27th July 2018  Content supplied by: Technical Service Consultants Ltd

Chromogenic Detection of Pathogenic Listeria from Environment and Surfaces

SwabSURE ListeriaP is an innovative colour-change Listeria testing product for environmental and food contact surfaces. The self-contained test permits differentiation of pathogenic Listeria monocytogenes and Listeiria ivanovii from other commensal microorganisms including Listeria innocua.

In tests, this highly sensitive and specific method reliably recovered pathogenic Listeria whilst excluding Bacillus spp., Enterococcus spp., Micrococcus spp., Klebsiella spp. and other spoilage organisms by using a combination of antibiotics and inhibitory compounds.

ListeriaP eliminates false positives - a common failure with other traditional methods.

Features and Benefits of SwabSURE ListeriaP:

  • ISO 18593:200 compliant system externally validated by Campden BRI
  • Foam swab open matrix enhances recovery and release of sample ensuring accurate results
  • Neutralising buffer provides inactivation of QACs, phenols, peroxides and other sanitisers increasing the viability of the sample
  • False positives are eliminated by usage of chromogenic media for easy identification
  • Simple and quick to use with no mixing of reagents or multiple steps

Easy to Use Detect Listeria by colour change in swabs

  • Remove the premoistened swab from tube and sample by rubbing the swab across defined area
  • On completion of sample insert swab back into the tube and transport to the laboratory as quicly as possible
  • Remove swab and insert into media type and break the swab at the breakpoint by pressing against the side of the tube, ensure to mix well.
  • Place tubes into a rack and incubate horizontally at 37C for 24-48 hours.
  • Check results after 24 - 48 hours. Change of media colour to turquoise blue indicates presence of L. monocytogenes or L. ivanovii.

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Date Published: 27th July 2018

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