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Evaluation of four protocols for the detection and isolation of thermophilic Campylobacter from different matrices

Investigation article published in Journal of Applied Microbiology

July 1st, 2012

To identify the optimal method for detection of thermophilic Campylobacter at various stages in the food chain, three culture-dependent (direct plating, Bolton and Preston enrichment) and one molecular method (qPCR) were compared for three matrices: poultry faeces (n=38), neck skin (n=38) and packed fresh meat (n=38). Methods and Results: Direct plating was compared to enrichment with either Bolton broth (ISO 10272:2006-1) or Preston broth, followed by culture on two selective agars: modified Charcoal Cefoperazone Desoxycholate Agar (mCCDA) and Campyfood agar (CFA). Direct plating on CFA provided the highest number of positive samples for faeces and neck skin samples. Enrichment of meat samples in Preston followed by plating on mCCDA gave significantly higher number of positives than the recommended ISO method. Real-time qPCR yielded the highest number of positive samples. Conclusion:  Direct plating on CFA is optimal for Campylobacter isolation from highly contaminated samples such as faeces or neck skin. When enrichment is required for less contaminated samples such as poultry meat, Preston broth is the best choice. The maximum of detectable cells predicted by qPCR is a sensitive and powerful evaluation tool. Significance and impact of study:  The recommended ISO protocol had the least sensitivity and application of this method could result in underreporting. We detected a high prevalence of Campylobacter on packed meat to be distributed, which suggests this is still a significant risk for consumers




Ugarte-Ruiz M., Gomez S., Porrero MC., Alvarez J., Garcia M., Comeron MC., Wassenaar TM. and Dominguez L..




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Evaluation of four protocols for the detection and isolation of thermophilic Campylobacter from different matrices

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Evaluation of four protocols for the detection and isolation of thermophilic Campylobacter from different matrices


Participants:

Universidad ComplutenseServicio de Zoonosis de Transmisión Alimentaria y Resistencia a Antimicrobianos (ZTA). Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM).

Universidad ComplutenseDepartamento de Sanidad Animal. Facultad de Veterinaria. Universidad Complutense (UCM).

Molecular Microbiology and Genomics Consultants.

Comunidad de MadridInstituto Ramón y Cajal de Investigación Sanitaria (IRYCIS). Universidad Complutense (UCM). Universidad Autónoma de Madrid (UAM). Universidad de Alcalá (UAH). Salud Madrid. Comunidad de Madrid.







Journal of Applied Microbiology
FACTOR YEAR Q
2.196 2012

NLMID: 9706280

PMID: 22533742

ISSN: 1364-5072



TITLE: Evaluation of four protocols for the detection and isolation of thermophilic Campylobacter from different matrices


JOURNAL: J. Appl. Microbiol.


NUMERACIÓN: 113(1):200-8


AÑO: 2012


PUBLISHER: Published for the Society for Applied Bacteriology by Blackwell Science


AUTHORS: Ugarte-Ruiz M., Gomez S., Porrero MC., Alvarez J., Garcia M., Comeron MC., Wassenaar TM. and Dominguez L..


VISAVET PARTICIPANTS


First
María Ugarte Ruiz
2nd
Susana Gómez Barrero
4th
Julio Álvarez Sánchez
5th
María García Martín
Last
Lucas Domínguez Rodríguez

DOI: https://doi.org/ 10.1111/j.1365-2672.2012.05323.x


CITE THIS PUBLICATION:

Ugarte-Ruiz M., Gomez S., Porrero MC., Alvarez J., Garcia M., Comeron MC., Wassenaar TM. and Dominguez L. Evaluation of four protocols for the detection and isolation of thermophilic Campylobacter from different matrices. Journal of Applied Microbiology. 113(1):200-8. 2012. (A). ISSN: 1364-5072. DOI: 10.1111/j.1365-2672.2012.05323.x


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