [Indexed: 01/08/2023]
Abstract
Despite the recent advances achieved in food industries to fulfil the growing consumer demand for high quality and food safety, microbial contamination remains a serious issue. This study aimed to incorporate ϕIBB-PF7A bacteriophage (phage) onto sodium alginate-based films crosslinked with calcium chloride, to prevent poultry spoilage caused by Pseudomonas fluorescens. Films were prepared by casting and characterized in terms of phage loading, distribution, stability, release profile and antimicrobial performance. Results showed that phages were successfully incorporated as evidenced by their viability and homogeneous distribution within the films as assessed by microscopy. A decrease in phage viability was only detected after 8 weeks when stored under refrigerated conditions. Antimicrobial activity demonstrated that incorporated phages significantly impaired P. fluorescens growth. Films' antimicrobial efficacy was further demonstrated on chicken breast fillets artificially inoculated, decreasing 2Log P. fluorescens viable cell counts in the first two days and reductions were maintained up to 5 days of exposure (1 Log). These results highlight that phage incorporation onto sodium-alginate-based films constitutes a simple approach of preserving the antimicrobial activity of phages in a dried and insoluble format, that can further be applied in food industry for the prevention of microbial spoilage.
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Affiliation(s)
- Diana Alves
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Arlete Marques
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Catarina Milho
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Maria José Costa
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; INL-International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Lorenzo M Pastrana
- INL-International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Miguel A Cerqueira
- INL-International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Sanna Maria Sillankorva
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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113
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Dlamini BS, Montso PK, Kumar A, Ateba CN. Distribution of virulence factors, determinants of antibiotic resistance and molecular fingerprinting of Salmonella species isolated from cattle and beef samples: suggestive evidence of animal-to-meat contamination. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:32694-32708. [PMID: 30244441 DOI: 10.1007/s11356-018-3231-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Accepted: 09/13/2018] [Indexed: 06/08/2023]
Abstract
In this study, three hundred presumptive Salmonella strains isolated from cattle faeces and raw beef samples were subjected to both preliminary and confirmatory tests specific for Salmonella. PCR assays revealed that 100%, 20% and 26.7% of the isolates were positive for 16S rRNA, fliC and fljB gene fragments, respectively. Large proportions (62.4 to 94.3%) of these isolates were multiple antibiotic resistant (MAR) strains that were resistant to three or more antibiotics belonging to different classes. MAR phenotypes Ab1, Ab2, Ab3, Ab7, Ab8, Ab9, Ab26 and Ab27 were dominant among the isolates. Cluster analysis of antibiotic inhibition zone diameter data revealed two major clusters (clusters 1 and 2), and each cluster contained two sub-clusters (1A, 1B, 2A and 2B). PCR data revealed that 27.1% and 30.7% of the isolates possessed the spvC and invA virulent genes, respectively. There was a significant correlation between the possession of MAR phenotypes and virulent gene determinants. Analysis of restriction fragment length polymorphism (RFLP) of 16S rRNA gene fragments using EcoRI and HaeIII showed that large proportions of isolates from beef and cattle faeces produced similar genetic fingerprints. From these results, it is suggested that Salmonella species in cattle are transmitted to beef and, therefore, the consumption of undercooked beef could pose severe health complications on consumers. These findings provide baseline data that could be of great epidemiological importance and, thus, the need to utilise more sensitive typing tools in determining the genetic relatedness of isolates from different sources.
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Affiliation(s)
- Beauty Sicelo Dlamini
- Department of Microbiology, School of Biological Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa
| | - Peter Kotsoana Montso
- Department of Microbiology, School of Biological Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa
| | - Ajay Kumar
- Department of Microbiology, School of Biological Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa
| | - Collins Njie Ateba
- Department of Microbiology, School of Biological Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
- Food Security and Safety Niche Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
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114
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Amarillas L, Lightbourn‐Rojas L, Angulo‐Gaxiola AK, Basilio Heredia J, González‐Robles A, León‐Félix J. The antibacterial effect of chitosan‐based edible coating incorporated with a lytic bacteriophage against
Escherichia coli
O157:H7 on the surface of tomatoes. J Food Saf 2018. [DOI: 10.1111/jfs.12571] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Luis Amarillas
- Centro de Investigación en Alimentación y Desarrollo Culiacán Sinaloa Mexico
- Instituto de Investigación Lightbourn Chihuahua Mexico
| | | | | | - J. Basilio Heredia
- Centro de Investigación en Alimentación y Desarrollo Culiacán Sinaloa Mexico
| | - Arturo González‐Robles
- Centro de Investigación y de Estudios AvanzadosInstituto Politécnico Nacional Ciudad de México Mexico
| | - Josefina León‐Félix
- Centro de Investigación en Alimentación y Desarrollo Culiacán Sinaloa Mexico
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115
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González-Menéndez E, Fernández L, Gutiérrez D, Rodríguez A, Martínez B, García P. Comparative analysis of different preservation techniques for the storage of Staphylococcus phages aimed for the industrial development of phage-based antimicrobial products. PLoS One 2018; 13:e0205728. [PMID: 30308048 PMCID: PMC6181408 DOI: 10.1371/journal.pone.0205728] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 10/01/2018] [Indexed: 11/19/2022] Open
Abstract
Bacteriophages have been proven as effective antimicrobial agents in the treatment of infectious diseases and in other biocontrol applications including food preservation and disinfection. The extensive use of bacteriophages requires improved methodologies for medium- and long-term storage as well as for easy shipping. To this aim, we have determined the stability of four Staphylococcus phages (phiIPLA88, phiIPLA35, phiIPLA-RODI and phiIPLA-C1C) with antimicrobial potential at different temperatures (20°C/25°C, 4°C, -20°C, -80°C, -196°C) and during lyophilization (freeze drying) using several stabilizing additives (disaccharides, glycerol, sorbitol and skim milk). Differences between phages were observed at different temperatures (20°C/25°C, 4°C and -20°C), where phages were less stable. At lower temperatures (-80°C and -196°C), all phages showed good viability after 24 months regardless of the stabilizer. Differences between phages were also observed after lyophilization although the addition of skim milk yielded a dry powder with a stable titer after 24 months. As an alternative to facilitate storage and transportation, phage encapsulation has been also explored. Phage phiIPLA-RODI encapsulated in alginate capsules retained high viability when stored at 4°C for 6 months and at 20°C for 1 month. Moreover, the spray-dryer technique allowed obtaining dry powders containing viable encapsulated phages (phiIPLA-RODI and phiIPLA88) in both skim milk and trehalose for 12 months at 4°C. Storage of phages at 20°C was less effective; in fact, phiIPLA88 was stable for at least 12 months in trehalose but not in skim milk, while phiIPLA-RODI was stable only for 6 months in either stabilizer. These results suggest that encapsulated phages might be a suitable way for shipping phages.
