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Comparison of three methods of DNA extraction from cold-smoked salmon and impact of physical treatments ArchiMer
Giacomazzi, Sophie; Leroi, Francoise; Joffraud, Jean-jacques.
Aims: To compare three bacterial DNA extraction procedures on cold-smoked salmon (CSS) and assess the impact on their efficiency of two physical treatments of the food matrix, ionizing irradiation and freezing. Methods and Results: As molecular methods for bacterial detection have become an important analytical tool, we compared bacterial DNA extraction procedures on CSS. Working with frozen and irradiated CSS, we obtained negative responses from samples known to be highly contaminated. Thus, we decided to study the impact of these two physical treatments on bacterial DNA extraction procedures. The efficiency of bacterial DNA extraction directly from the fish matrix suspension was measured by an rpoB PCR-based reaction. The results demonstrated that the...
Tipo: Text Palavras-chave: RpoB gene; PCR; Ionizing irradiation; Freezing; DNA extraction; Cold smoked salmon.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-1106.pdf
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