Red cabbage anthocyanins content as a natural colorant for obtaining different color on wool fibers

Barani, Hossein; Maleki, Homa

doi:10.1108/prt-09-2019-0080

Cited by 9 publications

(6 citation statements)

References 48 publications

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“…The colorfastness to washing slightly improved to Grade 4 after the oxidation treatment, which suggests that excellent absorption of lignin into wool fibers was achieved, increasing the colorfastness to washing. The colorfastness to washing achieved for the lignin sulfonate dyed wool fabrics is quite satisfactory as wool fabrics dyed with natural dyes also show similar colorfastness to washing grade. , …”

Section: Resultsmentioning

confidence: 99%

“…Natural dyes extracted from leaves of pomegranate, Berberis thunbergia, hibiscus flowers, Hibiscus rosa-sinensis, Crocus sativus, skins/peel of Citrus sinensis L., and various fruits, including myrobalan, chamomiles, and peanut shell, are also studied as an alternative to synthetic dyes. Anthocyanin pigments extracted from peels/skins of various fruits, including Brassica oleracea L., purple sweet potatoes, red cabbages, and dragon berries, have been studied for the dying of wool that produces a variety of colors. Tannins and other flavonoids are advantageous as some of them have antioxidant and antibacterial properties that make the treated fabric multifunctional .…”

Section: Introductionmentioning

confidence: 99%

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Valorization of Sulfonated Kraft Lignin as a Natural Dye for the Sustainable Dyeing of Wool Fabrics: Effect of Peroxide Oxidation

Hassan

2023

ACS Sustainable Chem. Eng.

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Lignin is an abundant and complex biopolymer with inherent color but has only a few applications. It has the potential to replace synthetic acid dyes for the coloration of wool fibers in brown shades, as traditional dyeing with acid dyes produces toxic effluent needing costly treatment. In this work, the valorization of sulfonated lignin was explored by using it as a natural dye for the coloration of wool fabrics alone and with hydrogen peroxide (H 2 O 2 ). The dyed fabrics were characterized by reflectance and diffuse reflectance spectroscopies to assess the color yield and ultraviolet (UV) protection performance, respectively. The dyed fabrics exhibited reasonably good color yield and satisfactory colorfastness to washing (Grade 3/4), which improved to Grade 4 by the oxidation treatment with H 2 O 2 . The scanning electron microscopy (SEM) images show that when fabrics are dyed alone with lignin, deposition of lignin particles is visible on the fiber surface, but with hydrogen peroxide, no deposition of lignin is visible on the fiber surface, and the color strength of the fabric became almost double. The UV light transmission through the fabric decreased from 6.73 and 13.23% at 311 and 365 nm to 2.19 and 5.23%, respectively. The attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectra of the dyed fabrics showed increased absorption of lignin sulfonate by the fabric, suggesting depolymerization of lignin by H 2 O 2 to smaller macromolecules easing absorption into the wool fiber. Lignin sulfonate could be a cheap and sustainable alternative to harmful synthetic dyes for producing brown shades on wool fabric.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Valorization of Sulfonated Kraft Lignin as a Natural Dye for the Sustainable Dyeing of Wool Fabrics: Effect of Peroxide Oxidation

Hassan

2023

ACS Sustainable Chem. Eng.

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“…Guo et al (2020) and Varjani et al (2020) reported that the textile industry alone produced 0.7 million tons of textile dyes which are lost to effluents each year, thus creating 2.15 billion tons of dyepolluted wastewater. Textile dyes are natural and synthetic compounds that can absorb radiation of light within the visible spectrum, and they are consist of two main components, chromophores and auxochromes (Barani et al, 2019;Maleki and Barani, 2019;Barani and Maleki, 2020;Haji and Naebe, 2020). Chromophores are made up of different functional groups (O=(C 6 H 4 ) = O, -C=O, -N=N-and -NO 2 ) and are responsible for giving color properties to the dyes.…”

Section: Textile Dyesmentioning

confidence: 99%

Recent methods in the production of activated carbon from date palm residues for the adsorption of textile dyes: A review

Alharbi

Hameed

Alotaibi

et al. 2022

Front. Environ. Sci.