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Affiliation(s)
- Eva González-Menéndez
- Departamento de Tecnología y Biotecnología de Productos Lácteos, Instituto de Productos Lácteos de Asturias–Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain
| | - Lucía Fernández
- Departamento de Tecnología y Biotecnología de Productos Lácteos, Instituto de Productos Lácteos de Asturias–Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain
| | - Diana Gutiérrez
- Departamento de Tecnología y Biotecnología de Productos Lácteos, Instituto de Productos Lácteos de Asturias–Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain
| | - Ana Rodríguez
- Departamento de Tecnología y Biotecnología de Productos Lácteos, Instituto de Productos Lácteos de Asturias–Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain
| | - Beatriz Martínez
- Departamento de Tecnología y Biotecnología de Productos Lácteos, Instituto de Productos Lácteos de Asturias–Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain
| | - Pilar García
- Departamento de Tecnología y Biotecnología de Productos Lácteos, Instituto de Productos Lácteos de Asturias–Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain
- * E-mail:
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116
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Bone S, Alum A, Markovski J, Hristovski K, Bar-Zeev E, Kaufman Y, Abbaszadegan M, Perreault F. Physisorption and chemisorption of T4 bacteriophages on amino functionalized silica particles. J Colloid Interface Sci 2018; 532:68-76. [PMID: 30077067 DOI: 10.1016/j.jcis.2018.07.107] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 11/16/2022]
Abstract
Bacteriophages, or phages, are receiving increasing interest as recognition tools for the design of bioactive surfaces. However, to maintain the activity of surface-bound phages, the immobilization strategy must provide the right orientation and not compromise the phages' integrity. The objectives of this study were to characterize the phage sorption capacity and the immobilized phage activity for aminated silica particles functionalized with T4 phages. Two functionalization strategies were compared; physisorption, based on electrostatic adhesion, and chemisorption, where the phage and the particle are coupled using a carbodiimide cross-linker. We report that chemisorption, at maximum adsorption conditions on 1 µm particles, yielded 16 functional phages per particle, which is 2.5 times more than by the physisorption method. Particle diameter is shown to have an important impact on phage attachment and 1.8 µm particles were found to have ∼4 times more phages per surface area than 0.5 µm particles. Higher surface coverage is attributed to the lower steric hindrance on bigger particles. These findings provide important guidelines for the design of phage-functionalized particles for environmental, biomedical, or sensing applications.
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Affiliation(s)
- Stephanie Bone
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, AZ, United States
| | - Absar Alum
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; National Science Foundation Water & Environmental Technology Center, United States
| | - Jasmina Markovski
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, AZ, United States; The Polytechnic School, Arizona State University, Mesa, AZ 85212, United States
| | - Kiril Hristovski
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, AZ, United States; The Polytechnic School, Arizona State University, Mesa, AZ 85212, United States
| | - Edo Bar-Zeev
- Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 8499000, Israel
| | - Yair Kaufman
- Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 8499000, Israel
| | - Morteza Abbaszadegan
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; National Science Foundation Water & Environmental Technology Center, United States
| | - François Perreault
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, AZ, United States.
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117
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Komora N, Bruschi C, Ferreira V, Maciel C, Brandão TRS, Fernandes R, Saraiva JA, Castro SM, Teixeira P. The protective effect of food matrices on Listeria lytic bacteriophage P100 application towards high pressure processing. Food Microbiol 2018; 76:416-425. [PMID: 30166169 DOI: 10.1016/j.fm.2018.07.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 06/19/2018] [Accepted: 07/02/2018] [Indexed: 12/13/2022]
Abstract
The application of lytic phages as biocontrol agents is emerging as a promising strategy towards elimination or reduction of foodborne pathogens in a variety of food products. This technology is particularly advantageous for minimally processed and ready-to-eat (RTE) foods. In this study, the potential use of Listex™ P100 combined with high hydrostatic pressure (HPP), to enhance the control of Listeria monocytogenes in food was evaluated. For that, the effect of three pressures (200, 300 or 400 MPa; 5 min, 10 °C) on phage P100 stability was tested when inoculated in six different matrices: phosphate buffered saline (PBS, pH 7.4); apple juice (pH 3.41); orange/carrot nectar (pH 3.54); UHT whole milk (pH 6.73); and, two traditional Portuguese fermented products, "Serra da Estrela" cheese (pH 5.66) and "Alheira", a meat sausage (pH 6.07). The results showed that treatment at 400 MPa reduced phage titres to below the detection level in all matrices, whereas at milder pressures the survival of the phage was matrix dependent. "Alheira", "Serra da Estrela" cheese and UHT whole milk were shown to be baroprotective matrices that support phage P100 application in HHP up to 300 MPa; however, an accentuated phage inactivation was observed in apple and orange/carrot nectar, which may be related to the acidic pH values of these matrices. The initial phage load did not affect the inactivation rate during HHP processing (300 MPa, 5 min, 10 °C) in PBS, cheese, sausage or milk matrices, and the phage titres were stable in these matrices during storage at 4 °C for 28 days for milk and 60 days for "Alheira" and "Serra da Estrela" cheese. In addition, a baroprotective effect on phage stability was observed when PBS was supplemented with reducing sugars, dextrin, casein, and tween 80. In conclusion, at mild HHP treatment, phage P100 remained active in specific matrices and seems to present potential to be added in non-thermal inactivation of L. monocytogenes.
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Affiliation(s)
- Norton Komora
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal
| | - Carolina Bruschi
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal
| | - Vânia Ferreira
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal
| | - Cláudia Maciel
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal
| | - Teresa R S Brandão
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal
| | - Rui Fernandes
- HEMS - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, 4200-135, Portugal
| | - Jorge A Saraiva
- QOPNA - Organic Chemistry, Natural Products and Food Stuffs, Chemistry Department, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Sónia Marília Castro
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal; QOPNA - Organic Chemistry, Natural Products and Food Stuffs, Chemistry Department, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Paula Teixeira
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal.
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118
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Harada LK, Silva EC, Campos WF, Del Fiol FS, Vila M, Dąbrowska K, Krylov VN, Balcão VM. Biotechnological applications of bacteriophages: State of the art. Microbiol Res 2018; 212-213:38-58. [DOI: 10.1016/j.micres.2018.04.007] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/16/2018] [Accepted: 04/25/2018] [Indexed: 02/06/2023]
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119
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Bacteriophage cocktail for biocontrol of Escherichia coli O157:H7: Stability and potential allergenicity study. PLoS One 2018; 13:e0195023. [PMID: 29763937 PMCID: PMC5953568 DOI: 10.1371/journal.pone.0195023] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 03/15/2018] [Indexed: 12/18/2022] Open
Abstract
Escherichia coli O157:H7 has become a global public health and a food safety problem. Despite the implementation of control strategies that guarantee the safety in various products, outbreaks persist and new alternatives are necessary to reduce this pathogen along the food chain. Recently, our group isolated and characterised lytic bacteriophages against E. coli O157:H7 with potential to be used as biocontrol agents in food. To this end, phages need certain requirements to allow their manufacture and application. The aim of this study was to determine the physical stability and allergenic potential of free and microencapsulated (ME) bacteriophage cocktails against E. coli O157:H7. In vitro and in vivo studies were performed to determine phage survival under different pH, gastrointestinal conditions, temperature and UV light intensities. Results showed that the stability of ME phages was significantly (P<0.05) higher than free phages after ultraviolet irradiation, pH conditions between 3 to 7, and exposure to temperatures between at -80°C and 70°C. Both formulations were highly sensitive to very low pH in simulated gastric fluid, but stable in bile salts. In vivo studies in mice confirmed these phages passed through the gastrointestinal tract and were excreted in faeces. In silico, full-length alignment analysis showed that all phage proteins were negative for allergenic potential, but different predicting criteria classified seven phage proteins with a very low probability to be an allergen. In conclusion, these data demonstrated that microencapsulation provided a greater stability to phage formulation under stress conditions and assure a more suitable commercial formulation for the biological control of E. coli O157:H7.
