| Titre : |
Hydration in matrix stabilization of collagen fibres : relevance to mechanistic insight into tanning |
| Type de document : |
texte imprimé |
| Auteurs : |
Balaraman Madhan, Auteur ; T. Ramasami, Auteur ; Balachandran Unni Nair, Auteur ; V. Subramanian, Auteur ; Jonnalagadda Raghava Rao, Auteur ; N. N. Fathima, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 263-272 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Quantitative understanding of fundamental processes leading to tanning of collagenous tissues has attracted renewed interest in recent times. Although it is traditional to relate formation of crosslinks formed at angstromunit dimensions to increases in the hydrothermal stability of collagenous matrices, further understanding of long range order in collagen supra assembly induced by tanning molecule in nano scale dimensions is becoming more evident. Increases in hydrothermal stability of rat tail tendon fibres induced by precursors of vegetable tannins like catechin, quercetin and gallic acid have now been correlated. Molecular modeling approaches have been employed to simulate and estimate possible net increase in hydrogen bonding energies resulting from binding of collagen with the precursors of vegetable tannins. The stability of collagen fibres against degradation by collagenase has been previously quantitatively related to inhibition of collagenase by tannin molecules. Now an attempt has been made to understand the role of hydration and solvation phenomena in the theory of tanning. A series of thermochemical and NMR investigations have been made with a view to understand at least semi-quantitatively, the role of structure and dynamics of water around collagenous fibres. The binding energies of the complexes of tannin precursors with the collagen-like peptide determined using molecular modeling study has been correlated with the denaturation temperature of tanned collagen and the relaxation times (T1 and T2) of water in tanned fibres. Experimental evidence for the influence of catechin, quercetin and gallic acid on structure and dynamics of free and bound water in collagen fibres has been presented. |
| En ligne : |
https://drive.google.com/file/d/1Bdj_V5zMF4ugePRNnbyZcUVdRGCkgKnH/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4144 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 7 (07/2003) . - p. 263-272
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Hydration in matrix stabilization of collagen fibres : relevance to mechanistic insight into tanning in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 7 (07/2003)
