| Titre : |
An assessment of differences between butt and belly regions of indian sheep skin |
| Type de document : |
texte imprimé |
| Auteurs : |
Dagnew Negasa, Auteur ; Punitha Velmurugan, Auteur ; Kalarical Janardhanan Sreeram, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 165-176 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cuirs et peaux -- Analyse
Cuirs et peaux de moutons
Peau -- Histologie
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Skins and hides undergo changes in biochemical and biophysical properties during the leather processing. Biochemical composi-tion varies with respect to different portions of the skin like butt, belly, shank, and neck. Belly part looseness is the main problem in leather making from sheepskin. To address this issue, the present work focuses on analysis of histology and biochemical prop-erties of butt and belly portion of sheepskin from the southern part of India. Globular proteins are relatively higher in the butt portion than the belly, whereas it is reverse in the case of fibrous proteins except collagen. Interestingly, the presence of proteo-glycans content in butt regions is significantly high compared to belly and in case of fat content it is reverse. Acid soluble colla-gen contribution is higher in butt region than belly and vice-versa in the case of pepsin soluble collagen. In general, collagen con-tent is significantly higher in butt than belly, which may be the major cause for the higher strength characteristics of butt regions. Cr2O3 content is higher in butt region than belly, which corroborates with protein content and its interaction with tanning agents. Distribution of pore size influences the breathability property of leather, which has been altered in all the unit operations. Scan-ning electron microscopy study reveals the morphology of the grain and cross-section of the skin changes during leather pro-cessing. Thus, this study aids in better understanding of the butt and belly regions of Indian sheepskin. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Sample preparation - Non-collagenous proteins analysis - Fat content and chromic oxide content analysis - Thermal stability determination and pore size distribution - Collagen extraction and analysis - Conformational analysis - Scanning electron microscopic analysis - Histological examination
- RESULTS AND DISCUSSION : Non-collagenous protein analysis - Fat content analysis - Thermal stability - Pore size distribution - Chromic oxide content analysis - Determination of collagen content - Scanning electron analysis - Histological examination |
| En ligne : |
https://drive.google.com/file/d/193mZgED0wKCjT-NWI09j55OhjbuB5McX/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24231 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CX, N° 6 (06/2015) . - p. 165-176
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