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120
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Harper DR. Criteria for Selecting Suitable Infectious Diseases for Phage Therapy. Viruses 2018; 10:v10040177. [PMID: 29621149 PMCID: PMC5923471 DOI: 10.3390/v10040177] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 03/30/2018] [Accepted: 03/30/2018] [Indexed: 12/18/2022] Open
Abstract
One of the main issues with phage therapy from its earliest days has been the selection of appropriate disease targets. In early work, when the nature of bacteriophages was unknown, many inappropriate targets were selected, including some now known to have no bacterial involvement whatsoever. More recently, with greatly increased understanding of the highly specific nature of bacteriophages and of their mechanisms of action, it has been possible to select indications with an increased chance of a successful therapeutic outcome. The factors to be considered include the characteristics of the infection to be treated, the characteristics of the bacteria involved, and the characteristics of the bacteriophages themselves. At a later stage all of this information then informs trial design and regulatory considerations. Where the work is undertaken towards the development of a commercial product it is also necessary to consider the planned market, protection of intellectual property, and the sourcing of funding to support the work. It is clear that bacteriophages are not a “magic bullet”. However, with careful and appropriate selection of a limited set of initial targets, it should be possible to obtain proof of concept for the many elements required for the success of phage therapy. In time, success with these initial targets could then support more widespread use.
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Affiliation(s)
- David R Harper
- Evolution Biotechnologies, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LZ, UK.
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121
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Ravensdale JT, Coorey R, Dykes GA. Integration of Emerging Biomedical Technologies in Meat Processing to Improve Meat Safety and Quality. Compr Rev Food Sci Food Saf 2018; 17:615-632. [PMID: 33350135 DOI: 10.1111/1541-4337.12339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/11/2018] [Accepted: 01/12/2018] [Indexed: 01/16/2023]
Abstract
Modern-day processing of meat products involves a series of complex procedures designed to ensure the quality and safety of the meat for consumers. As the size of abattoirs increases, the logistical problems associated with large-capacity animal processing can affect the sanitation of the facility and the meat products, potentially increasing transmission of infectious diseases. Additionally, spoilage of food from improper processing and storage increases the global economic and ecological burden of meat production. Advances in biomedical and materials science have allowed for the development of innovative new antibacterial technologies that have broad applications in the medical industry. Additionally, new approaches in tissue engineering and nondestructive cooling of biological specimens could significantly improve organ transplantation and tissue grafting. These same strategies may be even more effective in the preservation and protection of meat as animal carcasses are easier to manipulate and do not have the same stringent requirements of care as living patients. This review presents potential applications of emerging biomedical technologies in the food industry to improve meat safety and quality. Future research directions investigating these new technologies and their usefulness in the meat processing chain along with regulatory, logistical, and consumer perception issues will also be discussed.
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Affiliation(s)
- Joshua T Ravensdale
- School of Public Health, Curtin Univ., Kent Street, Perth, Western Australia, 6102, Australia.,Curtin Health Innovation Research Inst., Curtin Univ., Kent Street, Perth, Western Australia, 6102, Australia
| | - Ranil Coorey
- School of Public Health, Curtin Univ., Kent Street, Perth, Western Australia, 6102, Australia.,Curtin Health Innovation Research Inst., Curtin Univ., Kent Street, Perth, Western Australia, 6102, Australia
| | - Gary A Dykes
- School of Public Health, Curtin Univ., Kent Street, Perth, Western Australia, 6102, Australia.,Curtin Health Innovation Research Inst., Curtin Univ., Kent Street, Perth, Western Australia, 6102, Australia
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122
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Novel chitosan film embedded with liposome-encapsulated phage for biocontrol of Escherichia coli O157:H7 in beef. Carbohydr Polym 2017; 177:156-164. [DOI: 10.1016/j.carbpol.2017.08.137] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 08/30/2017] [Accepted: 08/30/2017] [Indexed: 11/24/2022]
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123
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Oladunjoye AO, Singh S, Ijabadeniyi OA. Trisodium phosphate enhanced phage lysis of Listeria monocytogenes growth on fresh-cut produce. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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124
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The diversity of beef safety: A global reason to strengthen our current systems. Meat Sci 2017; 132:59-71. [DOI: 10.1016/j.meatsci.2017.03.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 03/20/2017] [Accepted: 03/30/2017] [Indexed: 11/24/2022]
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125
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Boggione DM, Batalha LS, Gontijo MT, Lopez ME, Teixeira AV, Santos IJ, Mendonça RC. Evaluation of microencapsulation of the UFV-AREG1 bacteriophage in alginate-Ca microcapsules using microfluidic devices. Colloids Surf B Biointerfaces 2017; 158:182-189. [DOI: 10.1016/j.colsurfb.2017.06.045] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/21/2017] [Accepted: 06/27/2017] [Indexed: 02/07/2023]
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126
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Sadekuzzaman M, Yang S, Mizan MFR, Kim HS, Ha SD. Effectiveness of a phage cocktail as a biocontrol agent against L. monocytogenes biofilms. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.10.056] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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127
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Silva F, Domingues FC, Nerín C. Trends in microbial control techniques for poultry products. Crit Rev Food Sci Nutr 2017; 58:591-609. [PMID: 27438696 DOI: 10.1080/10408398.2016.1206845] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Fresh poultry meat and poultry products are highly perishable foods and high potential sources of human infection due to the presence of several foodborne pathogens. Focusing on the microbial control of poultry products, the food industry generally implements numerous preventive measures based on the Hazard Analysis and Critical Control Points (HACCP) food safety management system certification together with technological steps, such as refrigeration coupled to modified atmosphere packaging that are able to control identified potential microbial hazards during food processing. However, in recent years, to meet the demand of consumers for minimally processed, high-quality, and additive-free foods, technologies are emerging associated with nonthermal microbial inactivation, such as high hydrostatic pressure, irradiation, and natural alternatives, such as biopreservation or the incorporation of natural preservatives in packaging materials. These technologies are discussed throughout this article, emphasizing their pros and cons regarding the control of poultry microbiota and their effects on poultry sensory properties. The discussion for each of the preservation techniques mentioned will be provided with as much detail as the data and studies provided in the literature for poultry meat and products allow. These new approaches, on their own, have proved to be effective against a wide range of microorganisms in poultry meat. However, since some of these emergent technologies still do not have full consumer's acceptability and, taking into consideration the hurdle technology concept for poultry processing, it is suggested that they will be used as combined treatments or, more frequently, in combination with modified atmosphere packaging.
