专利名称：Lactase preparation发明人：Fenton, Dennis Michael申请号：EP81301094.9申请日：19810316公开号：EP0036737B1公开日：19860205
摘要：A process for the release of lactase from yeast cells comprising contacting thecells with an alkyl alcohol or a dialkyl ketone, followed by extraction of the lactase in anaqueous solution at a pH in the range 5.5 to 8.0 is disclosed. Also disclosed is a processfor the selective reduction of protease activity in lactase preparations comprising heatingan aqueous solution of lactase containing protease impurities in the presence of glycerol.Lactase stability during the heating process can optionally be enhanced by addition ofmanganous ion.
申请人：PFIZER INC.
地址：235 East 42nd Street New York, N.Y. 10017 US
国籍：US
代理机构：Moore, James William, Dr.
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