The presence of azo dyes in wastewater from the textile industry is a major environmental concern. The dyes not only make water aesthetically unacceptable, but also have severe toxicological concerns. Research into treatment processes for removal of dyes has focused primarily on decolourization and little attention has been focused on analysis of the degradation products, that could plausibly be more toxic than the parent compound. This study focusses on soybean peroxidase (SBP)‐catalyzed treatment of two azo dyes, Methyl Orange (MO) and CI Direct Yellow 12 (DY12) in water, chosen because they lack phenolic and primary anilino functional groups, which are usually expected to form free radicals under peroxidase catalysis.

中文翻译：

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大豆过氧化物酶催化的磺化染料及其偶氮裂解产物的降解

纺织工业废水中偶氮染料的存在是主要的环境问题。这些染料不仅使水在美学上不可接受，而且具有严重的毒理学问题。对去除染料的处理方法的研究主要集中在脱色上，很少关注集中在降解产物的分析上，因为降解产物可能比母体化合物毒性更大。这项研究的重点是大豆过氧化物酶（SBP）催化处理水中的两种偶氮染料，甲基橙（MO）和CI直接黄12（DY12），因为它们缺乏酚和伯胺基苯胺基官能团，因此通常会形成它们过氧化物酶催化下的自由基。