Abstract: In a method for producing gelatin from collagen-containing raw material, the raw material is ground and mixed with water to form a slurry; the slurry is treated with an acid and heated in order to expose the collagen in the raw material; the pH and the temperature of the slurry are adjusted once more; the slurry is separated into a liquid portion and a solid residue; and the gelatin is recovered from the liquid portion.

Abstract: A platelet lysate is produced from plasma derived from animal whole blood that contains an added citrate to prevent coagulation of the blood during storage. The lysate is prepared by centrifuging plasma to produce a platelet rich paste, adding calcium to the paste to lyse the platelets therein and coagulate fibrinogen to produce a clear liquid containing lysed platelets, sterile filtering the liquid and collecting a liquid filtrate containing the lysed platelets. The obtained lysate of platelets can be used to wholly or partly replace foetal calf serum in cell culture, such as in culture of hybridoma cells for preparing monoclonal antibodies.