Collagen Fibril Orientation and Tear Strength across Ovine Skins

Variability of physical properties across hides and skins requires careful consideration when manufacturing goods from leather. Therefore, an understanding of the extent of this variation and its nanostructural basis is useful. Tear strength tests were performed on ovine leather from a grid of 81 po...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2013-12, Vol.61 (50), p.12327-12332
Main Authors: Basil-Jones, M. M, Edmonds, R. L, Cooper, S. M, Kirby, Nigel, Hawley, Adrian, Haverkamp, R. G
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
cattle
collagen
Collagen - chemistry
Collagen - metabolism
Fundamental and applied biological sciences. Psychology
leather
manufacturing
physical properties
Scattering, Small Angle
Shear Strength
sheep
Sheep - metabolism
Skin - chemistry
Skin - metabolism
X-radiation
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Summary:Variability of physical properties across hides and skins requires careful consideration when manufacturing goods from leather. Therefore, an understanding of the extent of this variation and its nanostructural basis is useful. Tear strength tests were performed on ovine leather from a grid of 81 positions on skins. Synchrotron small-angle X-ray scattering measurements were made from three positions on the skin, from 26 skins. The X-ray structural measurements are compared with tear strengths of the samples. It is found that the thickness normalized tear strength does not vary greatly between different positions on the skin, in contrast to bovine hides. There is more variation between different skins than within the same skin. The collagen fibril orientation and orientation index, which has previously been shown to be correlated with tear strength, do not vary significantly between the different sampling positions in ovine skins. The collagen fibril orientation varies through the thickness of the skin in a consistent way. The consistency of collagen orientation in ovine leather between different positions on the skin is in marked contrast to bovine hides and informs the use of ovine leather for manufacturing applications.
ISSN:0021-8561
1520-5118
DOI:10.1021/jf4038375