Bacterial and fungal damage in leather / Joseph Ondari Nyakundi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 8 (08/2023)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVIII, N° 8 (08/2023) . - p. 327-339 Titre : Bacterial and fungal damage in leather Type de document : texte imprimé Auteurs : Joseph Ondari Nyakundi, Auteur Année de publication : 2023 Article en page(s) : p. 327-339 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biodégradation Cuirs et peaux -- Analyse Cuirs et peaux -- Détérioration Détérioration bactérienne Détérioration fongique Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Microbial degradation leads to significant loss of quality and economic value by the tanner. This damage cannot be reversed as it involves the degradation of the collagen and elastin fibers, which are important proteins in the leather-making process. It is, therefore, important to carefully monitor the after-slaughter, curing, beamhouse and posttanning processes to prevent this type of damage. This is only possible if you can identify the signs and/or defects caused by bacteria and fungi as early as possible and put in place corrective measures to halt any further or future damage. This study evaluated various techniques for identifying bacterial and fungal damage in leather, including visual inspection, smell, feel, microscopy, and culturing techniques. Samples of cured hides and leather obtained from different sources in the USA were subjected to these techniques to determine the presence of these microbes or to identify their damage. The results highlight various defects and indicators that point to various microbial causes. A combination of visual inspection, microscopy, and culturing techniques can provide hides and skins sellers, packers, and tanners with reliable and accurate identification techniques for identifying early signs of damage. While microscopy was sufficient to observe fungal growth and bacterial damage, culturing was more reliable for identifying the bacterial causative agents. This study highlights the importance of implementing routine inspections and monitoring to prevent continued microbial damage to hides to ensure the quality of the leather. Note de contenu : - INTRODUCTION : Biodeterioration in leather - Impact of biodeterioration on the quality of leather - MATERIALS AND METHODS : Materials - Methods : Custuring techniques - Visual examination - Microscopic examination - RESULTS AND DISCUSSION : Culturing techniques - Visual inspection and microscopy - Table 1 : Biological activity reaction test results after 8 days - Table 2 : Paddle test results after the 48 Hr. - Incubation period - Table 3 : Total aerobic bacteria testing result after 48 hour - Table 4 : Yeast and mold testing results after 5 days - Appendix 1 : Paddle test DOI : https://doi.org/10.34314/jalca.v118i8.8090 En ligne : https://drive.google.com/file/d/1G_Sd25joYXHJN7SPlNKK1QUnlgTwUnBu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39672 [article]

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