New anionic surface‐active agent derived from wool proteins for hair treatment

Barba, Clara; Scott, Sonya M.; Kelly, Robert; Parra, J. L.; Coderch, L.

doi:10.1002/app.31065

Cited by 7 publications

(8 citation statements)

References 57 publications

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“…; Barba et al . 2010b, c). Contact angle measurements are affected by several factors, such as surface chemistry heterogeneity, roughness, surface deformability, surface configuration changes, surface polarity, and adsorption and desorption.…”

Section: Resultsmentioning

confidence: 99%

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Properties of alkaline‐hydrolyzed waterfowl feather keratin

Tsuda

Nomura

2013

Animal Science Journal

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The properties of hydrolyzed feather keratin (HFK) were compared to those of hydrolyzed wool keratin (HWK) with the aim of developing better ways to utilize feather keratin waste. Amino acid analysis showed that HFK contained more hydrophobic amino acids did than HWK. Although gel permeation chromatography indicated that HFK and HWK had more low-molecular weight peptides than their intact sources, Fourier transform infrared spectroscopy indicated that both hydrolyzed keratins retained their original secondary structure. The physical properties of HFK were evaluated by treating HFK to human hair fibers. HFK treatment enhanced significantly the surface hydrophobicity and strength of fibers, and HFK was more permeable into hair fibers. These results suggest that HFK is suitable for industrial applications to improve fibers. In addition, HFK may be suitable for raw material of products requiring both flexibility and hydrophobicity, such as films and biodegradable plastics.

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Section: Resultsmentioning

confidence: 99%

“…Barba et al . (, 2010a, 2010b, 2010c) studied the beneficial effects of wool proteins and peptides on hand care and hair care ingredients. Lanzilotta et al .…”

Section: Introductionmentioning

confidence: 99%

Properties of alkaline‐hydrolyzed waterfowl feather keratin

Tsuda

Nomura

2013

Animal Science Journal

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“…and the interaction energy between the fi bre and the solution (Barba et al 2009). Because bleaching changes some of these factors (Zviak & Mill é quant 2005), the surface charge of hair fi bres following several rounds of bleaching is expected to be altered, thus explaining the differences in peptide interaction affi nity observed in the present study.…”

Section: Pdi-catalysed Peptide Binding To Over-bleached Hairmentioning

confidence: 99%

Protein disulphide isomerase-mediated grafting of cysteine-containing peptides onto over-bleached hair

Fernandes

Cavaco‐Paulo

2011

Biocatalysis and Biotransformation

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The ability of Protein disulphide isomerase (PDI) to promote the grafting of two cysteine-containing peptides onto hair was investigated in order to develop an alternative treatment for over-bleached hair. The studied peptides were designed based on human keratin and human lung surfactant proteins and were linked to a fl uorescent dye to facilitate visualisation of the grafting process and to assess hair penetration. The ability of the peptides to restore mechanical and thermal properties lost by repeated bleaching treatments was also studied. After eight bleaching treatments, hair samples displayed 42% less mechanical resistance, coupled with a decrease in α -helix denaturation enthalpies and temperatures. Hair surface damage following bleaching was visualized by scanning electron microscopy. Addition of PDI to the treatment formulations promoted peptide attachment to the hair via disulphide bonds, facilitating their penetration into the hair cortex, as observed by fl uorescence microscopy. The proposed peptide treatment resulted in an increase in α -helix denaturation enthalpy in over-bleached hair, as well as an increase in both Young ' s modulus and tensile strength. Thus, mechanical and thermal properties were improved after the peptide treatment in the presence of PDI; suggesting that the formulations presented in this work are promising candidates for hair-care applications.

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“…It is known that the strength and elasticity of hair decreases as a result of bleaching and permanent wave treatment [11,30,[34][35][36]. It has also been reported that the strength and elasticity of hair can be improved by treating with hydrolyzed proteins or peptides [20,[37][38][39][40].…”

Section: Effect Of Hydrolyzed Keratin On Permanent Wavingmentioning

confidence: 99%