| abstract |
The invention relates to a method for reducing the viral and microorganism burden of solids-containing biological extracts. It is provided that the method, the steps (A) providing a solids-containing biological extract in the form of a suspension consisting of a liquid phase and solid particles dispersed therein, wherein the extract in step (a) comprises a mixture of enzymes, proteins and peptides, which in part in the liquid phase dissolved and bound to another part of the solid particles or in powdered solid form; and (b) irradiating the biological extract provided in step (a); includes, where the radiation used for irradiation is selected from the group comprising ultraviolet radiation, X-radiation, β-radiation and γ-radiation, and - The enzymatic activity of the solid-containing biological extract after irradiation is at least 50% of the enzymatic activity of the solids-containing biological extract before irradiation. |