[article]
| Titre : |
Studies on the stabilization of collagen using dialdehyde starch : Part I. Effect of autoclaving on dialdehyde starch |
| Type de document : |
texte imprimé |
| Auteurs : |
Swarna Vinodh Kanth, Auteur ; Balaraman Madhan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur ; S. Sadulla, Auteur ; T. Ramasami, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 444-453 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Polysaccharides are abundant, non-toxic, biodegradable natural polymers possessing a high degree of functionality. Starch, an inexpensive and renewable material is modified and widely used as a raw material in various industries. Starch on selective oxidation gives dialdehyde starch (DAS), a polymeric dialdehyde. In this investigation tanning system using autoclaved dialdehyde starch (ADAS) has been explored. Autoclaving of DAS is found to result in hydrolysis to lower molecular weight oligomeric species. These lower molecular weight species show better tanning properties compared to unautoclaved DAS. Similar effect has also been observed on the use of DAS at alkaline conditions. Thermal and enzymatic stability of ADAS tanned leather at varied concentration, pH, time and temperature have been studied. Leathers with a maximum shrinkage temperature of 88°C have been obtained while using ADAS at pH 10. The ADAS tanned leather also imparted highest degree of, stability to collagen against collagenase at pH 10. Scanning electron microscopic analysis showed a well-coated fiber matrix. The leathers obtained using ADAS as tanning agent have been compared with chrome tanned leathers for organoleptic properties. |
| En ligne : |
https://drive.google.com/file/d/1wQX26JG9XSgtHqb_LAsdaMCJt0wKEg9M/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3853 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 12 (12/2006) . - p. 444-453
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Studies on the stabilization of collagen using dialdehyde starch : Part I. Effect of autoclaving on dialdehyde starch in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 12 (12/2006)
