| Titre : |
Factors affecting mass transfer of protease in pelt during enzymatic bating process |
| Type de document : |
texte imprimé |
| Auteurs : |
Ying Song, Auteur ; Siqi Wu, Auteur ; Qian Yang, Auteur ; Hao Liu, Auteur ; Yunhang Zeng, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
10 p. |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| 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
Electrostatique
Peptidases
Poids moléculaires
Tension superficielle
Transfert de masse
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Bating pelt with protease is an important process, which removes unwanted non-collagenous proteins from the pelt and moderately disperse hide collagen network. However, the grain surface, may be excessively hydrolyzed during bating due to the longer retention time of protease in the grain than in the middle layer caused by the low mass transfer rate of protease in pelt. Here, the effects of protease dosage, common auxiliaries and molecular weight of protease on protease transfer during bating were investigated so that we can find the key points to avoid excessive collagen damage, particularly in the grain. Observably, increasing protease dosage led to faster protease transfer and softer leather, but along with more considerable grain damage. Using penetrating agent JFC (fatty alcohol-polyoxyethylene ether) and ammonium sulfate enhanced protease transfer and simultaneously alleviated collagen damage due to the decrease in interfacial tension and electrostatic attraction between protease and pelt, respectively. Additionally, proteases with lower molecular weight transferred faster in pelt, which suggests that a potential strategy to solve the conflict between the mass transfer and the reaction of protease in pelt might be to produce/employ smaller bating proteases. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Effect of protease dosage on bating performance - Effect of auxiliaries on bating performance of protease - Effect of molecular weight of protease on its transfer rate during bating
- RESULTS AND DISCUSSION : The effect of protease dosage on bating performance - The effect of auxiliaries on bating performance - The effect of molecular weight of protease on its mass transfer rate during bating |
| DOI : |
https://doi.org/10.1186/s42825-019-0007-7 |
| En ligne : |
https://link.springer.com/content/pdf/10.1186/s42825-019-0007-7.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36949 |
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 1 (Année 2019) . - 10 p.
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Factors affecting mass transfer of protease in pelt during enzymatic bating process in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