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Affiliation(s)
- Filomena Silva
- a CICS-UBI-Health Sciences Research Centre , University of Beira Interior , Covilhã , Portugal.,b I3A-Aragón Institute of Engineering Research , Zaragoza , Spain
| | - Fernanda C Domingues
- a CICS-UBI-Health Sciences Research Centre , University of Beira Interior , Covilhã , Portugal
| | - Cristina Nerín
- b I3A-Aragón Institute of Engineering Research , Zaragoza , Spain
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128
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Efficacy of potential phage cocktails against Vibrio harveyi and closely related Vibrio species isolated from shrimp aquaculture environment in the south east coast of India. Vet Microbiol 2017; 207:83-96. [PMID: 28757045 DOI: 10.1016/j.vetmic.2017.06.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 06/06/2017] [Accepted: 06/07/2017] [Indexed: 12/22/2022]
Abstract
A diverse set of novel phages infecting the marine pathogenic Vibrio harveyi was isolated from shrimp aquaculture environments in the south east coast of India. Based on initial screening, three phages with a broad host range revealed that the growth inhibition of phage is relatively specific to V. harveyi. They were also able to infect V. alginolyticus and V. parahemolyticus that belonged to the Harveyi clade species from shrimp pond and sea coast environment samples. However, the impact of these phages on their host bacterium are well understood; a one-step growth curve experiment and transmission electron microscope (TEM) revealed three phages grouped under the Myoviridae (VHM1 and VHM2); Siphoviridae (VHS1) family. These phages were further molecular characterized with respect to phage genomic DNA isolates. The randomly amplified polymorphic DNA (RAPD), restriction fragment length polymorphism (RFLP) digestion with HindIII, and major structural proteins were distinguished by sodium-dodecyl-sulfate polyacrylamide gel electrophoresis (SDS-PAGE) clearly indicated that all the phage isolates were different, even when they came from the same source, giving an insight into the diversity of phages. Evaluation of microcosm studies of Penaeus monodon larvae infected with V. harveyi (105 CFU mL-1) showed that larvae survival after 96 h in the presence of phage treatment at 109 PFU mL-1 was enhanced when compared with the control. The resolution in over survival highly recommended that this study provides the phage-based therapy which could be an innovative and eco-friendly solution against Vibrio disease in shrimp aquaculture and in the natural environment.
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129
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Prediction of Listeria monocytogenes ATCC 7644 growth on fresh-cut produce treated with bacteriophage and sucrose monolaurate by using artificial neural network. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2016.10.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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130
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Microencapsulation with alginate/CaCO 3: A strategy for improved phage therapy. Sci Rep 2017; 7:41441. [PMID: 28120922 PMCID: PMC5264180 DOI: 10.1038/srep41441] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 12/19/2016] [Indexed: 11/17/2022] Open
Abstract
Bacteriophages are promising therapeutic agents that can be applied to different stages of the commercial food chain. In this sense, bacteriophages can be orally administered to farm animals to protect them against intestinal pathogens. However, the low pH of the stomach, the activities of bile and intestinal tract enzymes limit the efficacy of the phages. This study demonstrates the utility of an alginate/CaCO3 encapsulation method suitable for bacteriophages with different morphologies and to yield encapsulation efficacies of ~100%. For the first time, a cocktail of three alginate/CaCO3-encapsulated bacteriophages was administered as oral therapy to commercial broilers infected with Salmonella under farm-like conditions. Encapsulation protects the bacteriophages against their destruction by the gastric juice. Phage release from capsules incubated in simulated intestinal fluid was also demonstrated, whereas encapsulation ensured sufficient intestinal retention of the phages. Moreover, the small size of the capsules (125–150 μm) enables their use in oral therapy and other applications in phage therapy. This study evidenced that a cocktail of the three alginate/CaCO3-encapsulated bacteriophages had a greater and more durable efficacy than a cocktail of the corresponding non-encapsulated phages in as therapy in broilers against Salmonella, one of the most common foodborne pathogen.
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131
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Oliveira H, Pinto G, Oliveira A, Oliveira C, Faustino MA, Briers Y, Domingues L, Azeredo J. Characterization and genome sequencing of a Citrobacter freundii phage CfP1 harboring a lysin active against multidrug-resistant isolates. Appl Microbiol Biotechnol 2016; 100:10543-10553. [PMID: 27683211 DOI: 10.1007/s00253-016-7858-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/29/2016] [Accepted: 09/13/2016] [Indexed: 01/26/2023]
Abstract
Citrobacter spp., although frequently ignored, is emerging as an important nosocomial bacterium able to cause various superficial and systemic life-threatening infections. Considered to be hard-to-treat bacterium due to its pattern of high antibiotic resistance, it is important to develop effective measures for early and efficient therapy. In this study, the first myovirus (vB_CfrM_CfP1) lytic for Citrobacter freundii was microbiologically and genomically characterized. Its morphology, activity spectrum, burst size, and biophysical stability spectrum were determined. CfP1 specifically infects C. freundii, has broad host range (>85 %; 21 strains tested), a burst size of 45 PFU/cell, and is very stable under different temperatures (-20 to 50 °C) and pH (3 to 11) values. CfP1 demonstrated to be highly virulent against multidrug-resistant clinical isolates up to 12 antibiotics, including penicillins, cephalosporins, carbapenems, and fluroquinoles. Genomically, CfP1 has a dsDNA molecule with 180,219 bp with average GC content of 43.1 % and codes for 273 CDSs. The genome architecture is organized into function-specific gene clusters typical for tailed phages, sharing 46 to 94 % nucleotide identity to other Citrobacter phages. The lysin gene encoding a predicted D-Ala-D-Ala carboxypeptidase was also cloned and expressed in Escherichia coli and its activity evaluated in terms of pH, ionic strength, and temperature. The lysine optimum activity was reached at 20 mM HEPES, pH 7 at 37 °C, and was able to significantly reduce all C. freundii (>2 logs) as well as Citrobacter koseri (>4 logs) strains tested. Interestingly, the antimicrobial activity of this enzyme was performed without the need of pretreatment with outer membrane-destabilizing agents. These results indicate that CfP1 lysin is a good candidate to control problematic Citrobacter infections, for which current antibiotics are no longer effective.
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Affiliation(s)
- Hugo Oliveira
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Graça Pinto
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Ana Oliveira
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Carla Oliveira
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | | | - Yves Briers
- Department of Biosystems, KU Leuven, Kasteelpark Arenberg 21, Box 2462, 3001, Leuven, Belgium.,Department of Applied Biosciences, Ghent University, Valentin Vaerwijckweg 1, 9000, Ghent, Belgium
| | - Lucília Domingues
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Joana Azeredo
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
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132
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Liu Y, Mi Z, Niu W, An X, Yuan X, Liu H, Wang Y, Feng Y, Huang Y, Zhang X, Zhang Z, Fan H, Peng F, Li P, Tong Y, Bai C. Potential of a lytic bacteriophage to disrupt Acinetobacter baumannii biofilms in vitro. Future Microbiol 2016; 11:1383-1393. [PMID: 27538011 DOI: 10.2217/fmb-2016-0104] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
AIM The ability of Acinetobacter baumannii to form biofilms and develop antibiotic resistance makes it difficult to control infections caused by this bacterium. In this study, we explored the potential of a lytic bacteriophage to disrupt A. baumannii biofilms. MATERIALS & METHODS The potential of the lytic bacteriophage to disrupt A. baumannii biofilms was assessed by performing electron microscopy, live/dead bacterial staining, crystal violet staining and by determining adenosine triphosphate release. RESULTS The bacteriophage inhibited the formation of and disrupted preformed A. baumannii biofilms. Results of disinfection assay showed that the lytic bacteriophage lysed A. baumannii cells suspended in blood or grown on metal surfaces. CONCLUSION These results suggest the potential of the lytic bacteriophage to disrupt A. baumannii biofilms.
