| Titre : |
Glycine-betaine working at the core of the hair fibre |
| Type de document : |
texte imprimé |
| Auteurs : |
C. L. Gummer, Auteur ; Carole Gherardi, Auteur ; Piera Pericu, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 8-12 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Bétaïnes
Cheveux -- Soins et hygiène
Glycine
Produits capillaires
|
| Index. décimale : |
668.5 Parfums et cosmétiques |
| Résumé : |
Hair fibres have no active or renewable protective mechanisms, yet hair provides an essential beauty and protective function where each fibre may need to last several years. Glycine-betaine (GENENCARE OSMS BA by DuPont Industrial Biosciences), well known for its protein protection and osmolyte properties has established skin benefits and has the potential to protect and improve the protein structure of hair as it experiences the rigours of everyday cosmetic routines.
Using a variety of analytical HPLC and HPDSC (High Pressure Differential Scanning Calorimetry), molecule vibration and rotation (Raman spectroscopy) and mechanical (tensile testing techniques), it has been demonstrated that Glycine-betaine is a natural component of human hair. In addition, it has been shown that it can be delivered to the cortex of the hair using typical hair care formulations. When present in the cortex, Glycine-betaine helps to influence the relationship between intermediate filaments (IF's) and intermediate filament associated proteins (IFAP's) resulting in improved hair strength. |
| Note de contenu : |
- Glycine-betaine, a natural component of hair
- Delivery of glycine-betaine from a shampoo in vivo
- Penetration of glycine-betaine in to the fibre sub structure
- Measuring the effect of glycine-betaine on cortex proteins
- The effect of glycine-betaine on hair tensile properties (strength)
- FIGURES : 1. Increase of glycine-betaine content in hair after wash with shampoo with 5% glycine-betaine LSMEANS from GLM (General Linear Model) with FIXED and RANDOM effects Tukey Pairwise Comparison show a significant effec of the treatment (p=0;036) - 2. Raman confocal microscopy study indicates that glycin-betaine infiltrates into hair shaft and covers evenly its cross-section - 3. Mean fluorescence intensity (a.u.) and pictures of hair cortex before and after shampoo washing - 4. Cross section of a cortical cell showing intermediate filaments (white dots) embedded in a matrix of intermediate filament associated proteins - 5. Reduction in enthalpy of normal virgin hair washed with 2% aqueous glycine-betaine for 2 minutes - 6. Increased elastic modulus and stress at 15% elongation after 15 minutes treatment with 5% glycine-betaine |
| En ligne : |
https://drive.google.com/file/d/1VE_70gh1KLoLknIxkqFYnCPpIgHTcLVm/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29386 |
in SOFW JOURNAL > Vol. 143, N° 11 (11/2017) . - p. 8-12
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Glycine-betaine working at the core of the hair fibre in SOFW JOURNAL, Vol. 143, N° 11 (11/2017)
