Enterococci In Foods
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Enterococci In Foods
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Author : Wilhelm Holzapfel
language : en
Publisher:
Release Date : 2003
Enterococci In Foods written by Wilhelm Holzapfel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Enterococci In Food Fermentations
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Author : T. M. Cogan
language : en
Publisher:
Release Date : 2001-01-01
Enterococci In Food Fermentations written by T. M. Cogan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-01-01 with Cheese categories.
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Author :
language : en
Publisher:
Release Date : 1998
written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
The Enterococci
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Author : Michael S. Gilmore
language : en
Publisher:
Release Date : 2002
The Enterococci written by Michael S. Gilmore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Drug resistance in microorganisms categories.
This text provides comprehensive coverage of the latest research on enterococci.
Horizontal Transfer Of Vana Mediated Resistance Among Commensal And Streptogramin Resistant Enterococci Derived From Multi Component Food Systems
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Author :
language : en
Publisher:
Release Date : 2007
Horizontal Transfer Of Vana Mediated Resistance Among Commensal And Streptogramin Resistant Enterococci Derived From Multi Component Food Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Antibiotics categories.
The enterococci are commensal lactic acid bacteria of the gastrointestinal tract of humans and animals, and are ubiquitous in nature. They have a long history of use as starter cultures in European fermented foods and are used commercially as probiotics. Within the past two decades, vancomycin-resistant enterococci (VRE) have emerged as significant nosocomial pathogens, treatable with few antibiotics. In the US, the agricultural use of virginiamycin, a streptogramin growth promoter, has raised concern regarding cross-resistance among VRE to the clinical streptogramin quinupristin-dalfopristin. Horizontal transfer of antibiotic resistance genes is mediated by aggregation substances and sex pheromones that induce conjugation, but the role of these virulence factors in enterococci of food origin is largely unknown. The potential for enterococci isolated from multi-component creamy deli salads (including macaroni, potato, chicken, and seafood) to harbor and disseminate the high-level vancomycin resistance gene vanA among more virulent native enterococci was investigated. Initial filter mating between a clinical Enterococcus faecalis isolate carrying vanA and a commensal, vancomycin susceptible E. faecium salad recipient that harbored no virulence genes was demonstrated at a frequency of 10-8 per recipient. The rate of secondary transfer of vanA by this transconjugant to both food and animal enterococci carrying the streptogramin resistance genes vatE or vatD and/or the selected virulence genes agg, gelE, cpd, and efa increased three log-fold. In primary and secondary matings, multiple antibiotic resistance patterns increased for all transconjugants. Additionally, expression of vanA in the absence of selective antibiotic pressure was determined by reverse transcriptase-PCR and found to occur in the primary transconjugant but not in the donor. Results demonstrate that foodborne commensal enterococci from multi-component foods can receive and disseminate vanA to food and animal enterococci that harbor streptogramin resistance and/or virulence genes. The potential for transfer events to occur among commensal and virulent enterococci in foods must be considered for the safe use of Enterococcus in starter cultures and probiotics.
Recommended Methods For The Microbiological Examination Of Foods
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Author : American Public Health Association. Committee on Evaluation and Standards. Coordinating Committee on Laboratory Methods. Subcommittee on Methods for the Microbiological Examination of Foods
language : en
Publisher:
Release Date : 1958
Recommended Methods For The Microbiological Examination Of Foods written by American Public Health Association. Committee on Evaluation and Standards. Coordinating Committee on Laboratory Methods. Subcommittee on Methods for the Microbiological Examination of Foods and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Food categories.
Exploring The Value Of Enterococci As Alternative Indicator Organisms In Parmesan Cheese And Poultry Carcasses
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Author : Joyce Catherine N. Reyes
language : en
Publisher:
Release Date : 1999
Exploring The Value Of Enterococci As Alternative Indicator Organisms In Parmesan Cheese And Poultry Carcasses written by Joyce Catherine N. Reyes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Enterococcus And Safety
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Author : Teresa Semedo-Lemsaddek
language : en
Publisher: Nova Science Publishers
Release Date : 2012
Enterococcus And Safety written by Teresa Semedo-Lemsaddek and has been published by Nova Science Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Enterococcal infections categories.
The book "Enterococcus and Safety" is presented as a journey to the enterococcal world. The genus Enterococcus comprises a wide variety of both pathogenic and commensal gram-positive bacteria. These micro-organisms are common constituents of fermented products such as traditionally manufactured cheeses and dry sausages, in which it is believed that they contribute to the development of organoleptic characteristics. In addition, enterococci are also used to extend the shelf life and improve the hygienic safety of foodstuffs because they produce bacteriocins which may have a promising potential in bio-preservation and in the enhancement of the hygienic quality of food products. However, in recent years enterococci have emerged as serious pathogens in hospital environments, where vancomycin-resistant strains are gaining major importance. This dual role of enterococci as beneficial organisms or opportunistic pathogens leads to an increasing need for studies intended to discriminate between food-grade and pathogenic strains.
Comparative Study Of Direct Plating Media For The Enumeration Of Enterococci In Frozen Foods
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Author : Mary Katherine Bayfield
language : en
Publisher:
Release Date : 1963
Comparative Study Of Direct Plating Media For The Enumeration Of Enterococci In Frozen Foods written by Mary Katherine Bayfield and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Food categories.
Genetic Diversity Vancomycin Resistance Vir Lence Of Enterococci
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Author : Terkuran Mevhibe
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2015-03-10
Genetic Diversity Vancomycin Resistance Vir Lence Of Enterococci written by Terkuran Mevhibe and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-10 with categories.
Antibiotic resistance of the bacteria has become the most important issue all over the world. This is not only important in medical area but is also questioned in food production industry. Enterococci are more beneficial effective bacteria in food industry due to their esterolytic, lipolytic activities in cheese, sausage and other fermented foods. In addition, they are used as starter cultures in fermented foods and used as probiotic in human and animal health. However, they are not considered GRAS (Generally Recognized As Safe) microorganisms in food production sector because of their acquired antibiotic especially vancomycin resistance abilities and virulence genes as well as being the causes of untreatable nosocomial infections in hospital settings. This book provides, genetic diversity between food and clinical based enterococci to understand dissemination of vancomycin resistance. In addition, the correlations between virulence genes and vancomycin resistance have analysed in this book. The analysis may help some light on the role of food enterococci related dissemination of virulence genes and vancomycin resistance for professionals both food and clinical microbiologists."