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Affiliation(s)
- Yannan Liu
- Department of Graduate, Hebei North University, Zhangjiakou, Hebei 075000, China.,Department of Respiratory & Critical Care Diseases, 307th Hospital of PLA, Beijing 100071, China
| | - Zhiqiang Mi
- Department of Microbiological Omics and Bioinformatics, State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Wenkai Niu
- Department of Respiratory & Critical Care Diseases, 307th Hospital of PLA, Beijing 100071, China
| | - Xiaoping An
- Department of Microbiological Omics and Bioinformatics, State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Xin Yuan
- Department of Respiratory & Critical Care Diseases, 307th Hospital of PLA, Beijing 100071, China
| | - Huiying Liu
- Department of Respiratory & Critical Care Diseases, 307th Hospital of PLA, Beijing 100071, China
| | - Yong Wang
- Department of Respiratory & Critical Care Diseases, 307th Hospital of PLA, Beijing 100071, China
| | - Yuzhong Feng
- Department of Respiratory & Critical Care Diseases, 307th Hospital of PLA, Beijing 100071, China
| | - Yong Huang
- Department of Microbiological Omics and Bioinformatics, State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Xianglilan Zhang
- Department of Microbiological Omics and Bioinformatics, State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Zhiyi Zhang
- Department of Microbiological Omics and Bioinformatics, State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Hang Fan
- Department of Microbiological Omics and Bioinformatics, State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Fan Peng
- Department of Respiratory Medicine, the First Hospital of Changsha, Changsha, Hunan 410000, China
| | - Puyuan Li
- Department of Respiratory & Critical Care Diseases, 307th Hospital of PLA, Beijing 100071, China
| | - Yigang Tong
- Department of Microbiological Omics and Bioinformatics, State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Changqing Bai
- Department of Respiratory & Critical Care Diseases, 307th Hospital of PLA, Beijing 100071, China
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133
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Letchumanan V, Chan KG, Pusparajah P, Saokaew S, Duangjai A, Goh BH, Ab Mutalib NS, Lee LH. Insights into Bacteriophage Application in Controlling Vibrio Species. Front Microbiol 2016; 7:1114. [PMID: 27486446 PMCID: PMC4949243 DOI: 10.3389/fmicb.2016.01114] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 07/04/2016] [Indexed: 01/11/2023] Open
Abstract
Bacterial infections from various organisms including Vibrio sp. pose a serious hazard to humans in many forms from clinical infection to affecting the yield of agriculture and aquaculture via infection of livestock. Vibrio sp. is one of the main foodborne pathogens causing human infection and is also a common cause of losses in the aquaculture industry. Prophylactic and therapeutic usage of antibiotics has become the mainstay of managing this problem, however, this in turn led to the emergence of multidrug resistant strains of bacteria in the environment; which has raised awareness of the critical need for alternative non-antibiotic based methods of preventing and treating bacterial infections. Bacteriophages - viruses that infect and result in the death of bacteria - are currently of great interest as a highly viable alternative to antibiotics. This article provides an insight into bacteriophage application in controlling Vibrio species as well underlining the advantages and drawbacks of phage therapy.
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Affiliation(s)
- Vengadesh Letchumanan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala LumpurMalaysia
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Selangor Darul EhsanMalaysia
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala LumpurMalaysia
| | - Priyia Pusparajah
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul EhsanMalaysia
| | - Surasak Saokaew
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Selangor Darul EhsanMalaysia
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, PhayaoThailand
- Pharmaceutical Outcomes Research Center, Faculty of Pharmaceutical Sciences, Naresuan University, PhitsanulokThailand
| | - Acharaporn Duangjai
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, PhayaoThailand
- Division of Physiology, School of Medical Sciences, University of Phayao, PhayaoThailand
| | - Bey-Hing Goh
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Selangor Darul EhsanMalaysia
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, PhayaoThailand
| | - Nurul-Syakima Ab Mutalib
- UKM Medical Molecular Biology Institute, UKM Medical Centre, Universiti Kebangsaan Malaysia, Kuala LumpurMalaysia
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Selangor Darul EhsanMalaysia
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, PhayaoThailand
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134
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Phillips CA. Bacterial biofilms in food processing environments: a review of recent developments in chemical and biological control. Int J Food Sci Technol 2016. [DOI: 10.1111/ijfs.13159] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Carol A. Phillips
- University of Northampton; Boughton Green Road Northampton NN2 7AL UK
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135
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Seo J, Seo DJ, Oh H, Jeon SB, Oh MH, Choi C. Inhibiting the Growth of Escherichia coli O157:H7 in Beef, Pork, and Chicken Meat using a Bacteriophage. Korean J Food Sci Anim Resour 2016; 36:186-93. [PMID: 27194926 PMCID: PMC4869544 DOI: 10.5851/kosfa.2016.36.2.186] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/04/2016] [Accepted: 01/07/2016] [Indexed: 12/28/2022] Open
Abstract
This study aimed to inhibit Escherichia coli (E. coli) O157:H7 artificially contaminated in fresh meat using bacteriophage. Among 14 bacteriophages, the highly lytic bacteriophage BPECO19 strain was selected to inhibit E. coli O157:H7 in artificially contaminated meat samples. Bacteriophage BPECO19 significantly reduced E. coli O157:H7 bacterial load in vitro in a multiplicity of infection (MOI)-dependent manner. E. coli O157:H7 was completely inhibited only in 10 min in vitro by the treatment of 10,000 MOI BPECO19. The treatment of BPECO19 at 100,000 MOI completely reduced 5 Log CFU/cm(2) E. coli O157:H7 bacterial load in beef and pork at 4 and 8h, respectively. In chicken meat, a 4.65 log reduction of E. coli O157:H7 was observed at 4 h by 100,000 MOI. The treatment of single bacteriophage BPECO19 was an effective method to control E. coli O157:H7 in meat samples.
