| Literature DB >> 7989263 |
Abstract
A series of mutations was carried out with Aspergillus niger NCIM-616 as the parent strain. A mutant strain NG-4 with 28% increased beta-galactosidase productivity was produced with N-methyl-N-nitro-N-nitrosoguanidine (NTG) at 1500 micrograms ml-1 concentration and exposure time of 60 min. This mutant yielded a third generation u.v.-treated strain, UV-5 with a 117.6% increase in beta-galactosidase productivity with respect to the parent strain.Entities:
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Year: 1994 PMID： 7989263 DOI： 10.1111/j.1365-2672.1994.tb03435.x
Source DB: PubMed Journal: J Appl Bacteriol ISSN： 0021-8847