公开(公告)号：US3620924A

公开(公告)日：1971-11-16

申请号：US3620924D

申请日：1969-04-01

Applicant: BAXTER LABORATORIES INC

Inventor： HARVEY MUERNER S ,  VIEBROCK FREDERICK W

IPC: A61K38/46 ,  C12N9/38 ,  C07G7/028

CPC classification number: C12Y302/01023 ,  C12N9/2471 ,  C12N9/86 ,  C12Y305/02006 ,  Y10S435/815 ,  Y10S435/816 ,  Y10S435/917

Abstract: The production of an acid-active, acid-stable lactase enzyme preparation by cultivating Aspergillus Niger under aerobic fermentation conditions, extracting the growth product with water, adsorbing the extract with a hydrated aluminum silicate adsorbent at a pH of 3 to 6 and releasing an active lactase component therefrom by adjusting the pH to 7 to 8.