Laccase‐catalysed coloration of wool and nylon

Abstract

The potential for laccase (EC 1.10.3.2) to be used within the area of textile coloration, specifically for the generation of decorative surface pattern design, remains relatively unexplored. The current study presents a novel process for the coloration of wool and nylon 6,6 fibres via laccase oxidation of aromatic compounds as an alternative to conventional dyeing methods. Emphasis was placed on producing a diverse colour palette, which was achieved through the investigation of three different aromatic compounds as laccase substrates: 1,4-dihydroxybenzene, 2,7-dihydroxynapthalene and 2,5-diaminobenzenesulphonic acid. Reaction processing parameters such as buffer systems and pH values, laccase and aromatic compound concentrations, and reaction times were investigated, all in the absence of additional chemical auxiliaries. Enzymatically dyed fabrics were tested against commercial standards, resulting in reasonably good colour fastness to wash. To demonstrate the coloration and design potential by laccase catalysation of aromatic compounds, specially constructed fabrics using a combination of undyed wool, nylon and polyester yarns were dyed using the onestep laccase-catalysed coloration process. The use of different fibre types and weave structures enabled simple colour variations to be produced. Shadow, reserve and contrasting effects were achieved with the laccase-catalysed dyeing process developed. Important advantages over conventional processing methods include the use of simpler and milder processing conditions that eliminate additional chemical use and reduce energy consumption. Coloration Technology Society of Dyers and Colourists AB, acetate buffer; CB, citrate buffer; PB, phosphate buffer. Prajapati et al. Laccase-catalysed coloration CLB, hydrochloric acid/potassium chloride buffer; AB, acetate buffer; CB, citrate buffer; PB, phosphate buffer. Prajapati et al. Laccase-catalysed coloration

Applications of Microbial Laccases: Patent Review of the Past Decade (2009–2019)

“…Numerous investigations of textile dye wastewater treatment by laccases were also reported, which is reflected in recent journal publications including immobilized [110][111][112] as well as non-immobilized laccases [60,113]. Apart from wastewater treatment applications, laccases were recently investigated in wool dyeing by the polymerization of syringic acid [114], the antimicrobial coating of textile fibers by polymerization of catechol and p-phenylenediamine [115], the pH-responsive and conducting coating of wool fabrics by the polymerization of diaminobenzenesulfonic acid [116], nylon and wool dyeing by laccase-catalyzed 1,4-dihydroxybenzene, 2,7-dihydroxynapthalene, and 2,5-diaminobenzenesulphonic acid coupling [117].…”

In Situ Wood Fiber Dyeing Through Laccase Catalysis for Fiberboard Production

“…As a fact, laccases are able to catalyze coupling of aromatic compounds, such as phenols and diamines, producing colored oligomers or polymers in the presence of different solid porous matrixes ( Su et al, 2018 ). Several research groups have already applied in situ enzymatic synthesis of dyes in existing industrial products such as cotton, wool, and hair dye ( Kim et al, 2007 ; Jeon et al, 2010 ; Pezzella et al, 2016 ; Sousa et al, 2016 ; Kumar et al, 2018 ; Prajapati et al, 2018 ; Yuan et al, 2018 ).…”

“…The aim of this research was to develop a laccase-catalyzed in situ dyeing process for wood fibers that could be integrated into the already existing industrial processes, as an alternative to conventional MDF dyeing methods. Several studies, exploring laccase catalysis, suggest that a wide range of color diversity may be achieved through a combination of different precursors incubated together in the presence of enzymes ( Kim et al, 2007 ; Jeon et al, 2010 ; Pezzella et al, 2016 ; Kumar et al, 2018 ; Prajapati et al, 2018 ; Yuan et al, 2018 ). This study was focused on investigating the dyeing reactions using laccase catalysis on seven selected substrates combined in heteromolecular mixtures that led to formation of mixtures of heteropolymers or homopolymers.…”

Peroxidase‐catalysed coloration of wool fabrics

“…A study by Shin et al 3 found that in situ coloration of wool could be achieved if wool fabric was pretreated with phenolic compounds such as hydroquinone or ferulic acid then subsequently treated with either laccase or peroxidase. Since the study conducted by Shin et al, the majority of studies investigating enzyme coloration of textiles have focused on the use of laccase rather than peroxidase 2,4‐7 . Recently published studies have explored the application of laccase on the in situ coloration of wool and cotton fabrics 5,7‐10 .…”

“…Since the study conducted by Shin et al, the majority of studies investigating enzyme coloration of textiles have focused on the use of laccase rather than peroxidase 2,4‐7 . Recently published studies have explored the application of laccase on the in situ coloration of wool and cotton fabrics 5,7‐10 . Peroxidase oxidation has also been proposed for the dyeing of human hair 11‐13 .…”