High-performance liquid chromatography of Cladosporium herbarum. Identification of allergens with immunological...

High-performance liquid chromatography (HPLC) using a gel permeation column was applied to separate components in a crude extract of the mould Cladosporium herbarum. Allergenic activity as well as individual allergens in collected fractions were analyzed by direct radioallergosorbent test (RAST) and fused rocked radioimmunoelectrophoresis (FRRIE), respectively. Thus, information of the molecular weight as well as the importance of the individual allergens were obtained simultaneously in a system showing a high degree of resolution. The study demonstrated that the crude extract of C. herbarum contained allergens mainly in the molecular weight range between 10,000 and 300,000 daltons. The results demonstrated the importance of carrying out both RAST and FRRIE to detect all allergens.