method and automatic extraction of nucleic acids from complex mixtures

摘要

The invention relates to a method for extracting nucleic acids of microorganisms contained in a complex mixture, particularly a food mixture, comprising at least the following steps: the mixture (10) is clarified; the microorganisms are retained on a filtering cartridge (12); said microorganisms are lysed (14); the nucleic acids are recovered (16), concentrated, and purified (18). The invention also relates to a filtering cartridge and an apparatus used for carrying out the inventive extraction method. Also disclosed is a device for extracting, detecting, and if necessary quantifying the nucleic acids of microorganisms contained in a complex mixture.