From 3 h treatment of MNNG
, 39 mutants were selected on the basis of morphology and the production of a-amylase (zone diameter).
Enzymes can also be over expressed by mutations with certain mutagens such as gamma and ultra violet (UV) radiation, ethidium bromide and MNNG
Extracts of green and black tea leaves decreased the mutagenic activity of MNNG in E.
However, when added to known mutagens such as AF-2 and MNNG, mutagenesis was increased by ginger juice, and the potent mutagen identified in this case was 6-gingerol (Nakamura & Yamamoto, 1982).
improvement of Escherichia coli isolates for better L-lysine production through MNNG treatment.
Enhanced L-lysine production by a Escherichia coli mutant WARN-30522 after MNNG treatment.
producing 82% kill in case of MNNG and 76% kill by ethidium bromide, was found to be the best.
Chemical mutagenesis of Cellulomonas was carried out with ethyl methane sulfonate (EMS) and MNNG as mutagens to obtain a hyper-xylanoytic mutant with 2.
Key: BCM: MNNG treated BCE: Ethidium bromide treated niger BCM-8 and BCE-6 would be potential mutants for the maximum production of glucose oxidase.
Characterization of gene expression changes associated with MNNG
, arsenic, or metal mixture treatment in human keratinocytes: application of cDNA microarray technology.
Enhanced L-lysine production by an Escherichia coli mutant WARN 30522 after MNNG
5 and 17 forestomach Rat DENA 1-6 and 12 Stomach Rat MNNG