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首页> 外文期刊>Journal of Environmental Protection >Sustainable Discoloration of Textile Chromo-Baths by Spent Mushroom Substrate from the Industrial Cultivation of Pleurotus ostreatus
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Sustainable Discoloration of Textile Chromo-Baths by Spent Mushroom Substrate from the Industrial Cultivation of Pleurotus ostreatus

机译：平菇工业化栽培中用过的蘑菇菌基质对纺织染浴的可持续褪色

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Synthetic dyes are recalcitrant to degradation and toxic to different organisms. Physical-chemical treatments of textile wastewaters are not sustainable in terms of costs. Biological treatments can be more convenient and the lig-nin-degrading extracellular enzymatic battery of basidiomycetes are capable to discolor synthetic dyes. Many basidi-omycetes are edible mushrooms whose industrial production generates significant amount of spent mushroom substrate (SMS) with residual high levels of lignin-degrading extracellular enzymatic activities. We have demon-strated that the low cost organic substrate, the SMS deriving from the cultivation of the basidiomycetes Pleurotus ostreatus, is able to discolor anthraquinonic, diazo and monoazo-dyes when incubated in dying chromo-reactive and chromo-acid baths containing surfactants and anti-foams, where the concentrations of the different dyes are exceeding the one recovered in the corresponding wastewaters. Laccase was the lignin-degrading extracellular enzyme involved in the discolouring process. The exploitation of the low cost SMS in the treatment of textile wastewaters is proposed. Accordingly, a toxicological assessment, based on a cyto-toxicity test on a human amnion epithelial cell line (WISH) and the estimation of the germination index (GI%) of Lactuca sativa, Cucumis sativus and Sorghum bicolor, has been performed, showing the loss of toxicity of the chromo-baths after being discoloured by the SMS.
机译：合成染料难以降解，并且对不同生物有毒。就成本而言，纺织废水的物理化学处理是不可持续的。生物处理会更方便，并且担子菌的降解木质素的胞外酶电池能够使合成染料褪色。许多担子菌是可食用的蘑菇，其工业生产会产生大量的废蘑菇底物（SMS），并残留高水平的木质素降解细胞外酶活性。我们已经证明，低成本的有机底物，即源自平菇侧孢菌的栽培衍生的SMS，当在含有表面活性剂和消泡剂，其中不同染料的浓度超过在相应废水中回收的一种。漆酶是参与变色过程的降解木质素的细胞外酶。提出了利用低成本SMS处理纺织废水的方法。因此，已经基于对人羊膜上皮细胞系（WISH）的细胞毒性测试以及紫花苜蓿（Lactuca sativa），黄瓜（Cucumis sativus）和高粱（Sorghum bicolor）的发芽指数（GI％）的估计进行了毒理学评估，表明SMS变色后，染液失去毒性。

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