Effective removal of manure-mud balls from cattle hides using thioglycolate salt containing formulations / Hailemichael O. Yosief in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 9 (09/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 9 (09/2022) . - p. 359-366 Titre : Effective removal of manure-mud balls from cattle hides using thioglycolate salt containing formulations Type de document : texte imprimé Auteurs : Hailemichael O. Yosief, Auteur ; Majher I. Sarker, Auteur ; Syed Ammar Hussain, Auteur ; Zerlina E. Muir, Auteur Année de publication : 2022 Article en page(s) : p. 359-366 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bovins -- Fumier 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 -- Propriétés mécaniques Encrassement Formulation (Génie chimique) Peaux brutes -- Nettoyage pH -- Mesure Produits nettoyants Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The effective removal of hardened manure/mud balls from cattle hides remains a challenge for the livestock industry. Hardened manure/mud balls must be removed to minimize the risk of microbial meat contamination and hide quality deterioration. To overcome this challenge, we developed thioglycolic acid and its sodium, potassium and ammonium salts containing formulations. In this study, the developed four formulations were compared based on their efficacy in removing adobe type mud/manure balls from the hides in short time. Hide pieces containing hardened manure/mud balls were soaked in the formulations for 5 minutes followed by gentle brushing to remove the debris. The firmly attached mud/manure balls were removed completely from the hide pieces soaked in sodium, potassium and ammonium thioglycolate containing formulations. However, thioglycolic acid containing formulation did not show that much efficacy and the debris remained attached in the hide pieces soaked in water which was used as a control. Moreover, naturally onboard aerobic bacteria count was significantly reduced along with the mud/manure balls removal from hide pieces. After treatment, the hide pieces were processed into crust shoe leather for quality check analysis including mechanical properties, leather surface analysis and general appearance. The crust leathers made from hide pieces treated with the formulation exhibited similar quality to that made from the control. The implementation of this inventive formulations in slaughterhouses or leather industry will drastically reduce the time consuming and labor-intensive operations currently employed to remove firmly attached debris from cattle hide surface. Note de contenu : - MATERIALS AND METHODS : Preparation of mud/manure removing formulation - Determination of pH of the developed formulations - Manure/mud removing method - Microbial testing - Tanning and leather quality analysis - RESULTS AND DISCUSSION : pH of the developed formuations - Efficacy of different manure/mud removing formulation - Aerobic bacterial count - Quality analysis of crust leather - Mechanical properties - Grain surface analysis of leather panels - Subjective test analysis of leather panels - Table 1 : Composition of manure removing formulations - Table 2 : pH of the formulations - Table 3 : Mechanical properties of the finished leather product after treating with the manure removing formulations - Table 4 : Subjetive properties for leather samples made after treating with the manure removing formulations DOI : https://doi.org/10.34314/jalca.v117i9.6166 En ligne : https://drive.google.com/file/d/1JB9yZYBthDABNNz2SoWMy7SEBJdA2RdR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38075 [article]

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Efficacy of aqueous solution of N-halamine to reduce microbiological contamination on cattle hides for meat safety with byproduct quality assurance / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 9 (09/2020)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 9 (09/2020) . - p. 330-336 Titre : Efficacy of aqueous solution of N-halamine to reduce microbiological contamination on cattle hides for meat safety with byproduct quality assurance Type de document : texte imprimé Auteurs : Majher I. Sarker, Auteur ; Wilbert Long, Auteur ; Cheng-Kung Liu, Auteur Année de publication : 2020 Article en page(s) : p. 330-336 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens 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 -- Propriétés mécaniques Cuirs et peaux -- Propriétés organoleptiques Cuirs et peaux de bovins Microbiologie Microscopie N-halamine Solutions aqueuses (chimie) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Bacterial contamination on the outer grained hide of cattle serves as a significant challenge to the meat and bide