Details

Autor(en) / Beteiligte

• Klančnik, Anja
• Toplak, Nataša
• Kovač, Minka
• Marquis, Hélène
• Jeršek, Barbara

Titel

Quantification of Listeria monocytogenes cells with digital PCR and their biofilm cells with real-time PCR

Ist Teil von

• Journal of microbiological methods, 2015-11, Vol.118, p.37-41

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2015

Quelle

ScienceDirect

Beschreibungen/Notizen

• The purpose of this study was to develop a PCR-based method for quantification of Listeria monocytogenes adhesion in microtitre plates. We optimized isolation of DNA in the microtitre plates using cell lysis, ultrasound treatment, heating, and centrifugation of the lysate. Digital PCR was applied for quantification of L. monocytogenes DNA that was used for construction of the standard curve, and real-time PCR was used for quantification of the attached L. monocytogenes cells. This PCR-based method was applied to quantify different strains of L. monocytogenes at different times of biofilm formation, and to study the anti-adhesive actions of natural bioactive substances (epigallocatechin gallate, (−)-α-pinene). The results show that the PCR-based method developed here can be widely used as a novel approach for adhesion assays and biofilm research. •Evaluation of Listeria monocytogenes adhesion with novel PCR-based method•DNA isolation in microtitre plate•Digital PCR was used to quantify the DNA used for the standard curve.•Real-time PCR was applied for quantification of L. monocytogenes biofilm cells.