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The microbiology of curing and tanning processes. Part VI. Collagenolytic activity of bacteria from raw and cured hides / D. R. Woods in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXVII (Année 1972)

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[article]
inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXVII (Année 1972) . - p. 217-225

Titre :	The microbiology of curing and tanning processes. Part VI. Collagenolytic activity of bacteria from raw and cured hides
Type de document :	texte imprimé
Auteurs :	D. R. Woods, Auteur ; R. L. Welton, Auteur ; J. A. Thomson, Auteur
Année de publication :	1972
Article en page(s) :	p. 217-225
Note générale :	Bibliogr.
Langues :	Américain (ame)
Catégories :	Bactéries Bains de trempe -- Analyse Collagène -- Détérioration Collagénolyse Contamination microbienne Cuirs et peaux -- Analyse Cuirs et peaux -- Microbiologie Cuirs et peaux -- Séchage
Index. décimale :	675.2 Préparation du cuir naturel. Tannage
Résumé :	The aerobic and anaerobic collagenolytic activity of bacterial popu-lations from three raw and four cured hide samples at 0.85, 2.34, 7.0, and 10.0 percent (w/v) NaC1 is described. The rate of denaturation of purified sait-soluble collagen was determined by the release of amino acids, and considerable collagenolytic activity was demonstrated in raw and cured hides. Collagenolysis was observed only under aerobic conditions and was highest at salt concentrations below 7.0 percent (w/v) NaCI. Raw hide bacteria showed the highest initial rate of collagenolysis. Bacteria from Batch 4 cured hides, which produced good leather with little decay, had the lowest collagenolytic activity. Tannery soak pit water prior to the addition of bides was contaminated with bacteria that could rapidly denature collagen at 0.85 percent (w/v) NaCI.
Note de contenu :	- METHODS : - Hide bacterial populations - Viable counts - Preparation of collagen - Screening for collagenolytic activity - RESULTS : - Collagenolytic activity of cured hide bacteria - Collagenolytic activity of raw hide bacteria - Collagenolytic activity of soak water - Table 1 : Bacterial contamination of hides and soak water
En ligne :	https://drive.google.com/file/d/10MfA0Bgdmt3FdA76QvwsG7J_oUFQMPiV/view?usp=drive [...]
Format de la ressource électronique :	Pdf
Permalink :	https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41547

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