The invention discloses an extraction method of
bacterial RNA (Ribonucleic Acid). The extraction method comprises the following steps: firstly, collecting
thallus and then putting the
thallus into a
centrifuge tube; secondly, adding 50 to 200mu l of EB
buffer solution containing
lysozyme into the
centrifuge tube for thoroughly resuspending the
thallus; thirdly, adding 200 to 600mu l of buffer A into the
centrifuge tube and then uniformly mixing by vortex oscillation; if the insoluble precipitate occurs, centrifuging the insoluble precipitate, and transferring supernatant obtained by centrifuging into another centrifugal tube; fourthly, adding 200 to 600mu l of buffer B into the centrifuge tube, uniformly mixing, then adding a
magnetic bead solution, oscillating, uniformly mixing and the like. According to the extraction method of the
bacterial RNA, provided by the invention, the thallus can be quickly cracked, and further the
RNA is released; in addition, the
magnetic bead is combined with the advantages of
nucleic acid, so that the extraction concentration is increased, the operation is simple and quick, and the extraction efficiency is greatly improved.