Method for extracting nucleic acids from biological sample

A method for extracting nucleic acids from a biological sample, the method comprising:

• (a) disrupting a biological sample by bead-beating a biological sample-bead solution prepared by adding a buffer solution, a surfactant, and beads to the biological sample;
• (b) centrifuging and purifying the biological sample-bead solution in which the biological sample has been disrupted;
• (c) performing a repurification by adding a kosmotropic salt solution to the solution thus purified and centrifuging the resulting mixture;
• and
• (d) extracting nucleic acids from the repurified solution.

A method for extracting nucleic acids from a biological sample, the method comprising:

• (a) disrupting a biological sample by bead-beating a biological sample-bead solution prepared by adding a buffer solution, a surfactant, and beads to the biological sample;
• (b) filtering and purifying the biological sample-bead solution in which the biological sample has been disrupted;
• (c) performing a repurification by adding a kosmotropic salt solution to the solution thus purified and performing a heat treatment;
• and
• (d) extracting nucleic acids from the repurified solution.