ArticleMethods and protocols2026
Detection of Certain Berries in Difficult Samples by Singleplex and Multiplex Real-Time PCR-HRM: A Case Study of Pitfalls.
Article in Methods and protocols, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Singleplex and multiplex real-time PCR-HRM (polymerase chain reaction with high resolution melting), both with specific and non-specific amplicon detection, are used for a wide range of applications, from clinical diagnostics to food authentication. However, their results can be influenced by the quality of the template DNA and composition of the reaction mixture. The methods used for the analysis of these results then influence the conclusions drawn. In this work we present an example from our laboratory practice, where the results of singleplex and multiplex real-time PCR differed, despite using the same reaction conditions, primers and analyzed plant material. We show the influence of a singleplex and multiplex PCR setup on the results, as well as the influence of template contamination on the melting behaviour of amplicons. We also discuss the usefulness of cluster analysis for the clarification of real-time PCR-HRM results which appear unclear when only melting and difference curves or similarity scores are used for the analysis of these results. We provide a discussion of problems which we encountered during an analysis of commercial teas and which should be considered by researchers new to PCR-based analysis of plant material, especially if the studied material is rich in various contaminants.
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