Removal of collagens VI and XII by beamhouse chemistry / Paul L. Kronick in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 6 (06/1991)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVI, N° 6 (06/1991) . - p. 209-224 Titre : Removal of collagens VI and XII by beamhouse chemistry Type de document : texte imprimé Auteurs : Paul L. Kronick, Auteur ; Beverly E. Maleeff, Auteur ; Matthew P. Dahms, Auteur Année de publication : 1991 Article en page(s) : p. 209-224 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Hides are prepared in the beamhouse for tanning by removing nonfibrous proteins from among the collagen fibrils. We now know that some of this proteins also contains type of collagen that do not form fibrils. This material might be expected to resist the drastic chemical treatments of the beamhouse, as does the collagen type 1 of the fibers. Using immunochemical stains, we have examined the persistence of two such nonfibrillar collagens, types 6 and 12, through simulatedliming, bating (trypsin digestion), and pickling. Both collagens persisted after treatment with lime, but the antigenic site on the molecule of the collagen type 12 was removed by trypsin. Collagen type 6 resisted all the treatments. Beamhouse treatments eliminate at least part of the type 12 molecule, which is found on the surfaces of the fibrils, but leaves type 6, which is present in very fine strands that connect the fibrils of type 1/3/5. These remnant proteins can complicate the use of syntans, fatliquors, and dyes, which act on the surfaces of the fibrils. En ligne : https://drive.google.com/file/d/135lHcje7sfA5oZFw2S1QvsAio6934iBE/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8495 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
006881	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Solvent preservation of pigskins / Peter R. Buechler in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXII (Année 1987)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXII (Année 1987) . - p. 200-211 Titre : Solvent preservation of pigskins Type de document : texte imprimé Auteurs : Peter R. Buechler, Auteur ; John S. Fisher, Auteur ; Matthew P. Dahms, Auteur ; Mary V. Hannigan, Auteur Année de publication : 1987 Article en page(s) : p. 200-211 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Some 90 million butcher hogskins per year are potentially available and can be utilized for leather manufacture. For optimum utilization with a minimum waste problem, a beamhouse and processing plant central to the currently concentrated pork packing plants is envisioned. Fresh pigskins brought to this facility would receive beamhouse treatment followed by a preservation process and could then be shipped to pigskin leather manufacturers wherever they are located. Studies of solvent dehydration preservation processes have shown that these processes can be used after bating. Dehydrated bated stock offers a number of advantages: (1) A light-weight product, one-sixth the shipping weight of fleshed raw pigskins is obtained. (2) The stocks keep indefinitely under most ambient conditions, unless contacted by liquid water. (3) The hydrated stock can be graded and sold on the basis of its visible surface defects. (4) Water can be easily added to the stock with no adverse effect on subsequent tanning. (5) Leathers from the dehydrated pigskins subsequently re-wet and tanned have fewer oil spots and better chrome distribution than control leathers. En ligne : https://drive.google.com/file/d/1YK9HdODtCvLnnNWHHL7smomUueSUDSL_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9033 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
008087	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 2 / 2)