Microbial dyeing for inoculation and pigment used in wood processing: Opportunities and challenges

Liu, Yuansong; Yu, Zhiming; Zhang, Yang; Wang, Haowei

doi:10.1016/j.dyepig.2020.109021

Cited by 20 publications

(7 citation statements)

References 56 publications

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“…As the industry progressively explores environmentally friendly and versatile substitutes for traditional synthetic additives [33], which often lack considerations for environmental sustainability during production [34], scientific investigation is delving into the utilization of organic supplements in coatings [35]. In pursuit of this goal, scientists have recently studied the impacts of integrating a range of components into wood coatings, including linseed oil [36], cellulose fibers [37], colorants derived from wood byproducts [38], microbial coloring [39], and dyes extracted from fungi [40] and microalgae [41,42].…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Multilayer Coating Harnessing the Functional Features of Curcuma-Based Pigment and Rice Bran Wax as a Hydrophobic Filler

Calovi,

Rossi

2023

Materials

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This work aims to highlight the multiple features shown by curcuma-based pigment and rice bran wax, which can be selectively employed as bio-based additives for the realization of multilayer wood coatings with multiple functionalities, harnessing the capabilities of the two environmentally friendly fillers, in line with current environmental sustainability trends. The role of the two green materials on the morphology of the composite layers was examined through observations employing scanning electron and optical microscopy, revealing a strong alteration of the film’s appearance, both its color and reflectivity. Additionally, their influence on the paint’s resilience was assessed by exposing the samples to UV-B radiation and consecutive thermal shocks. The coating displayed a clear and uniform change in color because of substantial curcuma powder photo-degradation but it remained exceptionally stable when subjected to thermal stresses. Moreover, the protective properties of the coatings were evaluated by conducting liquid resistance tests and water uptake tests, while the hardness and the abrasion resistance of the coatings were assessed to evaluate the effect of the additives on the mechanical properties of the coatings. In conclusion, this study showcases the promising joint action of curcuma-based pigment and rice bran wax in multilayer coatings. This combination offers vibrant yellow tones and an appealing appearance to the paint, enhances the surface’s water-repellent properties, and improves the mechanical resistance of the coatings.

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Section: Introductionmentioning

confidence: 99%

Eco-Friendly Multilayer Coating Harnessing the Functional Features of Curcuma-Based Pigment and Rice Bran Wax as a Hydrophobic Filler

Calovi,

Rossi

2023

Materials

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“…Academia is now exploring the utilization of untreated additives in films [45,46]. In line with this objective, recent studies have examined the effects of incorporating various substances into wood coatings, including linseed oil [47], timber waste-derived colorants [48], microbialassisted coloring [49], mycelium-based dyes [50], and biomass fibrous material [51].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of the Advantages and Disadvantages of Utilizing Spirulina-Derived Pigment as a Bio-Based Colorant for Wood Impregnator

Calovi

Rossi

2023

Coatings

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The aim of this work was to examine the advantages and disadvantages of using spirulina-derived pigment as a bio-based colorant for wood impregnators. It investigated the effects of three different quantities of spirulina granules on the aesthetic properties and durability of a water-based wood impregnator. The impact of this environmental friendly pigment on the overall appearance of the coatings was estimated through colorimetric measurements and observations using an optical microscope. The durability of the coatings with varying amounts of spirulina was assessed by subjecting the samples to UV-B radiation and cyclic thermal shocks and analyzing them using infrared spectroscopy and colorimetric inspections. Furthermore, the influence of additive concentration on the coating’s barrier efficiency was examined through liquid resistance and water uptake tests. Finally, the scrub test was carried out to assess the effect of the spirulina pigment on the abrasion resistance properties of the protective layers. Ultimately, this study emphasized the remarkable coloration achieved through the use of the spirulina-based additive. However, the pigment derived from natural sources exhibited significant concerns associated with deterioration caused by UV-B radiation or the fading of the phycocyanin component found in spirulina. Thus, the work underscores the importance of implementing appropriate measures to safeguard the bio-based pigment from external factors such as temperature, solar radiation, and liquids.

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“…Due to the large-scale use of fast-growing forests in China, the color of the wood is an important feature that needs to be improved urgently. Various modification processes such as densification [ 3 , 4 ], dyeing [ 5 ], and recombination [ 6 ] have been carried out for the modification of fast-growing wood, among which wood heat treatment is considered to be a green and environmentally friendly wood modification method. Heat treatment can adjust the moisture content of wood and improve dimensional stability, corrosion resistance, etc.…”

Section: Introductionmentioning

confidence: 99%

Study on the Discoloration Mechanism of Eucalyptus Wood during Thermal Treatment in Different Media

et al. 2023

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Chromophore structures in wood are the core elements for regulating wood color. Thermal treatment can regulate the color of wood, thus increasing its added value. In this study, conventional thermal treatment was used to regulate the color of Eucalyptus, in order to make its color close to the precious wood species Burma padauk. The color change in Eucalyptus wood was analyzed using the chromaticity index and UV–Vis. The chromophore structures in the treated wood and their discoloration mechanisms were characterized via FTIR, XPS, NMR, etc. The results showed that the color of eucalyptus could be regulated via thermal treatment to become more similar to the color of Burma padauk under both saturated steam and hot air. The treated wood showed a color difference in the 400~500 nm region in spectral absorption. The changes in the chromophore structures of wood were accompanied by the degradation of hemicelluloses. Meanwhile, demethoxylation occurred in the syringyl structure G of lignin, which led to the polymerization of lignin and decreased the lightness value of wood. Moreover, the number of conjugated structures in the chromophore groups increased, which caused the color of the wood to tend toward red. This study provides a reference for the color regulation of wood, and the mechanisms are also discussed.

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Microbial dyeing for inoculation and pigment used in wood processing: Opportunities and challenges

Cited by 20 publications

References 56 publications

Eco-Friendly Multilayer Coating Harnessing the Functional Features of Curcuma-Based Pigment and Rice Bran Wax as a Hydrophobic Filler

Eco-Friendly Multilayer Coating Harnessing the Functional Features of Curcuma-Based Pigment and Rice Bran Wax as a Hydrophobic Filler

Comparative Analysis of the Advantages and Disadvantages of Utilizing Spirulina-Derived Pigment as a Bio-Based Colorant for Wood Impregnator

Study on the Discoloration Mechanism of Eucalyptus Wood during Thermal Treatment in Different Media

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