Preparation of Biocolorant and Eco-Dyeing Derived from Polyphenols Based on Laccase-Catalyzed Oxidative Polymerization

Abstract

Natural products have been believed to be a promising source to obtain ecological dyes and pigments. Plant polyphenol is a kind of significant natural compound, and tea provides a rich source of polyphenols. In this study, biocolorant derived from phenolic compounds was generated based on laccase-catalyzed oxidative polymerization, and eco-dyeing of silk and wool fabrics with pigments derived from tea was investigated under the influence of pH variation. This work demonstrated that the dyeing property was better under acidic conditions compared to alkalinity, and fixation rate was the best when pH value was 3. Furthermore, breaking strength of dyed fabrics sharply reduced under the condition of pH 11. Eventually, the dyeing method was an eco-friendly process, which was based on bioconversion, and no mordant was added during the process of dyeing.

Thermostable bacterial laccase for sustainable dyeing using plant phenols

“…This pigment was successfully used to dye silk and wool fabrics. 44 In the present study, we generated black colour from catechol, light-brown colour from ferulic acid and dark-brown colour from gallic acid through LacT-driven catalysis.…”

“…Wang et al prepared a biocolourant for the eco-dyeing of woolfabrics via the laccase-driven oxidative polymerization of polyphenols. 41,43,44 In general, dyeing hair with colourants remains a big task, given that the colourants developed in aqueous solutions do not always impart the same intensity of colour on hair. Thus, although the laccase-catalysed reaction can generate a wide range of colour, only a few dyes can actually show effective hair colouring.…”

Applications of Natural Violet Pigments from Halophilic Chromobacterium violaceum PDF23 for Textile Dyeing with Antimicrobial and Antioxidant Potentials

“…To combat the drawbacks of synthetic dyes, natural dyes have attracted the interest of researchers and industrialists due to their non-hazardous, bio-degradable, sustainable, nonallergic, anticancer, and environment-friendly properties [9,10]. Natural dyes have also performed a significant role in preventive medicine, including anti-inflammatory, antihemolytic, antipyretic, antifungal, antioxidant, and antibacterial activities [11].…”

Mordant Free Dyeing and Functionalization of Wool Fabrics with Biocolorants Derived from Apocynum venetum L. Bast

“…With ever-increasing concerns on ecosafety and human health issues, the utilization of renewable and sustainable biomass resources has become a universal research theme. , Natural dyes, obtained from plants, have been extensively used for the coloration of textiles with fascinating properties such as being biodegradable, ecological, renewable, nontoxic, and nonallergic. − Since flavonoids are naturally occurring pigments, which are highly diversified and are ubiquitous to vascular plants, as well as easily separable with traditional separation methods, researchers have long used these compounds as dyes for dyeing processes. , However, some inherent disadvantages like poor color depth and low colorfastness of the dyed textiles limit their use in modern-day applications. , To overcome these problems, metallic mordants are usually employed by meta-, pre-, and postmordanting procedures . The most commonly used mordants include potassium dichromate, aluminum potassium sulfate, ferrous sulfate, stannous chloride, and copper sulfate .…”