Green, Eco-Friendly, and Waterless Anti-Felting Process by Three Different DESs, Compared with Chlorinated Anti-Felting Process to Produce Superwash Woolen Goods

Boostani, Bahman; Bidoki, Seyed Mansour; Fattahi, Saeid

doi:10.1007/s12221-023-00411-5

Cited by 3 publications

(1 citation statement)

References 71 publications

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“…Moreover, the use of DES could provide a sustainable superwash treatment option with the ability to preserve mechanical fibre properties. The possibility of using DESs for the superwash treatment of wool was mentioned for the first time in 2022 in a review article by El-Sayed [31] and was recently studied by Boostani with the conventional chlorinated anti-felting process to produce superwash wool [33].…”

Section: The Solubility Of Wool Keratin In Des and Extraction Yieldsmentioning

confidence: 99%

Valorization of waste wool to keratin with a green solvent based on a deep eutectic mixture of choline chloride and lactic acid

Anugwom,

Rissanen,

Ora

et al. 2024

Preprint

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Waste wool, a by-product of sheep husbandry, is primarily composed of keratin, which has potential use in cosmetic products, biotechnology and medical applications. Traditional chemical methods for keratin extraction face limitations due to health and environmental concerns, and thus, green alternatives such as deep eutectic solvents (DESs) have been developed. The aim of the present study was to determine whether a natural DES composed of choline chloride and lactic acid can be used to extract keratin from sheep wool. The dissolution and keratin yield were investigated under different reaction times, temperatures, and wool-to-DES ratios. Fractions of water-soluble keratin and water-insoluble keratin aggregates were obtained by dialysis, centrifugation, and drying. The results showed that both the dissolution of wool and the yield of recovered keratin increased as the reaction time and temperature increased from 1 to 8 h and from 80 to 110◦C, respectively.With the longest reaction time of 8 hours and the highest temperature of 110◦C, the yield of water-soluble keratin increased to 23 %. Characterizations revealed that DES detached first the cuticular scales from the surface of wool fibres and subsequently degraded wool cortex layer. The extracted water-soluble keratin retained the characteristic amide structure of wool, but the secondary structure of keratin was converted to cross-β sheet form. Moreover, it had a narrow size distribution and a molecular weight of 10 kDa. The results of this study indicate that the proposed DES can be used as a green solvent for recovering keratin from sheep wool.

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Section: The Solubility Of Wool Keratin In Des and Extraction Yieldsmentioning

confidence: 99%

Valorization of waste wool to keratin with a green solvent based on a deep eutectic mixture of choline chloride and lactic acid

Anugwom,

Rissanen,

Ora

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Valorization of Waste Wool to Keratin with a Green Solvent Based on a Deep Eutectic Mixture of Choline Chloride and Lactic Acid

Pääkkönen,

Rissanen,

Ora

et al. 2024

Waste Biomass Valor

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Waste wool, a by-product of sheep husbandry, is primarily composed of keratin, which has potential use in cosmetic products, biotechnology and medical applications. Traditional chemical methods for keratin extraction face limitations due to health and environmental concerns, and thus, green alternatives such as deep eutectic solvents (DESs) have been developed. The aim of the present study was to determine whether a natural DES composed of choline chloride and lactic acid can be used to extract keratin from sheep wool. The dissolution and keratin yield were investigated under different reaction times, temperatures, and wool-to-DES ratios. Fractions of water-soluble keratin and water-insoluble keratin aggregates were obtained by dialysis, centrifugation, and drying. The results showed that both the dissolution of wool and the yield of recovered keratin increased as the reaction time and temperature increased from 1 to 8 h and from 80 to 110 $$^{\circ }$$ ∘ C, respectively. With the longest reaction time of 8 hours and the highest temperature of 110 $$^{\circ }$$ ∘ C, the yield of water-soluble keratin increased to 23 %. Characterizations revealed that DES detached first the cuticular scales from the surface of wool fibres and subsequently degraded wool cortex layer. The extracted water-soluble keratin retained the characteristic amide structure of wool, but the secondary structure of keratin was converted to cross-$$\beta$$ β sheet form. Moreover, it had a narrow size distribution and a molecular weight of 10 kDa. The results of this study indicate that the proposed DES can be used as a green solvent for recovering keratin from sheep wool. Graphical Abstract

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Innovative integration of chitosan biopolymer for felt-free woolen fabric: A synergistic approach with digital textile printing

Kaur,

Kumar,

Singh

2024

Sustainable Chemistry and Pharmacy

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Green, Eco-Friendly, and Waterless Anti-Felting Process by Three Different DESs, Compared with Chlorinated Anti-Felting Process to Produce Superwash Woolen Goods

Cited by 3 publications

References 71 publications

Valorization of waste wool to keratin with a green solvent based on a deep eutectic mixture of choline chloride and lactic acid

Valorization of waste wool to keratin with a green solvent based on a deep eutectic mixture of choline chloride and lactic acid

Valorization of Waste Wool to Keratin with a Green Solvent Based on a Deep Eutectic Mixture of Choline Chloride and Lactic Acid

Innovative integration of chitosan biopolymer for felt-free woolen fabric: A synergistic approach with digital textile printing

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