[article]
| Titre : |
Improved hide quality and rapid unhairing |
| Type de document : |
texte imprimé |
| Auteurs : |
Andrew G. Gehring, Auteur ; David G. Bailey, Auteur ; Gary L. DiMaio, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 339-348 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The quality of hides suffers from their treatment by the packing industry as a byproduct, at best, of meat production. A meat packing company, Future Beef Operations, LLC (FBO), is changing this mentality by developing a vertically integrated cattle operation in which the hide is a product in its own right. A key component of this innovative operation is the rapid unhairing of stunned cattle carcasses prior to flaying in the slaughterhouse. Since it removes hair-associated manure, dirt, and microorganisms, rapid unhairing greatly reduces the cross-contamination of microorganisms on the hide to the meat, thus serving as a food safety measure while allowing for the rapid grading of hide quality and cost savings in downstream tanning operations. Under a cooperative agreement, Agricultural Research Service and FBO developed an effective rapid unhairing process based upon the earlier work (in 1977) by R. Dorstewitz on a rapid through-feed unhairing system. The rapid unhairing process was refined whereupon optimal conditions included 6.2% sodium sulfide at 35°C applied as a pressurized spray (in two applications) to warmed hide piece samples; an additional spray application of the sodium sulfide was used to remove the partially dissolved hair from the samples and subsequent neutralization of residual sulfide (still on the sample pieces) with 3% hydrogen peroxide was brought about in less than 5 min of total reaction time. The process sufficiently removed hair and hide-associated manure balls, allowing for splitting of green hide. The process was further developed to incorporate the recycling of the unhairing agent (sodium sulfide) and recovery of removed hair. Analysis of the recycled unhairing solution over 16 cycles showed a linear consumption of ca. 20% sulfide with a linear gain of ca. 1% nitrogen (proportional to dissolved hair protein content). |
| En ligne : |
https://drive.google.com/file/d/1tCGNdYBGlDCDLOD8F1lGYsQdFLfpdSo7/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4271 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVII, N° 9 (09/2002) . - p. 339-348
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Improved hide quality and rapid unhairing in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVII, N° 9 (09/2002)
