Titre : |
Limiting microbial activity as an alternative approach of bovine hide preservation part II : impact of developed formulations on leather quality and the environment |
Type de document : |
texte imprimé |
Auteurs : |
Majher I. Sarker, Auteur ; Hailemichael O. Yosief, Auteur ; Cheng-Kung Liu, Auteur ; Nicholas P. Latona, Auteur |
Année de publication : |
2020 |
Article en page(s) : |
p. 34-62 |
Note générale : |
Bibliogr. |
Langues : |
Américain (ame) |
Catégories : |
Antimicrobiens Bactéries -- Comptage Bains de trempe -- Analyse Chlorure de sodium -- Suppression ou remplacement Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés. Cuirs et peaux -- Analyse Cuirs et peaux -- Conservation Cuirs et peaux -- Propriétés mécaniques Peaux brutes -- Salage
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Index. décimale : |
675 Technologie du cuir et de la fourrure |
Résumé : |
Wet salting of bovine hide commonly utilizes 95% saturated salt solution or 40-50% salt (w/w) on raw hide weight for preservation. The salt used for the hide preservation ends up being in wastewater and generates enormous environmental pollution. To minimize the environmental pollution problem associated with the traditional method of hide preservation, alternative formulations containing antimicrobial agents and less amount of common salt (35% saturated brine) have been developed. The alternative formulations were found to be more effective in deterring microbial growth than the traditional formulation as demonstrated by the total aerobic bacterial count of the preserved hide soaking liquor. The effect of the newly developed formulations on leather quality was assessed by analyzing the mechanical properties, scanning electron microscopic images, grain pattern and organoleptic properties of the finished leather. The quality analysis of the crust leather revealed that, the leather panels produced from the traditionally and alternatively preserved hides were comparable. The environmental impact of the newly developed formulations was also evaluated by monitoring the leather processing effluents for the pollution indicators such as total solids (TS), total dissolved solids (TDS), chloride content, Chemical oxygen demand (COD) and Bio-Chemical oxygen demand (BOD). Overall, the environmental impact of the newly developed hide preserving formulation was less severe than the traditionally used formulation. Since the newly developed formulations did not affect the quality of the leather produced and their impact on the environments is minimum, they could be considered as viable options for combatting pollution problems associated with the traditional salt curing method. |
Note de contenu : |
- EXPERIMENTAL : Materials - Laboratory scale hide preservation protocol - Analysis of soaking liquor generated in leather processing - Aerobic bacterial count of the soaking liquor - yeast and molds colony count of soaking liquor - Measurement of TOC and COD in soaking liquor - BOD analysis of soaking liquor - Tanning operation of cured hides - Determination of leather quality - Microscopic leather surface analysis
- RESULTS AND DISCUSSION : Effect of the developed formulations on limiting bacterial growth - Effect of the developed formulations on limiting yeasts and molds - Determination of chloride content - Measurement of TOC and COD in soaking liquor - Determination of BOD in soaking liquors - Determination of solid pollutants in soaking liquors - Quality analysis of crust leather - Grain surface analysis of leather - Surface analysis of crust leather using Scanning Electron Microscope - Determination of mechanical properties of leather - Subjective test analysis of leather |
DOI : |
https://doi.org/10.34314/jalca.v115i2.1485 |
En ligne : |
https://drive.google.com/file/d/1EJfqdxzrT-84_y8P0ZCjrYFjq3VPFK1g/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33891 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 2 (02/2020) . - p. 34-62