Whey protein isolate : a potential filler for the leather industry / Eduard Hernàndez Balada in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 4 (04/2009)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 4 (04/2009) . - p. 122-130 Titre : Whey protein isolate : a potential filler for the leather industry Type de document : texte imprimé Auteurs : Eduard Hernàndez Balada, Auteur ; Cheng-Kung Liu, Auteur ; Eleanor M. Brown, Auteur ; Maryann M. Taylor, Auteur ; Jaume Cot Année de publication : 2009 Article en page(s) : p. 122-130 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The upgrading of leather that presents loose areas and poor grain break is one of the most value adding opportunities for a tanner. Typically, petroleum-based products are used to improve the final appearance and feel of crust leather. In this study, we demonstrate that blends composed of whey protein isolate (WPI), a byproduct of the cheese industry, and small amounts of gelatin, a byproduct of the leather industry, could be effectively used as filling agents for both shoe upper and upholstery leather. Wet blue leather from three different areas in the hide (butt, belly and neck) was treated with the WPI-gelatin blend, retanned, colored and fatliquored, and their subjective and mechanical properties evaluated. The effect of pretreatment of the wet blue samples with various concentrations of the enzyme microbial transglutaminase (mTGase) was also examined. It was found that the rate of uptake of the WPI-gelatin blend by upholstery wet blue increased four-fold when it was pretreated with a 2.5% mTGase solution. Conversely, this rate was decreased when shoe upper was pretreated with increasing amounts of mTGase. The subjective properties (e.g. handle, fullness, color and grain break) of both shoe upper and upholstery leather that were treated with the WPI-gelatin blend were significantly improved over the controls. Importantly, the grain break of the belly area of samples that were pretreated with enzyme (both upholstery and shoe upper) was remarkably improved. Hence, fillers mainly composed by the less expensive WPI were demonstrated to be effective filling agents for both upholstery and shoe upper leather. En ligne : https://drive.google.com/file/d/1EMtJdplpyAfC500s_wozq1UnuV9TN3be/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4805 [article]

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