Titre : |
Progress on the use of gaseous sulfur dioxide to preserve hides. The effect of concentration and exposure time |
Type de document : |
texte imprimé |
Auteurs : |
William J. Hopkins, Auteur ; David G. Bailey, Auteur |
Année de publication : |
1981 |
Article en page(s) : |
p. 436-446 |
Note générale : |
Bibliogr. |
Langues : |
Américain (ame) |
Index. décimale : |
675 Technologie du cuir et de la fourrure |
Résumé : |
Previous studies showing that gaseous sulfur dioxide can be used to preserve freshly flayed hides for at least 28 days have been continued. The advantages of this preservation procedure are that it reduces dissolved salt pollution in tannery effluents and requires no water or agitation. In this study, the effect of time of exposure to various concentrations of sulfur dioxide based on the hide weight was examined. Hide samples exposed to approximately 0.33, 0.5, and 0.66 percent sulfur dioxide from 0.5 hr to 20 hr and stored at 86F were adequately preserved for 3 to 28 days and in some cases up to 17+ weeks. Preservation was judged by microbial counts, 1-hr gelatin film test, and observation. Unfleshed cowhides that were exposed to 0.66 percent sulfur dioxide for 3 and 6 hr were preserved for 14 and 21 days, respectively, and produced acceptable leather when tanned in a commercial tannery. Factors that are important to the preservation of fresh hides with this gas are discussed. |
En ligne : |
https://drive.google.com/file/d/1f8sSafIXcJIAt2jJqqsHV_Jm51gTifYo/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17688 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXVI (Année 1981) . - p. 436-446