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Textile dyes are organic compounds that can pose an environmental threat if not properly treated. They can cause many problems ranging from human health, ecosystem disturbances, and the reduction of the esthetic value of water bodies. The adsorption process using activated carbon (AC) has been proven to be effective in treating dyes in wastewater. However, the production of AC is limited by the non-renewables and relatively expensive precursor of coal. Date palm residues (DPRs) provide a good alternative for AC’s precursor due to their continuous supply, availability in a large amount, and having good physiochemical properties such as high oxygen element and fixed carbon. This study provides a review of the potential of date palm residues (DPRs) as AC in adsorbing textile dyes and the recent technological advances adopted by researchers in producing DPR-based AC. This review article focuses solely on DPR and not on other biomass waste. This study presents a background review on date palms, textile dyes, biochar, and AC, followed by production methods of AC. In the literature, DPR was carbonized between 250 and 400°C. The conventional heating process employed an activation temperature of 576.85–900°C for physical activation and a maximum of 800°C for physicochemical activation. Chemical agents used in the chemical activation of DPR included NaOH, KOH, ZnCl2, H3PO4, and CaCl2. The maximum surface area obtained for DPR-AC was 1,092.34 and 950 m2/g for physical and chemical activation, respectively. On the other hand, conditions used in microwave heating were between 540 and 700 W, which resulted in a surface area of 1,123 m2/g. Hydrothermal carbonization (HTC) utilized carbonization temperatures between 150 and 250°C with pressure between 1 and 5 MPa, thus resulting in a surface area between 125.50 and 139.50 m2/g. Isotherm and kinetic models employed in the literature are also discussed, together with the explanation of parameters accompanied by these models. The conversion of DPR into AC was noticed to be more efficient with the advancement of activation methods over the years.

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“…These dyes are extracted from plants, and their effluents can be either recycled or their residues when mix with soil can act as fertilizer (Swami et al , 2014; El-Khatib et al , 2021). These colorants have wide spectrum of colors, but also by tinting these can also provide new shades that can be possible substitutes of synthetic dyes (Barani and Maleki, 2020). Hence, the revival of the art of natural dyes is now the global demand, particularly in the present pandemic situation (Prado et al , 2020).…”

Section: Introductionmentioning

confidence: 99%

Sustainable exploration of coffee extracts (coffea arabica l.) for dyeing of microwave-treated bio-mordanted cotton fabric

Adeel

Rehman

Amin

et al. 2022

PRT

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Purpose This study aims to observe the coloring efficacy of coffee-based natural brown colorant for cotton dyeing under microwave (MW) treatment. Design/methodology/approach The colorant extracted in particular (neutral and acidic) media was stimulated by MW treatment up to 6 min. Dyeing variables were optimized and 2–10 g/100 mL of sustainable anchors (mordants) have been used to get colorfast shades. Findings It has been found that un-irradiated acidic extract (RE) containing 5% of table salt at 80 °C for 50 min has given high color yield onto MW-irradiated cotton fabric (RC = 2 min). The utilization of 2% of Fe, 10% of tannic acid and 10% of sodium potassium tartrate before bio-coloration, whereas 4% of Fe, 10% of tannic acid and 6% of sodium potassium tartrate after bio-coloration has given good color characteristics. In comparison the application of 6% of pomegranate and turmeric extracts before bio-coloration and 6% of pomegranate and 10% of turmeric extracts after bio-coloration have given good color characteristics. New bio-mordants can be added to get more new colorfast shades. Research limitations/implications There is no research limitation for this work. New bio-mordants can be added to get more new colorfast shades. Practical implications This work has practical application for artisans, textile industry and handicrafts. It is concluded that colorant from coffee beans can be possible alternative of synthetic brown dyes and inclusion of MW rays for extraction and plant molecules as shade developers can make process more green. Social implications Socially, it has good impact on eco-system and global community because the effluent load is not carcinogenic in nature. Originality/value The work is original and contains value-added product for textiles and other allied fields.

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Red cabbage anthocyanins content as a natural colorant for obtaining different color on wool fibers

Cited by 9 publications

References 48 publications

Valorization of Sulfonated Kraft Lignin as a Natural Dye for the Sustainable Dyeing of Wool Fabrics: Effect of Peroxide Oxidation

Valorization of Sulfonated Kraft Lignin as a Natural Dye for the Sustainable Dyeing of Wool Fabrics: Effect of Peroxide Oxidation

Recent methods in the production of activated carbon from date palm residues for the adsorption of textile dyes: A review

Sustainable exploration of coffee extracts (coffea arabica l.) for dyeing of microwave-treated bio-mordanted cotton fabric

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