In Situ Wood Fiber Dyeing Through Laccase Catalysis for Fiberboard Production

Abstract

The aim of the present work was to develop an innovative and environmentally friendly process for wood fiber dyeing and to produce 3-dimensionally fully colored medium-density fiberboard (MDF). The potential of laccase-catalyzed polymerization of selected precursors to form dyes useful in fiberboard manufacturing, a technique used for the first time in this field, was demonstrated. Some of the 7 aromatic compounds tested yielded colored products after laccase treatment under both acid and alkaline conditions, and a good variety of colors was attained by using mixtures of two different monomers. To demonstrate the coloration and design potential of laccase conversion of aromatic compounds, MDFs were enzymatically dyed using an in situ one-step laccase-catalyzed coloration process, and the results were compared against commercial MDFs obtained by using organic coloring agents. Important advantages over conventional processing methods include good color fastness and, in some cases, new hydrophobic properties, allowing designers and woodworkers to explore the beauty of textures and the use of simpler and milder processing conditions that eliminate harsh chemical use and reduce energy consumption.

Effect of tannic/gallic acid-iron dyeing treatment on surface color and light fastness of bamboo veneer

“…Its utilization in various forms as one of the surface decoration materials of wood-based panels makes it widely used in the manufacture of high-grade indoor and outdoor decorative materials and furniture materials, but the monotonous colors and patterns limit its development thus it needs to be discolored. At present, the primary methods for controlling the color of wood materials are physical [ 2 ], chemical [ 3 ] and other methods of dyeing, as well as the application of light [ 4 ], heat [ 5 , 6 ] and other means. The principles of biomimetic structural color [ [7] , [8] , [9] ] and bio-dyeing [ 10 , 11 ] have also been utilized to regulate the color of wood research as well.…”

Nanomaterials as Redox Mediators in Laccase-Based Amperometric Biosensors for Catechol Assay

“…Laccase is generally used in different industries, including food, textile, wood, pharmaceutical industries, and others [ 4 , 5 , 6 , 7 , 8 , 9 ]. The global laccase market is projected to reach USD 3 million in 2022 and is forecasted to reach USD 4 million by 2028 (adjusted for a compound annual growth rate of 4.3% during the review period).…”