Biogenic colourants in the textile industry – a promising and sustainable alternative to synthetic dyes

Fried, Richard M.; Oprea, Ilinca; Fleck, Karin; Rudroff, Florian

doi:10.1039/d1gc02968a

Cited by 61 publications

(27 citation statements)

References 133 publications

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“…Colorants are essential chemicals in our daily life and are widely used for food, cosmetics, fabrics, inks, and pharmaceuticals, to name a few. Although human beings used various natural substances as colorants even in prehistoric times, advances in chemical synthesis have enabled synthetic colorants (see Glossary) to dominate the colorants market by reducing the manufacturing costs and increasing the production scale for a wide range of applications [1]. In addition, various chemical methods have been developed to modify the physicochemical properties (e.g., solubility and stability) of synthetic colorants and to broaden the color spectrum.…”

Section: Natural Colorants As Alternatives To Synthetic Colorantsmentioning

confidence: 99%

“…In addition, various chemical methods have been developed to modify the physicochemical properties (e.g., solubility and stability) of synthetic colorants and to broaden the color spectrum. However, excessive use of these petroleum-derived synthetic colorants has caused severe water and soil pollution [1,2]. Furthermore, they can also cause allergic reactions in some people, raising potential healthcare concerns [3].…”

Section: Natural Colorants As Alternatives To Synthetic Colorantsmentioning

confidence: 99%

“…Natural colorants are color-displaying compounds derived from various natural resources, including plants, microorganisms, and insects [4]. They are generally regarded as safer and more biodegradable compared with synthetic colorants [1]. The preference for natural colorants over synthetic ones has continuously been increasing, not only due to their eco-friendly and biocompatible properties, but also due to their beneficial biological activities, including anticancer, antioxidant, and antimicrobial activities [5].…”

Section: Natural Colorants As Alternatives To Synthetic Colorantsmentioning

confidence: 99%

“…The synthetic colorant market has grown at an unprecedented pace after its first invention in the 1850s [65]. Azo-dyes account for most of the synthetic dyes produced, which also prevail over natural colorants due to the ease of synthesis at low production costs and expanded color range [1]. However, due to environmental and health issues arising from excessive use of synthetic colorants and difficulties in wastewater treatment, natural colorants are receiving more attention for their eco-friendly production and human-friendliness [66].…”

Section: Box 2 Synthetic Versus Natural Food Colorantsmentioning

confidence: 99%

See 3 more Smart Citations

Production of natural colorants by metabolically engineered microorganisms

Prabowo

Eun

Yang

et al. 2022

Trends in Chemistry

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Section: Natural Colorants As Alternatives To Synthetic Colorantsmentioning

confidence: 99%

Section: Natural Colorants As Alternatives To Synthetic Colorantsmentioning

confidence: 99%

Section: Natural Colorants As Alternatives To Synthetic Colorantsmentioning

confidence: 99%

Section: Box 2 Synthetic Versus Natural Food Colorantsmentioning

confidence: 99%

See 2 more Smart Citations

Production of natural colorants by metabolically engineered microorganisms

Prabowo

Eun

Yang

et al. 2022

Trends in Chemistry

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“…Today, everyone has virtually unlimited access to color, and more than one million tons are created per year [1,4]. The manufacture of textiles, plastic, paper, pharmaceuticals, and cosmetics all use the cationic water-soluble dye methylene blue [5,6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Activated Carbon Composited With Egyptian Black Sand for Enhanced Adsorption Performance toward Methylene Blue Dye

ElKholy

Yahia²,

El-Nawawy

et al. 2022

Preprint

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The present study reports the feasibility of the synthesis of a novel porous activated carbon (OS400) composite adsorbent prepared from olive stone and impregnated with garnet (GA) types of black sand minerals. The Activated Carbon/ garnet composite (OSMG) was applied for the sorption of macromolecular organic dye. The structural characteristics of the synthesized composite were evaluated by Brunauer–Emmett–Teller (BET), N2 adsorption/desorption measurements, Scanning Electron Microscopy equipped with Energy Dispersive X-ray spectroscopy (SEM-EDX), X-ray diffraction (XRD), and a Fourier transform infrared spectrometer (FT-IR). The specific surface area of (GA), (OS400), and (OSMG) were 5.157 m2.g− 1, 1489.598 m2.g− 1, and 546.392 m2.g− 1, respectively. The high specific surface area and effective active centers of the new composite promoted the adsorption of methylene blue (MB). The experiments were carried out under various conditions such as contact time, initial concentration of adsorbate, adsorbent dosage, pH, and temperatures. The equilibrium adsorption data were evaluated using the Langmuir and Freundlich isotherm models. The results display that, the adsorption isotherm had an excellent fitting to the Freundlich model. Furthermore, the data obtained from adsorption kinetic models showed that the pseudo-second-order model more agreeing for describing the (MB) adsorption reaction, suggesting a chemisorption mechanism. The values of thermodynamic parameters indicate that methylene blue dye adsorption onto the (GA) adsorbents through an endothermic reaction, while exothermic sorption of MB onto (OS400) and (OSMG), with a non-spontaneous process.

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Eco‐friendly ultrasonic‐assisted appraisal of herbal‐based yellow natural colorant for silk dyeing

Habib,

Adeel,

Ibrahim

et al. 2024

Energy Science & Engineering

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The global recognition of eco‐friendly products like plant‐based dyes is escalating, driven by their exceptional biological and Ayurvedic attributes. This study isolates colorants from mango turmeric (Curcuma aromatica) using ultrasonic irradiation, supplemented with bio‐mordants to enhance color retention. Through the utilization of Response Surface Methodology and Central Composite Design, a technique that was optimized was completed to maximize coloring variables using statistical analysis. Results from 32 experimental runs reveal that optimal color depth (K/S = 19.399) was achieved with ultrasonic‐treated silk fabric (20 min exposure) using 65 mL of irradiated aqueous extract (20 min) with a pH of 5, supplemented with 1.5 g/100 mL salt of sodium chloride, maintained the temperature 75°C for the 45 min. Precoloring treatment with acacia, pomegranate, and pistachio extracts at specified concentrations enhanced colorfastness. Postdyeing, alterations in the concentrations of these extracts led to further improvements in colorfastness. Notably, adding Al+3 and Fe+2 salts, alongside tannic acid, exhibited notable effects in both pre‐ and postdyeing stages. While the colorfastness properties of unmordated silk fabric was lower than mordanted dyed silk fabric. Irradiation with ultrasonic waves significantly boosted the amount of dye that could be extracted from rhizomes of mango turmeric. Moreover, the application of bio and synthetic mordants in a strategic manner led to colorfastness ratings on silk fabric that ranged from excellent to satisfactory. This research underscores ultrasonic technologies and bio‐mordants' efficacy in sustainable dyeing processes, offering insights for developing eco‐friendly textile coloration methods.

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Biogenic colourants in the textile industry – a promising and sustainable alternative to synthetic dyes

Abstract: The textile and dyeing industry have shown dramatic growth alongside synthetic chemistry in the last century. With operations and economic importance, challenges also increase, including environmental pollution, work safety, and...

Cited by 61 publications

References 133 publications

Production of natural colorants by metabolically engineered microorganisms

Production of natural colorants by metabolically engineered microorganisms

Synthesis of Activated Carbon Composited With Egyptian Black Sand for Enhanced Adsorption Performance toward Methylene Blue Dye

Eco‐friendly ultrasonic‐assisted appraisal of herbal‐based yellow natural colorant for silk dyeing

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