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Affiliation(s)
- Jina Seo
- Department of Food and Nutrition, Chung-Ang University, Anseong 17546, Korea
| | - Dong Joo Seo
- Department of Food and Nutrition, Chung-Ang University, Anseong 17546, Korea
| | - Hyejin Oh
- Department of Food and Nutrition, Chung-Ang University, Anseong 17546, Korea
| | - Su Been Jeon
- Department of Food and Nutrition, Chung-Ang University, Anseong 17546, Korea
| | - Mi-Hwa Oh
- National Institute of Animal Science, Rural Development Administration, Wonju 55365, Korea
| | - Changsun Choi
- Department of Food and Nutrition, Chung-Ang University, Anseong 17546, Korea; School of Food Science and Technology, Chung-Ang University, Anseong 17546, Korea
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136
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Gutiérrez D, Rodríguez-Rubio L, García P, Billington C, Premarante A, Rodríguez A, Martínez B. Phage sensitivity and prophage carriage in Staphylococcus aureus isolated from foods in Spain and New Zealand. Int J Food Microbiol 2016; 230:16-20. [PMID: 27111797 DOI: 10.1016/j.ijfoodmicro.2016.04.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 03/14/2016] [Accepted: 04/13/2016] [Indexed: 01/08/2023]
Abstract
Bacteriophages (phages) are a promising tool for the biocontrol of pathogenic bacteria, including those contaminating food products and causing infectious diseases. However, the success of phage preparations is limited by the host ranges of their constituent phages. The phage resistance/sensitivity profile of eighty seven Staphylococcus aureus strains isolated in Spain and New Zealand from dairy, meat and seafood sources was determined for six phages (Φ11, K, ΦH5, ΦA72, CAPSa1 and CAPSa3). Most of the S. aureus strains were sensitive to phage K (Myoviridae) and CAPSa1 (Siphoviridae) regardless of their origin. There was a higher sensitivity of New Zealand S. aureus strains to phages isolated from both Spain (ΦH5 and ΦA72) and New Zealand (CAPSa1 and CAPSa3). Spanish phages had a higher infectivity on S. aureus strains of Spanish dairy origin, while Spanish strains isolated from other environments were more sensitive to New Zealand phages. Lysogeny was more prevalent in Spanish S. aureus compared to New Zealand strains. A multiplex PCR reaction, which detected ΦH5 and ΦA72 sequences, indicated a high prevalence of these prophages in Spanish S. aureus strains, but were infrequently detected in New Zealand strains. Overall, the correlation between phage resistance and lysogeny in S. aureus strains was found to be weak.
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Affiliation(s)
- Diana Gutiérrez
- Instituto de Productos Lácteos de Asturias (IPLA-CSIC). Paseo Río Linares s/n, 33300 Villaviciosa, Asturias, Spain
| | - Lorena Rodríguez-Rubio
- Instituto de Productos Lácteos de Asturias (IPLA-CSIC). Paseo Río Linares s/n, 33300 Villaviciosa, Asturias, Spain
| | - Pilar García
- Instituto de Productos Lácteos de Asturias (IPLA-CSIC). Paseo Río Linares s/n, 33300 Villaviciosa, Asturias, Spain
| | - Craig Billington
- Food, Water and Environmental Microbiology Group, Institute of Environmental Science and Research, Christchurch Science Centre, Christchurch 8041, New Zealand
| | - Aruni Premarante
- Food, Water and Environmental Microbiology Group, Institute of Environmental Science and Research, Christchurch Science Centre, Christchurch 8041, New Zealand
| | - Ana Rodríguez
- Instituto de Productos Lácteos de Asturias (IPLA-CSIC). Paseo Río Linares s/n, 33300 Villaviciosa, Asturias, Spain
| | - Beatriz Martínez
- Instituto de Productos Lácteos de Asturias (IPLA-CSIC). Paseo Río Linares s/n, 33300 Villaviciosa, Asturias, Spain.
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137
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Ladero V, Gómez-Sordo C, Sánchez-Llana E, del Rio B, Redruello B, Fernández M, Martín MC, Alvarez MA. Q69 (an E. faecalis-Infecting Bacteriophage) As a Biocontrol Agent for Reducing Tyramine in Dairy Products. Front Microbiol 2016; 7:445. [PMID: 27092117 PMCID: PMC4820458 DOI: 10.3389/fmicb.2016.00445] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/18/2016] [Indexed: 11/13/2022] Open
Abstract
Biogenic amines (BAs) are low molecular weight nitrogenous compounds with biological activity, formed from amino acids by decarboxylation. BAs are naturally present in all living organisms playing essential roles. However, their accumulation in food through the metabolic activity of certain microorganisms constitutes a toxicological hazard. Among foods, cheeses accumulate some of the highest concentrations of BAs since they provide an ideal environment for their accumulation. Most of the methods proposed for reducing BAs in cheese, such as milk pasteurization, have not only failed to completely solve the problem, they also affect non-BA producing lactic acid bacteria, i.e., the bacteria that participate in the development of the organoleptic characteristics of cheese. Novel technologies specifically targeted against BA producers are therefore needed to control BA accumulation. Bacteriophages have been proposed as agents for specifically controlling the presence of foodborne pathogens in food. Due to its specificity, they could be used as a biotechnological tool targeted to reduce the population of BA-producing bacteria. The present work reports the isolation, from cheese, and the characterization of bacteriophage Q69, which infects specifically Enterococcus faecalis, the species mainly responsible of the accumulation of the BA tyramine in foods. Furthermore, its capacity to reduce the accumulation of tyramine in different conditions -including a model cheese- was proven. The obtained results open up the possibility of use bacteriophages to prevent BA accumulation in fermented foods.
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Affiliation(s)
- Victor Ladero
- Department of Technology and Biotechnology of Dairy Products, Dairy Research Institute, Instituto de Productos Lácteos de Asturias – Consejo Superior de Investigaciones Científicas (IPLA–CSIC)Villaviciosa, Spain
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138
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Vandenheuvel D, Lavigne R, Brüssow H. Bacteriophage Therapy: Advances in Formulation Strategies and Human Clinical Trials. Annu Rev Virol 2016; 2:599-618. [PMID: 26958930 DOI: 10.1146/annurev-virology-100114-054915] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Recently, a number of phage therapy phase I and II safety trials have been concluded, showing no notable safety concerns associated with the use of phage. Though hurdles for efficient treatment remain, these trials hold promise for future phase III clinical trials. Interestingly, most phage formulations used in these clinical trials are straightforward phage suspensions, and not much research has focused on the processing of phage cocktails in specific pharmaceutical dosage forms. Additional research on formulation strategies and the stability of phage-based drugs will be of key importance, especially with phage therapy advancing toward phase III clinical trials.
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Affiliation(s)
- Dieter Vandenheuvel
- Laboratory of Gene Technology, Katholieke Universiteit Leuven, 3000 Leuven, Belgium; ,
| | - Rob Lavigne
- Laboratory of Gene Technology, Katholieke Universiteit Leuven, 3000 Leuven, Belgium; ,
| | - Harald Brüssow
- Nestlé Research Center, Nestec Ltd., Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland;
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139
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Bacteriophage biocontrol in wastewater treatment. World J Microbiol Biotechnol 2016; 32:70. [DOI: 10.1007/s11274-016-2028-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 02/10/2016] [Indexed: 10/22/2022]
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140
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Kazi M, Annapure US. Bacteriophage biocontrol of foodborne pathogens. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2016; 53:1355-62. [PMID: 27570260 PMCID: PMC4984715 DOI: 10.1007/s13197-015-1996-8] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/04/2015] [Accepted: 08/07/2015] [Indexed: 11/26/2022]
Abstract
Bacteriophages are viruses that only infect bacterial cells. Phages are categorized based on the type of their life cycle, the lytic cycle cause lysis of the bacterium with the release of multiple phage particles where as in lysogenic phase the phage DNA is incorporated into the bacterial genome. Lysogeny does not result in lysis of the host. Lytic phages have several potential applications in the food industry as biocontrol agents, biopreservatives and as tools for detecting pathogens. They have also been proposed as alternatives to antibiotics in animal health. Two unique features of phage relevant for food safety are that they are harmless to mammalian cells and high host specificity, keeping the natural microbiota undisturbed. However, the recent approval of bacteriophages as food additives has opened the discussion about 'edible viruses'. This article reviews in detail the application of phages for the control of foodborne pathogens in a process known as "biocontrol".
