The separation of xylanases from the crude culture filtrates of Aspergillus sp 5 and Aspergillus sp 44 was carried out using affinity precipitation with a commercially available enteric polymer Eudragit S100. With affinity precipitation the yield of enzyme was 85.3, 82.7% with 10.8, 4.08-folds (specific activity of ammonium sulphate precipitate was taken as 100%) increases in the specific activity of Aspergillus sp 5 and Aspergillus sp 44, respectively. A comparison of SDS-PAGE electrophoretic patterns of the ammonium sulphate and purified enzyme by affinity precipitation showed significant purification of the enzyme. Zymogram analysis revealed recovery of three and two forms of xylanases from Aspergillus sp 5 and Aspergillus sp 44, respectively.