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Technical differences between U.S. and european automotive leathers / Mike Tomkin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 4 (04/2005)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 4 (04/2005) . - p. 133-136 Titre : Technical differences between U.S. and european automotive leathers Type de document : texte imprimé Auteurs : Mike Tomkin, Auteur Année de publication : 2005 Article en page(s) : p. 133-136 Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure En ligne : https://drive.google.com/file/d/1mWBqgZMek6pyrsX3TmEfFMgxvODXfGod/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4068 [article]

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Utilization of leather industry pre-fleshings in biodiesel production / Selime Colak in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 4 (04/2005)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 4 (04/2005) . - p. 137-141 Titre : Utilization of leather industry pre-fleshings in biodiesel production Type de document : texte imprimé Auteurs : Selime Colak, Auteur ; O. Sari, Auteur ; Hasan Ozgunay, Auteur ; Gökhan Zengin, Auteur Année de publication : 2005 Article en page(s) : p. 137-141 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Fleshing wastes from tanneries create major environmental problems. Despite their considerable fat content, these wastes do not find important usage. Their disposal is also troublesome and costly. We have investigated the possible use of this fat in the production of biodiesel (fatty acid methyl esters) by transesterification, for use as a replacement for fossil fuels. The fat was released from the waste by boiling with water under high speed grinding, dried and used without further refining for the production of fatty acid methyl esters. Evaluation of the product indicated that it was suitable for use as a biodiesel fuel. Thus, a contaminating waste can be transformed into an environmentally friendly fuel, providing economical and ecological profits. En ligne : https://drive.google.com/file/d/1BHI7jGyYcZfsCoYJ-pYOJuG4aYyyeRFO/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4069 [article]

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Raw material quality issues / P. J. Hadley in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 4 (04/2005)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 4 (04/2005) . - p. 142-148 Titre : Raw material quality issues Type de document : texte imprimé Auteurs : P. J. Hadley, Auteur ; P. C. Garnsworthy, Auteur Année de publication : 2005 Article en page(s) : p. 142-148 Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The investment in raw material represents by far the single largest cost to the leather processor yet it is the element that he frequently has the least control over. The life cycle of meat animals offers many opportunities for damage to occur including on the farm, during transport, slaughter, and preservation. Work at BLC has investigated the impact of ectoparasites, specifically the biting louse, Bovicola bovis, on hide quality and appropriate measures to control this commonly occurring pest. In trials involving over 500 cattle, the impact of exposure and treatment with commercial ectoparasiticides was evaluated and leather quality and value assessed accordingly. Animals slaughtered while infested with lice gave hides with low grades and significant levels of light spot and fleck damage. Animals slaughtered having been cleared of lice for a minimum of 6 weeks gave hides with reduced levels of fleck and this improved further up to 13 weeks, although full resolution of damage did not occur. Animals kept lice free throughout their 2 year life span consistently gave hides of high quality with no light spot damage. A further trial evaluated the impact of treating calves at 12 weeks of age and keeping them lice free to slaughter at 2 years compared to calves that did not receive lice treatment in their first year. The untreated calves developed natural lice infestations and their hides displayed higher levels of light spot damage at both chrome tamed and dyed crust stages. The findings of this work suggest that lice cause damage to bovine hides that may demonstrate elements of resolution or healing but is unlikely to resolve completely following treatment. En ligne : https://drive.google.com/file/d/1o4seRQufRjScD_38dz6_FujMk1SNuh4z/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4070 [article]

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Characterization of biopolymers prepared from gelatin and sodium caseinate for potential use in leather processing / Maryann M. Taylor in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 4 (04/2005)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 4 (04/2005) . - p. 149-159 Titre : Characterization of biopolymers prepared from gelatin and sodium caseinate for potential use in leather processing Type de document : texte imprimé Auteurs : Maryann M. Taylor, Auteur ; Eleanor M. Brown, Auteur ; William N. Marmer, Auteur Année de publication : 2005 Article en page(s) : p. 149-159 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Biopolymers formed from crosslinking of different proteins is an area of growing interest. Much has been reported in the literature on the properties of a variety of biopolymers synthesized by enzymatic treatment. These products have the advantage of possessing the unique properties of each protein and have the potential for generating novel products. Prior research from this laboratory demonstrated that gelatins of varying qualities could be enzymatically modified to give products with superior functional properties. These modified gelatins, when examined by SDS-PAGE, were highly polymerized as demonstrated by an increase in higher molecular weight species. In this study, we examined individually the properties of modified proteins from renewable resources, specifically gelatins and casein, as well as their enzymatically combined products. The physical properties and molecular weight distribution of the gelatin conjugate products show that the degree of crosslinking was enhanced by addition of even small amounts of the secondary protein. These unique reactions have the potential of generating products used in leather processing, more specifically in preparation of coatings or as fillers for the leather. En ligne : https://drive.google.com/file/d/1qt0UDah4PSQ7oQqUpRQfHYfX6B_wfKP5/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4071 [article]

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