| Titre : |
Studies on alkaline protease from bacillus crolab MTCC 5468 for applications in leather making |
| Type de document : |
texte imprimé |
| Auteurs : |
Ammasi Ranjithkumar, Auteur ; Jayanthi Durga, Auteur ; Ramakrishnan Ramesh, Auteur ; Victor John Sundar, Auteur ; Chellan Rose, Auteur ; Chellappa Muralidharan, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 232-239 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Confitage Le confitage est une action biochimique effectuée au moyen de produits enzymatiques, qui a pour but de dégrader les fibres élastiques, contribuant ainsi à augmenter la souplesse du cuir. En outre, les enzymes complètent la dégradation des résidus épidermiques, donnant ainsi une fleur plus propre et plus lisse.
Cuirs et peaux -- Analyse
Cuirs et peaux de chèvres
Enzymes microbiennes
Peptidases
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Bating has become an indispensable operation of leather making to obtain good quality leather. Alkaline proteases are commonly used in leather manufacture in the process of unhairing and bating of hides/skins. In this study, experiments were carried out to test the bating efficacy of a new alkaline protease obtained from Bacillus crolab MTCC 5468 and compared with commercial bate. Impact of alkaline protease on porosity of enzymatically and conventionally unhaired goat skins, have been compared. New enzyme treated pelt was free from scud and pigments, with fine, clean, white, silkier grain and pliable. The result was superior to that of commercial bate treated pelts. The pore size/distribution and water vapor permeability was better than commercial bate and conventionally unhaired skins. Scanning electron microscopy and histological analysis of pelt obtained from new alkaline protease based process reveals complete removal of scud and better opening up of collagen fibers. Moreover, the collagen was not damaged and resulted in good quality of leather. The physio- chemical studies conclusively show that among the experiments, the skins unhaired with new alkaline protease was better in comfort properties than the conventionally unhaired skins as inferred by porosity measurements. Using new alkaline protease for bating led to better results than commercial bate. The study indicates improved efficiency of bacterial alkaline protease in leather processing for beam house applications. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Methods - Qualitative analysis for efficiency of bating - Analysis of unhairing and bating spent liquor - Chrome liquor analysis - Water vapor permeability measurement - Capillary flow porometry analysis - Histological analysis - Scanning electron microscopic analysis - Shrinkage temperature of the wet blue leathers - Physical and organoleptic properties of leather
- RESULTS AND DISCUSSION : Qualitative analysis of bating - Protein content in unhairing and bating spent liquors - Water vapor permeability - Capillary flow porometry analysis - Scanning electron micrograph analysis - Histological analysis - Physical and organoleptic properties of leather - chrome content |
| En ligne : |
https://drive.google.com/file/d/1Quyk6d9iv6UdGf9haqVeQgtytIIUdeo1/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28821 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 7 (07/2017) . - p. 232-239
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Studies on alkaline protease from bacillus crolab MTCC 5468 for applications in leather making in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 7 (07/2017)
