| Titre : |
Molecular level understanding of tanning using an organo-zirconium complex |
| Type de document : |
texte imprimé |
| Auteurs : |
Balaraman Madhan, Auteur ; Balachandran Unni Nair, Auteur ; Jonnalagadda Raghava Rao, Auteur ; N. N. Fathima, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 445-450 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Organo-zirconium (Organozir) is a zirconium tanning salt complexed with organic moieties. The development of this tanning salt as a potential substitute for chromium has been reported in our earlier work. In the present investigation, studies to understand the mechanism of tanning using organozir at the molecular level have been attempted. The thermal and enzymatic stability of collagen brought about by organozir have been studied using hydrothermal shrinkage measurement, differential scanning calorimetry (DSC) and hydroxyproline estimation respectively. It has been observed that collagen tanned with organozir exhibits a hydrothermal shrinkage temperature of 94°C. The denaturation peak temperature observed from DSC, which indicates the helix → coil transition of collagen, also occurs at 94°C. Mechanistic insights into the stability of collagen against collagenase have been addressed by studying the conformational changes occurring in collagen as a result of interaction with organozir using circular dichroism (CD). The interaction with organo-zirconium complex results only in minor changes in the triple helical conformation of collagen. This indicates that organozir stabilizes collagen against collagenase degradation by blocking the active site in collagen. |
| En ligne : |
https://drive.google.com/file/d/1qNz8q9ASgpqGjcyvyJwUrruNK4OctFSe/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4167 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 11 (11/2003) . - p. 445-450
Aller sur edunet
Accueil
Molecular level understanding of tanning using an organo-zirconium complex in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 11 (11/2003)
