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L-Amino acid oxidase (L-AAO) was purified from the solid state-grown cultures of A. oryzae ASH (JX006239.1) by fractional salting out, followed by ion exchange and gel filtration chromatography, to its molecular homogeneity, displaying 3.38-fold purification in comparison with the crude enzyme. SDS-PAGE revealed the enzyme to be a homo-dimer with ∼55-kDa subunits, with approximate molecular weight...
Twenty-seven fungal isolates recovered on medium containing L-lysine were found to have the potentiality for producing extracellular L-amino acid oxidase (L-AAO). Aspergillus oryzae displayed the highest yield of enzyme (2.6 U/mg protein) and antioxidants (2.3 mg/ml) followed by Aspergillus flavipes and Trichoderma viride. Upon optimization of the fermentation medium, the maximum enzyme yield (4.6 U/mg...
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