Immuno Aktiengesellschaft

Baxter Aktiengesellschaft

Regine Tomasits

Heinz Leibl

Martha Eibl

Hermann Wolf

Josef Mannhalter

A method for the separation of IgG and IgA from an immunoglobulin-containing starting material is described, whereby the method is characterized in that (i) IgG and optionally IgA are adsorbed to a solid inorganic carrier material, (ii) IgA is isolated from the eluate, optionally after selective desorption, whereas IgG remains on the carrier material, and optionally (iii) IgG is isolated from the adsorbate. Furthermore, an IgA preparation is disclosed which demonstrates a low tendency to form aggregates.

Process for isolating IgG and IgA

A virus-safe monomeric human IgA is described which is essentially free of IgG. The IgA according to the invention is obtainable according to a process in which (a) an IgA-containing fraction is subjected to a purification such that a monomeric IgA which is essentially free of IgG is obtained and (b) the obtained product is subjected to a process for the inactivation of viruses.

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Vienna, Austria

Regine Tomasits