| Titre : |
Inhibiting lipolytic haloarchaeal damage on brine cured hide with halocin producer strains |
| Type de document : |
texte imprimé |
| Auteurs : |
Meral Birbir, Auteur ; S. Erylmaz, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 69-72 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Bactériocines Les bactériocines sont une famille de peptides ou protéines synthétisés naturellement par certaines bactéries. Une bactériocine consiste généralement en un composé protéique de 20 à 60 acides aminés.
Les bactériocines ne sont pas des antibiotiques mais elles possèdent des propriétés antibiotiques :
- Elles peuvent être bactériocides, c'est-à -dire éliminer certains micro-organismes.
- Elles peuvent être bactériostatiques, c'est-à -dire inhiber la croissance de certains micro-organismes.
Cuirs et peaux -- Conservation
Inhibition microbienne
LipasesLes lipases sont des enzymes hydrosolubles capables d'effectuer l'hydrolyse de fonctions esters et sont spécialisées dans la transformation de triglycéride en glycérol et en acides gras (lipolyse). À ce titre, elles constituent une sous-classe des estérases.
Lipolyse
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The Kaldırım and Kayacık Salterns of Tuz Lake in Central Anatolia are the main salt sources of Turkey. 55% of the salt requirements of Turkey is supplied from these salterns. 492 000 and 620 000 tons of salt were produced from Kaldırım and Kayacık Salterns in 2004, respectively. Crude salt extracted from these salt sources is commonly used in hide preservation. Lipolytic extremely halophilic Archaea found in the salt may reduce hide quality. Therefore, a microbial survey was conducted to examine lipolytic activities of the strains isolated from Kaldırım and Kayacık Salterns and determine whether or not halocins which were produced by the strains of Kaldırım and Kayacık Salterns may be used to inhibit lipolytic haloarchaeal strains in brine solutions. The levels of lipase producer strains in the both salterns was found to be almost similar. 39% of Kaldırım Saltern’s strains and 43% of Kayacık Saltern’s strains produced lipase. 89% of Kaldırım Saltern’s strains and 29% of Kayacık Saltern’s strains produced halocins effective against each other. It was found that lipase negative halocin producers of both Kaldırım and Kayacık Salterns were able to inhibit lipase positive strains in these salterns.
Hence, it is recommended that lipase negative halocin producers or their halocin extracts may be used in preventing the haloarchaeal deterioration that can occur during brine curing of hides when using crude salt from whatever source. |
| Note de contenu : |
- Growth conditions of extremely halophilic strains
- Lipase activity
- Halocin activity
- Table 1 : Lipase activities and sensitivities of Kaldırım Saltern strains against Kaldırım Saltern halocin producers
- Table 2 : Lipase activities and sensitivities of Kayacık Saltern strains against Kayacık Saltern halocin producers |
| En ligne : |
https://drive.google.com/file/d/1Vt2v6Xm7xD0XM_JcJjeaNYf6-EoS025q/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39036 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 2 (03-04/2007) . - p. 69-72
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Inhibiting lipolytic haloarchaeal damage on brine cured hide with halocin producer strains in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 2 (03-04/2007)
