| Titre : |
Towards sustainable leather production vegetable tanning in non-aqueous medium |
| Type de document : |
texte imprimé |
| Auteurs : |
Narayana Reddy Gari, Auteur ; Gladstone Christopher Jayakumar, Auteur ; Kalarical Janardhanan Sreeram, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 97-102 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Développement durable
Solutions aqueuses (chimie)
Tannage végétal
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
The process of stabilizing the skin collagen against denaturation under heat, enzymes, stress etc. — popularly described as tanning is carried out either using metal ions (predominantly Cr(III)) or vegetable tannins derived from plant sources rich in polyphenols. Conventional leather processing is carried out in aqueous medium and hence the tannins have been extracted into water, sulfited to increase water solubility and then sold as spray dried extracts. Classical drawbacks include the low resistance of the extracts to bacteria and fungi, copious quantities of water required for extraction and tanning etc. In an attempt to make the leather processing sustainable, taking cue from other economically viable methods for tannin extraction, this paper looks at paradigm shift from water extraction of tannins to solvent based extraction, followed by leather processing in solvent. The results presented with ethanol as the green solvent highlights the significance of the developed method, in not only enhancing tannin to non-tannin ratio (T/NT), but also improving thermal stability of the tanned collagen at microscopic rat tail tendon (RTT) and macroscopic leather level. |
| Note de contenu : |
- EXPERIMENTAL : Materials and methods - Characterization of wattle extract
- RESULTS AND DISCUSSION : Tannin to non-tannin ratio - Functional groups - Size and stability - Stability against thermal and mechanical forces - Morphology of surface and cross-section - Notable advantages of tanning with ethanolic extract |
| En ligne : |
https://drive.google.com/file/d/1LAebEcW7VDJjd0ZN2TOT0QcVPU5mNe5f/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23807 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CX, N° 4 (04/2015) . - p. 97-102
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Towards sustainable leather production vegetable tanning in non-aqueous medium in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 4 (04/2015)
