A method for treating a sample containing biomolecules

The invention generally provides a method for sample preparation for a subsequent preparation, processing or analysis method of at least one species of nucleic acid and / or one species of protein-containing sample, the method comprising the steps of: A) providing a sample containing at least one includes species of a nucleic acid and / or a protein, B) contacting the sample with a liquid or solid composition to produce a fluid sample preparation, wherein said composition contains at least one nitrogen-containing compound which is selected from the group consisting of a) polyamines independently, b) amino acids, and oligo- and polypeptides, c) nitrogen-containing heterocyclic compounds, including homo- or heteropolymers comprising said nitrogenous compounds, d) amines of the type R from H, C In particular, the invention provides a method for lysing a biological sample, and methods for the stabilization of ...