[article]
| Titre : |
Purification of collagenous tissue of the epidermal area during beamhouse processing |
| Type de document : |
texte imprimé |
| Auteurs : |
Jean J. Tancous, Auteur ; Robert J. Harvey, Auteur ; Bruce W. Buehrig, Auteur |
| Année de publication : |
1999 |
| Article en page(s) : |
p. 20-32 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Purification of collagenous tissue of the epidermal area during beamhouse processing has been studied by using a fractionation technique. The epidermal area to the base of the hair pockets was isolated and separated into a residue fraction, a coagulable protein fraction , and a gelatin fraction. The gelatin fraction represented collagenous tissue. Collagenous tissue of the epidermal area of bated stock supplied by thirteen different tanneries varied from 78.6 to 91.3%. Collagenous tissue of the epidermal area of unbated, delimed stock, processed at a tannery, was 83.7%, it was purified by bating, in the laboratory, to 88.4% with a 1-hour bate and to 91.3% with a 3-hour bate. Collagenous tissue of the epidermal area of unbated, delimed stock, processed at another tannery, was 87.9%, it was purified by bating at this tannery to 90.5%. A wash after bate did not improve purification but pickling (or acidification) gave futher purification over bating. |
| Note de contenu : |
- TANNERY SAMPLES
- U.S.H.S.L.A LABORATORY PROCEDURES: Preparation of two, two-inch squares samples - Preparation of epidermal-area samples - Fractionation of samples - Residue fraction - Gelatin fraction - Coagulable protein fraction - Method of processing laboratory control samples - Laboratory bating studies
- RESULTS AND DISCUSSION: Comparison of two-inch squares samples with epidermal area samples - Comparison of laboratory processing and tannery processing - Laboratory bating of tannery-processed, steerhide samples - Vegetable-tanned leather processing - Chrome-tanned leather processing - Improvement of purification of epidermal area by bating over deliming - Effect of washing after bating on purification - Effect of pickling after bating on purification - Effect of lowering pH after bating on purification - Appearance of residue - Coagulable protein fraction |
| En ligne : |
https://drive.google.com/file/d/1YCs6WUep2BxEhb4KzAau9IEq2U0o6vK0/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4492 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIV, N° 1 (01/1999) . - p. 20-32
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Purification of collagenous tissue of the epidermal area during beamhouse processing in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIV, N° 1 (01/1999)
