| Titre : |
The importance of elastin distribution and morphology in ovine leather |
| Type de document : |
texte imprimé |
| Auteurs : |
Richard L. Edmonds, Auteur ; Sue Cooper, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 22-30 |
| Note générale : |
Bibliogr. |
| Langues : |
Français (fre) |
| Catégories : |
Cuirs et peaux de moutons
Elastine
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Elastin is the main extensible protein which allows reversible stretching of the skin (Mier and Cotton, 1976). The elastic recoil of elastin is provided by the hydrophobic domains within the protein. When elastin is stretched the hydrophobic regions come in contact with water decreasing entropy. Then, when the tension is released, the hydrophobic regions reaggregate and expel the water, and the entropy increases which drives the movement (mecham, 1999). Elastin can be histologically viewed using the stains orcein, or resorcin and fuchsin. It appears as a web like, branched fibrillar structure, in which very fine fibres branch from the main web of fibres in the dermis and extend into the epidermis as barely resolvable "fibrelets" (Montagna and Parakkal, 1974). More elastin appears in the grain region in comparison to deeper within the skin with some elastin appearing again at the flesh side of the corium region. Elastin comprises about 2.7 % of the dry matter in the grain layer (Keller and Heidemann, 1989). |
| Note de contenu : |
- Location of elastin and response to conventional processing
- Materials and methods
- Image analysis
- Staining
- Results and discussion : Measurement - Impact of native and residual elastin on physical properties of the crust leather - Impact of native elastin on leather physical properties strength - Mottle - Looseness - Impact of variations in residual elastin after processing on leather physical properties strength - Mottle - Looseness - Suggested mechanism for the generation of mottle |
| Permalink : |
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in INDUSTRIE DU CUIR (IDC) > N° 2012/03 (04-05-06/2012) . - p. 22-30
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