A sustainable solvent based on lactic acid and <scp>l</scp>-cysteine for the regeneration of keratin from waste wool

Shavandi, Amin; Jafari, Hafez; Zago, Erika; Hobbi, Parinaz; Nie, Lei; Laet, Nelson De

doi:10.1039/d0gc04314a

Cited by 40 publications

(26 citation statements)

References 24 publications

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“…This study [22] established the functionality of lactic acid and L-cysteine utilization in the production of a nontoxic and biodegradable DES that can facilitate significant keratin recovery from wool without compromising the keratin structure [22]. Indeed a previous study has shown that the use of this novel DES has the potential of producing keratin composed of proteins with high molecular masses [22]. In the current study, we are therefore seeking to optimize the recovery of keratin from waste coarse wool using this new DES composed of lactic acid and Lcysteine.…”

Section: Introductionmentioning

confidence: 87%

“…presence of a peak at around 1040 cm -1 in keratin samples is due to the presence of cysteine-S-sulfonated residues in the recovered keratin [22,40]. Hence, the result showed that keratin regeneration from wool using L-cysteine and lactic acid is a safe method for preserving the protein structure of keratin; however, choosing a proper experimental parameter, particularly dissolution temperature may be considered in large-scale applications.…”

Section: Characterization Of the Obtained Keratinsmentioning

confidence: 96%

“…We recently developed a new, efficient and biocompatible DES composed of lactic acid and L-cysteine for wool dissolution [22]. This study [22] established the functionality of lactic acid and L-cysteine utilization in the production of a nontoxic and biodegradable DES that can facilitate significant keratin recovery from wool without compromising the keratin structure [22]. Indeed a previous study has shown that the use of this novel DES has the potential of producing keratin composed of proteins with high molecular masses [22].…”

Section: Introductionmentioning

confidence: 95%

“…% of the wool was shown to be completely dissolved in the DES at high temperatures of up to 125 °C [21]. We recently developed a new, efficient and biocompatible DES composed of lactic acid and L-cysteine for wool dissolution [22]. This study [22] established the functionality of lactic acid and L-cysteine utilization in the production of a nontoxic and biodegradable DES that can facilitate significant keratin recovery from wool without compromising the keratin structure [22].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced keratin extraction from wool waste using a deep eutectic solvent

et al. 2022

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Section: Introductionmentioning

confidence: 87%

Section: Characterization Of the Obtained Keratinsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Enhanced keratin extraction from wool waste using a deep eutectic solvent

et al. 2022

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“…The intrinsic nature of establishing the H-bond also confers unique properties that apply to the electro-polishing of metals, metal electrodeposition and metal extraction [29]. DESs should be extended to several new biomasses to implement the biorefinery scenario with new solutions and unexplored options for achieving new base chemicals [156].…”

Section: Conclusion: Perspectives and Criticisms On The Use Of Desmentioning

confidence: 99%

Deep Eutectic Solvents for the Valorisation of Lignocellulosic Biomasses towards Fine Chemicals

Scelsi

Angelini

Pastore

2021

Biomass

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The growing demand for energy and materials in modern society pushes scientific research to finding new alternative sources to traditional fossil feedstocks. The exploitation of biomass promises to be among the viable alternatives with a lower environmental impact. Making biomass exploitation technologies applicable at an industrial level represents one of the main goals for our society. In this work, the most recent scientific studies concerning the enhancement of lignocellulosic biomasses through the use of deep eutectic solvent (DES) systems have been examined and reported. DESs have an excellent potential for the fractionation of lignocellulosic biomass: the high H-bond capacity and polarity allow the lignin to be deconvolved, making it easier to break down the lignocellulosic complex, producing a free crystallite of cellulose capable of being exploited and valorised. DESs offer valid alternatives of using the potential of lignin (producing aromatics), hemicellulose (achieving furfural) and cellulose (delivering freely degradable substrates through enzymatic transformation into glucose). In this review, the mechanism of DES in the fractionation of lignocellulosic biomass and the main possible uses for the valorisation of lignin, hemicellulose and cellulose were reported, with a critical discussion of the perspectives and limits for industrial application.

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Valorization of biomass for food protein via deep eutectic solvent extraction: Understanding the extraction mechanism and impact on protein structure and properties

Hanafi,

Anwar,

Saari

2024

Food Frontiers

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The conventional techniques for protein extraction from biomass are not fully aligned with sustainability goals, so it is important to look for some alternate solutions. By simultaneously extracting both soluble and insoluble proteins, deep eutectic solvents (DESs) offer a viable method for valorizing protein‐rich biomass from a variety of sources. Notably, the molecular crowding effects of DESs may have helped unfolded proteins acquire compact and stable conformations, facilitating solubilization and effective extraction. However, there is still a lack of information regarding how DESs interact with proteins and affect the structure and properties of the recovered proteins. To enable their widespread usage as a sustainable method for extracting dietary proteins, the safety of DES‐extracted proteins must also be addressed. In this paper, we review the state of the science in DES‐mediated protein extraction, focusing on the extraction mechanism and the interactions between DESs and proteins. Additionally, important aspects of DES‐mediated protein extraction that could affect the structure, technofunctional, nutritional characteristics, and safety of extracted protein are explored. DES‐based protein extraction could be helpful to valorize different biomasses for the production of food proteins due to the specific features.

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A sustainable solvent based on lactic acid and l-cysteine for the regeneration of keratin from waste wool

Abstract: Keratin dissolution is the first step toward reusing protein-rich biomass such as waste wool, hair, and feather.

Cited by 40 publications

References 24 publications

Enhanced keratin extraction from wool waste using a deep eutectic solvent

Enhanced keratin extraction from wool waste using a deep eutectic solvent

Deep Eutectic Solvents for the Valorisation of Lignocellulosic Biomasses towards Fine Chemicals

Valorization of biomass for food protein via deep eutectic solvent extraction: Understanding the extraction mechanism and impact on protein structure and properties

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