[article]
| Titre : |
Single step hair removal and fiber opening process : Simultaneous and successive addition of protease and a-amyiase |
| Type de document : |
texte imprimé |
| Auteurs : |
Palanisamy Thanikaivelan, Auteur ; B. Chandrasekaran, Auteur ; C. K. Bharath, Auteur ; Subramani Saravanabhavan, Auteur ; C. Anandhi, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 388-398 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The use of enzyme based products for many areas in leather making has found its way into commercial practice. Proteolysis and a-amylase enzymes have found use in hair removal and fiber opening, producing comparable results to the conventional practice of lime and sulfide based dehairing and fiber opening. However, this process is a two step sequence in which dehairing is performed by the proteolysis enzyme followed by fiber opening through a-amylase. This study aims at transforming the two-step method into a single-step process, while maintaining environmental sustainability. Experiments were carried out using various percentages of dehairing enzyme and a-amylase following successive, simultaneous addition. The order of addition of the enzymes is also varied. Standardization experiments at bulk level were carried out to obtain best results. The leathers obtained from simultaneous addition of enzymes (1 % protease and 0.75 % a-amylase) were comparable to that of the conventionally produced leathers in terms of physical properties and appearance. The input-output analysis shows complete dehairing and fiber opening, which is also confirmed through scanning electron micrographs. There is reasonable reduction in water consumption, wastewater discharge, COD and TS loads when compared to the conventional leather processing. |
| En ligne : |
https://drive.google.com/file/d/1jP8zEP1uDaan8sy04ImHihO5DjlTXhUI/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3969 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 11 (11/2006) . - p. 388-398
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