| 摘要 |
<p>A filtration process is disclosed for preparing nucleic acids from natural sources. The nucleic acid-containing sources are disintegrated, the disintegrated product is left to rest for a certain time, the resulting disintegrated product is passed through a filtering layer made of glass, silica gel, aluminium oxide or powdery diatomaceous earth or non wovens of interwoven or glued glass fibres and silica gel, cellulose, paper, pressed paper, non wovens of paper, particles, layers, membranes or plastics, such as non woven fabrics based on polypropylene. The fraction that passes through the filtering layer is collected and the nucleic acids are isolated from the collected fraction and purified.</p> |
