| Titre : |
Effect of various alkalinity-inducing agents on chemical and physical properties of protein products isolated from chromium-containing leather waste |
| Type de document : |
texte imprimé |
| Auteurs : |
Maryann M. Taylor, Auteur ; Eleanor M. Brown, Auteur ; William N. Marmer, Auteur ; Edward J. Diefendorf, Auteur |
| Année de publication : |
1994 |
| Article en page(s) : |
p. 221-228 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
We have demonstrated that gelable and hydrolyzed protein products can be obtained from chromiumcontaining leather waste. Depending on the choice of alkalinity-inducing agent added, products with varying chemical and physical properties can be isolated. Also, we have shown that the ash content of these isolated protein products will be dependent not only on the choice of alkalinity-inducing agent, but also on the chemical make-up of the original substrate. One of the components of the ash is chromium and its content is also influenced by the choice of alkalinity-inducing agent. We found that adding magnesium oxide in combination with sodium or potassium hydroxide increases the chromium content in the gelable protein products over that obtained with magnesium oxide alone. Substituting carbonate salts for sodium or potassium hydroxide lowers the chromium content of the gelable protein products. Choice of alkalinity-inducing agent has little effect on the chromium of the hydrolyzed protein products. With respect to Bloom value and viscosity of the gelable protein products, magnesium oxide alone give the superior product, whereas the introduction of carbonates and hydroxides has a detrimental effect. Hydroxide is more detrimental than carbonate. In this study we have shown that a variety of products can be isolated with varying properties and these properties will be dependent on the desired end use of the protein product. |
| En ligne : |
https://drive.google.com/file/d/1Fc8iKyYcnR6F42FZJIG5D9JC1hvvdpdn/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8071 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXIX, N° 7 (07/1994) . - p. 221-228
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Effect of various alkalinity-inducing agents on chemical and physical properties of protein products isolated from chromium-containing leather waste in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIX, N° 7 (07/1994)