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Affiliation(s)
- Mustafa Kazi
- Department of Food Engineering and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019 India
| | - Uday S. Annapure
- Department of Food Engineering and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019 India
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141
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Pabary R, Singh C, Morales S, Bush A, Alshafi K, Bilton D, Alton EWFW, Smithyman A, Davies JC. Antipseudomonal Bacteriophage Reduces Infective Burden and Inflammatory Response in Murine Lung. Antimicrob Agents Chemother 2016; 60:744-51. [PMID: 26574007 PMCID: PMC4750668 DOI: 10.1128/aac.01426-15] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 11/09/2015] [Indexed: 12/21/2022] Open
Abstract
As antibiotic resistance increases, there is a need for new therapies to treat infection, particularly in cystic fibrosis (CF), where Pseudomonas aeruginosa is a ubiquitous pathogen associated with increased morbidity and mortality. Bacteriophages are an attractive alternative treatment, as they are specific to the target bacteria and have no documented side effects. The efficacy of phage cocktails was established in vitro. Two P. aeruginosa strains were taken forward into an acute murine infection model with bacteriophage administered either prophylactically, simultaneously, or postinfection. The infective burden and inflammation in bronchoalveolar lavage fluid (BALF) were assessed at various times. With low infective doses, both control mice and those undergoing simultaneous phage treatment cleared P. aeruginosa infection at 48 h, but there were fewer neutrophils in BALF of phage-treated mice (median, 73.2 × 10(4)/ml [range, 35.2 to 102.1 × 10(4)/ml] versus 174 × 10(4)/ml [112.1 to 266.8 × 10(4)/ml], P < 0.01 for the clinical strain; median, 122.1 × 10(4)/ml [105.4 to 187.4 × 10(4)/ml] versus 206 × 10(4)/ml [160.1 to 331.6 × 10(4)/ml], P < 0.01 for PAO1). With higher infective doses of PAO1, all phage-treated mice cleared P. aeruginosa infection at 24 h, whereas infection persisted in all control mice (median, 1,305 CFU/ml [range, 190 to 4,700 CFU/ml], P < 0.01). Bacteriophage also reduced CFU/ml in BALF when administered postinfection (24 h) and both CFU/ml and inflammatory cells in BALF when administered prophylactically. A reduction in soluble inflammatory cytokine levels in BALF was also demonstrated under different conditions. Bacteriophages are efficacious in reducing both the bacterial load and inflammation in a murine model of P. aeruginosa lung infection. This study provides proof of concept for future clinical trials in patients with CF.
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Affiliation(s)
- Rishi Pabary
- National Heart and Lung Institute, Imperial College London, London, United Kingdom Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
| | - Charanjit Singh
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Sandra Morales
- Special Phage Services, Brookvale, New South Wales, Australia
| | - Andrew Bush
- National Heart and Lung Institute, Imperial College London, London, United Kingdom Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
| | - Khalid Alshafi
- Department of Microbiology, Royal Brompton Hospital, London, United Kingdom
| | - Diana Bilton
- Adult Cystic Fibrosis Unit, Royal Brompton Hospital, London, United Kingdom
| | - Eric W F W Alton
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | | | - Jane C Davies
- National Heart and Lung Institute, Imperial College London, London, United Kingdom Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
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142
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Cantas L, Suer K, Guler E, Imir T. High Emergence of ESBL-Producing E. coli Cystitis: Time to Get Smarter in Cyprus. Front Microbiol 2016; 6:1446. [PMID: 26793167 PMCID: PMC4710751 DOI: 10.3389/fmicb.2015.01446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 12/04/2015] [Indexed: 01/09/2023] Open
Abstract
Background: Widespread prevalence of extended-spectrum βeta-lactamase producing Escherichia coli (ESBL-producing E. coli) limits the infection therapeutic options and is a growing global health problem. In this study our aim was to investigate the antimicrobial resistance profile of the E. coli in hospitalized and out-patients in Cyprus. Results: During the period 2010–2014, 389 strains of E. coli were isolated from urine samples of hospitalized and out-patients in Cyprus. ESBL-producing E. coli, was observed in 53% of hospitalized and 44% in out-patients, latest one being in 2014. All ESBL-producing E. coli remained susceptible to amikacin, carbapenems except ertapenem (in-patients = 6%, out-patients = 11%). Conclusion: High emerging ESBL-producing E. coli from urine samples in hospitalized and out-patients is an extremely worrisome sign of development of untreatable infections in the near future on the island. We therefore emphasize the immediate need for establishment of optimal therapy guidelines based on the country specific surveillance programs. The need for new treatment strategies, urgent prescription habit changes and ban of over-the-counter sale of antimicrobials at each segment of healthcare services is also discussed in this research.
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Affiliation(s)
- Leon Cantas
- MicroLabHammerfest, Norway; Department of Medical Microbiology, Faculty of Medicine, Near East UniversityNicosia, Cyprus
| | - Kaya Suer
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Near East University Nicosia, Cyprus
| | - Emrah Guler
- Department of Medical Microbiology, Faculty of Medicine, Near East University Nicosia, Cyprus
| | - Turgut Imir
- Department of Medical Microbiology, Faculty of Medicine, Near East University Nicosia, Cyprus
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143
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Li M, Li M, Lin H, Wang J, Jin Y, Han F. Characterization of the novel T4-like Salmonella enterica bacteriophage STP4-a and its endolysin. Arch Virol 2015; 161:377-84. [PMID: 26563319 DOI: 10.1007/s00705-015-2647-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 10/12/2015] [Indexed: 12/20/2022]
Abstract
While screening for new antimicrobial agents for multidrug-resistant Salmonella enterica, the novel lytic bacteriophage STP4-a was isolated and characterized. Phage morphology revealed that STP4-a belongs to the family Myoviridae. Bacterial challenge assays showed that different serovars of Salmonella enterica were susceptible to STP4-a infection. The genomic characteristics of STP4-a, containing 159,914 bp of dsDNA with an average GC content of 36.86 %, were determined. Furthermore, the endolysin of STP4-a was expressed and characterized. The novel endolysin, LysSTP4, has hydrolytic activity towards outer-membrane-permeabilized S. enterica and Escherichia coli. These results provide essential information for the development of novel phage-based biocontrol agents against S. enterica.
