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Grape Pomace ( Vitis vinifera L.) Waste Valorization: Assessing Its Potential as a Sustainable Natural Dye for Textiles Applications

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  • Filipa D. Fonseca

    (Polytechnic Institute of Coimbra, Coimbra Institute of Engineering, Department of Chemical and Biological Engineering, R. Pedro Nunes, Quinta da Nora, 3030-199 Coimbra, Portugal
    CEFT—Transport Phenomena Research Center, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
    SISus—Laboratory of Sustainable Industrial Systems, Coimbra Institute of Engineering, Rua Pedro Nunes—Quinta da Nora, 3030-199 Coimbra, Portugal
    CERNAS—Research Centre for Natural Resources, Environment and Society, Coimbra Agriculture School, Bencanta, 3045-601 Coimbra, Portugal)

  • Lyudmyla Symochko

    (CERNAS—Research Centre for Natural Resources, Environment and Society, Coimbra Agriculture School, Bencanta, 3045-601 Coimbra, Portugal
    Faculty of Biology, Uzhhorod National University, Voloshyna Str. 32, 88000 Uzhhorod, Ukraine
    Faculty of Sciences and Technology, Department of Life Siences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal)

  • M. Nazaré Coelho Pinheiro

    (Polytechnic Institute of Coimbra, Coimbra Institute of Engineering, Department of Chemical and Biological Engineering, R. Pedro Nunes, Quinta da Nora, 3030-199 Coimbra, Portugal
    CEFT—Transport Phenomena Research Center, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
    SISus—Laboratory of Sustainable Industrial Systems, Coimbra Institute of Engineering, Rua Pedro Nunes—Quinta da Nora, 3030-199 Coimbra, Portugal
    CERNAS—Research Centre for Natural Resources, Environment and Society, Coimbra Agriculture School, Bencanta, 3045-601 Coimbra, Portugal)

Abstract

The present study aimed to explore the textile dyeing capability using dyes derived from grape pomace. Extractions were conducted with water at different pH levels and with a water/ethanol solution. Cotton (natural and cationized) and wool were employed in the dyeing process for varying durations (100 and 200 min). The colorimetric and fastness properties, in terms of washing (with hot and cold water) and exposure to natural light, were evaluated. The final color evaluation was performed using Δ E *, a parameter quantifying the magnitude of a color difference by comparing the L * a * b * color coordinates of the CIELAB system of the dyed samples with those of the control. The hues obtained on the fabrics resulted in uniform and earthy colors. However, the cationized cotton substrate showed the highest Δ E* values for all conditions used in obtaining grape pomace extracts, in the range of 33.91 to 37.98. This suggests that the surface treatment enhanced dye uptake, while organic cotton achieved a lighter earthy color. Natural dyeing using grape pomace presents a sustainable, ecological, and non-toxic alternative for textile dyeing, resulting in unique and earthy tones with commercial potential while promoting the sustainable use of natural resources and environmental preservation. The key to achieving sustainable development lies in waste reduction and valorization, along with the adoption of conscious consumption.

Suggested Citation

  • Filipa D. Fonseca & Lyudmyla Symochko & M. Nazaré Coelho Pinheiro, 2024. "Grape Pomace ( Vitis vinifera L.) Waste Valorization: Assessing Its Potential as a Sustainable Natural Dye for Textiles Applications," Sustainability, MDPI, vol. 16(8), pages 1-17, April.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:8:p:3167-:d:1373195
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    References listed on IDEAS

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    1. SWIATKIEWICZ Olgierd, 2021. "The Wine Sector Management In Portugal: An Overview On Its Three-Dimensional Sustainability," Management of Sustainable Development, Lucian Blaga University of Sibiu, Faculty of Economic Sciences, vol. 13(1), pages 39-48, June.
    2. Sofia Plakantonaki & Kyriaki Kiskira & Nikolaos Zacharopoulos & Ioannis Chronis & Fernando Coelho & Amir Togiani & Konstantinos Kalkanis & Georgios Priniotakis, 2023. "A Review of Sustainability Standards and Ecolabeling in the Textile Industry," Sustainability, MDPI, vol. 15(15), pages 1-18, July.
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