Isolation of a Kluyveromyces fragilis derepressed mutant hyperproducer
of inulinase for ethanol production from Jerusalem artichoke.
In vitro selective concentration of cefepime and ceftazidime for AmpC hyperproducer
E cloacae variants.
Bacterial strains WT and hyperproducers were grown at 37[degrees]C and non-pigmented mutants were grown at 25[degrees]C.
Catalase activities of WT and hyperproducers significantly decreased post-irradiation.
Bacterial strains continued growing, and after 48 hours, only sub-cultures of WT and hyperproducers showed growth.
WT and hyperproducers expressed primarily the constitutively expressed hyperperoxidase, potentially HPII (katE), and catalases present under normal conditions, and therefore showed less catalase activity than the highly catalase-active non-pigmented mutants.
Chapters are in sections on fungi and living crops, the fungal spore in food mycology, fungi and mycotoxins, fungi as hyperproducers
, the ecology, growth, and detection of fungal spoilage, and fungi as food.
However, surveys of resistance mechanisms in cephamycin-resistant isolates have identified promoter or attenuator mutations that result in the upregulation of AmpC [beta]-lactamase production; these isolates are referred to as AmpC hyperproducers (5).
coli AmpC hyperproducers or isolates that produce plasmid-mediated cephalosporinases are technically demanding for clinical laboratories.
hyperproducers or plasmid-mediated enzymes), although studies have shown the widespread distribution of these isolates in Europe and North America (2,9-11).