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Affiliation(s)
- Meng Li
- Food Safety Laboratory, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Mengzhe Li
- Food Safety Laboratory, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Hong Lin
- Food Safety Laboratory, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Jingxue Wang
- Food Safety Laboratory, Ocean University of China, Qingdao, 266003, People's Republic of China.
| | - Yanqiu Jin
- Food Safety Laboratory, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Feng Han
- Food Safety Laboratory, Ocean University of China, Qingdao, 266003, People's Republic of China
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144
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Patteson AE, Gopinath A, Goulian M, Arratia PE. Running and tumbling with E. coli in polymeric solutions. Sci Rep 2015; 5:15761. [PMID: 26507950 PMCID: PMC4938119 DOI: 10.1038/srep15761] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 09/29/2015] [Indexed: 12/24/2022] Open
Abstract
Run-and-tumble motility is widely used by swimming microorganisms including numerous prokaryotic and eukaryotic organisms. Here, we experimentally investigate the run-and-tumble dynamics of the bacterium E. coli in polymeric solutions. We find that even small amounts of polymer in solution can drastically change E. coli dynamics: cells tumble less and their velocity increases, leading to an enhancement in cell translational diffusion and a sharp decline in rotational diffusion. We show that suppression of tumbling is due to fluid viscosity while the enhancement in swimming speed is mainly due to fluid elasticity. Visualization of single fluorescently labeled DNA polymers reveals that the flow generated by individual E. coli is sufficiently strong to stretch polymer molecules and induce elastic stresses in the fluid, which in turn can act on the cell in such a way to enhance its transport. Our results show that the transport and spread of chemotactic cells can be independently modified and controlled by the fluid material properties.
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Affiliation(s)
- A E Patteson
- Department of Mechanical Engineering &Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104
| | - A Gopinath
- Department of Mechanical Engineering &Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104.,School of Engineering, University of California Merced, Merced, CA 95343
| | - M Goulian
- Department of Biology, University of Pennsylvania, Philadelphia, PA 19104
| | - P E Arratia
- Department of Mechanical Engineering &Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104
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145
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Choińska-Pulit A, Mituła P, Śliwka P, Łaba W, Skaradzińska A. Bacteriophage encapsulation: Trends and potential applications. Trends Food Sci Technol 2015. [DOI: 10.1016/j.tifs.2015.07.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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146
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Oliveira H, Sillankorva S, Merabishvili M, Kluskens LD, Azeredo J. Unexploited opportunities for phage therapy. Front Pharmacol 2015; 6:180. [PMID: 26441644 PMCID: PMC4561355 DOI: 10.3389/fphar.2015.00180] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 08/11/2015] [Indexed: 11/13/2022] Open
Affiliation(s)
- Hugo Oliveira
- Laboratório de Investigação em Biofilmes Rosário Oliveira, Centre of Biological Engineering, University of MinhoBraga, Portugal
| | - Sanna Sillankorva
- Laboratório de Investigação em Biofilmes Rosário Oliveira, Centre of Biological Engineering, University of MinhoBraga, Portugal
| | - Maia Merabishvili
- Laboratory for Molecular and Cellular Technology, Queen Astrid Military HospitalBrussels, Belgium
| | - Leon D. Kluskens
- Laboratório de Investigação em Biofilmes Rosário Oliveira, Centre of Biological Engineering, University of MinhoBraga, Portugal
| | - Joana Azeredo
- Laboratório de Investigação em Biofilmes Rosário Oliveira, Centre of Biological Engineering, University of MinhoBraga, Portugal
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147
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Abstract
ABSTRACT Bacteriophages (or phages) are viruses which infect and kill bacteria. They are ubiquitous in the environment but are inert in humans and animals. For almost 100 years they have been used therapeutically but in the West the ready availability of antibiotics has meant that they have only been used sporadically and no commercial therapeutic products are currently available. The looming antibiotic crisis means that there is now a renewed interest in phages; a number of companies are producing nontherapeutic phage products (such as food treatment sprays), some clinical trial data are available and other trials are close to commencing. Here, I review the current state of phage therapy, with reference to the historical context and discuss why the time is now right for this forgotten cure to be revisited.
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Affiliation(s)
- Jason R Clark
- Novolytics Ltd, ITAC-Bio, Daresbury Science & Innovation Campus, Warrington, WA4 4AD, UK
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148
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Rahal EA, Fadlallah SM, Nassar FJ, Kazzi N, Matar GM. Approaches to treatment of emerging Shiga toxin-producing Escherichia coli infections highlighting the O104:H4 serotype. Front Cell Infect Microbiol 2015; 5:24. [PMID: 25853096 PMCID: PMC4364364 DOI: 10.3389/fcimb.2015.00024] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 03/04/2015] [Indexed: 11/13/2022] Open
Abstract
Shiga toxin-producing Escherichia coli (STEC) are a group of diarrheagenic bacteria associated with foodborne outbreaks. Infection with these agents may result in grave sequelae that include fatality. A large number of STEC serotypes has been identified to date. E. coli serotype O104:H4 is an emerging pathogen responsible for a 2011 outbreak in Europe that resulted in over 4000 infections and 50 deaths. STEC pathogenicity is highly reliant on the production of one or more Shiga toxins that can inhibit protein synthesis in host cells resulting in a cytotoxicity that may affect various organ systems. Antimicrobials are usually avoided in the treatment of STEC infections since they are believed to induce bacterial cell lysis and the release of stored toxins. Some antimicrobials have also been reported to enhance toxin synthesis and production from these organisms. Various groups have attempted alternative treatment approaches including the administration of toxin-directed antibodies, toxin-adsorbing polymers, probiotic agents and natural remedies. The utility of antibiotics in treating STEC infections has also been reconsidered in recent years with certain modalities showing promise.
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Affiliation(s)
- Elias A Rahal
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Sukayna M Fadlallah
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Farah J Nassar
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Natalie Kazzi
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Ghassan M Matar
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut Beirut, Lebanon
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149
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KUSMIATUN ANIK, RUSMANA IMAN, BUDIARTI SRI. Characterization of Bacteriophage Specific to Bacillus pumilus from Ciapus River in Bogor, West Java, Indonesia. HAYATI JOURNAL OF BIOSCIENCES 2015. [DOI: 10.4308/hjb.22.1.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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150
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Żaczek M, Weber-Dąbrowska B, Górski A. Phages in the global fruit and vegetable industry. J Appl Microbiol 2014; 118:537-56. [DOI: 10.1111/jam.12700] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 11/02/2014] [Accepted: 11/15/2014] [Indexed: 01/06/2023]
Affiliation(s)
- M. Żaczek
- Laboratory of Bacteriophages; Ludwik Hirszfeld Institute of Immunology and Experimental Therapy; Polish Academy of Sciences; Wrocław Poland
| | - B. Weber-Dąbrowska
- Laboratory of Bacteriophages; Ludwik Hirszfeld Institute of Immunology and Experimental Therapy; Polish Academy of Sciences; Wrocław Poland
- Phage Therapy Unit; Ludwik Hirszfeld Institute of Immunology and Experimental Therapy; Polish Academy of Sciences; Wrocław Poland
| | - A. Górski
- Laboratory of Bacteriophages; Ludwik Hirszfeld Institute of Immunology and Experimental Therapy; Polish Academy of Sciences; Wrocław Poland
- Phage Therapy Unit; Ludwik Hirszfeld Institute of Immunology and Experimental Therapy; Polish Academy of Sciences; Wrocław Poland
- Department of Clinical Immunology; Transplantation Institute; Medical University of Warsaw; Warsaw Poland
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