In recent years, the biological treatment took attraction in removing the undesired color and toxicity of dyes than other ordinary treatment processes.
Soon she can't hold a conversation without mentioning the mercury content of tuna or the toxicity of hair dye.
The use of extracted enzymes as in the present work, however, offers an advantage in the fact that an enzyme is not affected by the toxicity of the dye.
He worked extensively on the toxicity of synthetic dyes and their metabolites and has been awarded Ph.D. degree in 1987.
Some studies proved the possible toxicity of azo dyes to microorganisms involved in biodegradation.
They have caused severe environmental contamination because of potential toxicity of the dyes and their visibility in water bodies.
Except for toxicity of azo dyes, NACs, or their intermediates of metabolites, the chemical structure would influence the electron density of azo bonds or nitro groups by the electronegativity of the substituents or resonance effect and the steric hindrance to affect the biodegradation efficiency.
However, this observation is prevented by the photo-toxicity of the dye, which limits the viability of the diatoms over the timespan of the experiments.
In addition, a clear reduction of the toxicity of the azo dye was achieved at the end of the experiments.
Therefore, the aim of this study was to evaluate the organ toxicity of commercial hair dye in rats.
