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The Ability Of Pleurotus Citrinopleatus And Aspergillus Niger Exposed

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RESULTS AND DISCUSSION
The ability of Pleurotus citrinopleatus and Aspergillus niger exposed to two doses of gamma irradiation (1 and 2 KGy) and immobilized on wheat straw to decolorize the dyes had been studied. Table 2 shows peaks of wavelengths of different types of dyes before and after decolorization. Peaks of reactive red 6 BX, direct brown BN, direct yellow 5 G, disperse orange 2RLS, disperse violet 3RS, sulpher black Br and sulpher brown SG were at 295, 240, 400, 444, 499, 220 and 250nm were disappeared respectively after decolorization with tested fungi.
Table 2: Wave lengths (λ) of different tested dyes
Dyes
λ max (nm)
Bofore decolorization
After decolorization
Reactive red 6 BX
295, 545
545
Direct Brown BN
390, 240
390
Direct Yellow 5G
400, 250
250
Disperse Orange 2 RLS
444, 288
288
Disperse Violet 3 RS
499, 281
281
Sulpher Black Br
220, 290
290
Sulpher Brown SG
278, 250
278
Awan et al., (2011) reported that Aspergillus niger is a potent producer of many industrially important enzymes and may genetically be improved by exposure to gamma rays. The mutants recovered after treatment by gamma rays were found to be effective producers of enzymes (Awan et al., 2011). Mutagenesis of Aspergillus niger by using chemicals has been reported earlier to improve many industrially important enzymes and other products. The cells of Aspergillus niger were subjected to mutagenesis by ultraviolet irradiation, resulting in 45.4% activity of cellulase (Junwei and Shuyun, 1988). Non

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