{"title":"Discoloration of indigo dyes by eco-friendly biocatalysts","authors":"Kwon-Young Choi","doi":"10.1016/j.dyepig.2020.108749","DOIUrl":null,"url":null,"abstract":"<div><p><span>Indigo is one of the most commonly used dyes worldwide. However, indigo dyeing technology and physicochemical treatment processes have generated potentially hazardous by-products and sludge, causing serious environmental pollution. Among indigo-treating technologies, biological treatments using a “green” catalysts of laccase and oxidase enzymes have been spotlighted. This review comprehensively assessed the whole cell-based discoloration and </span><em>in vitro</em><span><span> enzyme treatment of indigo (carmine) and process engineering, including </span>enzyme immobilization and aggregation, for indigo degradation. Although both have various advantages, effective process design to obtain desirable biomass and enzyme production strategy with cost-effective manner should be considered for indigoids treatment. In addition, the supply of electron mediators and the removal of unexpected byproducts by the laccase should also be considered throughout the whole process. Therefore, further researches on enzyme and process engineering such as chemo-enzymatic process to obtain the desired performances at the industrial level were suggested.</span></p></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.dyepig.2020.108749","citationCount":"27","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dyes and Pigments","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0143720820314467","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 27
Abstract
Indigo is one of the most commonly used dyes worldwide. However, indigo dyeing technology and physicochemical treatment processes have generated potentially hazardous by-products and sludge, causing serious environmental pollution. Among indigo-treating technologies, biological treatments using a “green” catalysts of laccase and oxidase enzymes have been spotlighted. This review comprehensively assessed the whole cell-based discoloration and in vitro enzyme treatment of indigo (carmine) and process engineering, including enzyme immobilization and aggregation, for indigo degradation. Although both have various advantages, effective process design to obtain desirable biomass and enzyme production strategy with cost-effective manner should be considered for indigoids treatment. In addition, the supply of electron mediators and the removal of unexpected byproducts by the laccase should also be considered throughout the whole process. Therefore, further researches on enzyme and process engineering such as chemo-enzymatic process to obtain the desired performances at the industrial level were suggested.
期刊介绍：
Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied.
Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media.
The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.
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