processing plants regarding food safety. Cattle serves as a host to several bacteria including pathogens, which may become firmly lodged on a cattle's bide during their lifespan and can facilitate cross contamination of the underlying meat and meat processing equipment in a slaughterhouse. In this study, the efficacy of sodium dichloroisocyanurate dehydrate (SDCIC), which belongs to N-halamine group of compounds is evaluated on inhibition of the natural-borne bacteria from the haired surface of cattle bide. Spray-washing with 0.25%, 0.50% and 0.75 % aqueous SDCIC solutions reduced total aerobic bacteria on hide surface by 1.6 and 2.37 and 3.57 log CFU/50 cm'respectively in 5 min. Similarly, in comparison with water spray, a 5 min treatment with 0.25, 0.50 and 0.75 % SDCIC resulted in a reduction of Enterobacteriaceae (ENT) and related gram-negative bacilli (gnEB) counts by 1.2, 2.22 and 4.22 log CFU/50 cm' respectively. The highest reduction of E. coli recovery of 1.48 log CFU/50 cm2 was obtained with a spray treatment of 0.75 % SDCIC in 1 minute. Likewise, 0.75 % SDCIC spray treatment resulted in 2.5 and 3.65 log CFU/50 cm2 reduction of Salmonella in 1 and 5 min, respectively in comparison to their respective controls. Leather from treated hides was tested to evaluate the effects of N-halamine solutions on structural, mechanical and subjective properties of produced leather in which no major detrimental impacts were found. Note de contenu : - EXPERIMENTAL : Materials and methods. Antimicrobial formulation preparation - Disk diffusion analysis of the developed formulations - Hide preparation - Spray treatment - Microbial testing - Leather processing - Impact of the antimicrobial treatment on leather quality - Statistical analysis - RESULTS AND DISCUSSION : Disk diffusion assay - Recovery of total aerobic bacteria - Recovery of enterobacteriaceae (ENT) and related gram-negative bacilli (gnEB) - Recovery of E. coli - Recovery of salmonella - Post-leather analysis - Microscopic analysis of crust leather - Organoleptic evaluation of leather samples - Evaluation of leather samples for mechanical properties DOI : https://doi.org/10.34314/jalca.v115i9.3852 En ligne : https://drive.google.com/file/d/1Z2NwNy_DOA-bRBv2IZc42D_cCCtrrCL7/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34586 [article]

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Limiting microbial activity as an alternative approach of bovine hide preservation, Part I : Efficacy of developed formulations / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 7 (07/2019)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 7 (07/2019) . - p. 271-278 Titre : Limiting microbial activity as an alternative approach of bovine hide preservation, Part I : Efficacy of developed formulations Type de document : texte imprimé Auteurs : Majher I. Sarker, Auteur ; Wilbert Long, Auteur ; Cheng-Kung Liu, Auteur Année de publication : 2019 Article en page(s) : p. 271-278 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chlorure de sodium -- Suppression ou remplacement Cuirs et peaux -- Conservation Cuirs et peaux de bovins Formulation (Génie chimique) Hydratation Microbiologie Produits de conservation du cuir Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The traditional wet salting technique of bovine hide curing requires 95% or more saturated brine solution which generates a huge amount of pollution and salinity in the form of total dissolved solids (TDS) and chlorides (Cl-) during leather processing. Therefore, much attention is currently placed on tanneries requiring reduction or eliminate the use of sodium chloride as a raw hide/skin preservative. For the preservation of hide it is essential to arrest microbial attack as the collagen-breaking enzymes called collagenase produced by the bacteria can cause serious degradation on hide which leads to the putrefaction of raw hide before converting them into leather. In this research effort, a number of formulas have been developed and evaluated for their efficacy in preserving bovine hide for 30 days or more. This attempt has been made to evolve a least chloride containing curing system for salinity abatement, where 35% saturated brine is used as the base solution. The developed formulations have been evaluated with better efficacy than the conventional technique on limiting bacterial growth, controlling yeast and mold during the storage period of cured hide. The alternative methods also offer quick rehydration of cured hide during leather processing and Airborne Ultrasonic scanning detects no detrimental impact on alternatively cured hides. Therefore, this new development is ideally suited for hide preservation through better protection of hide from microbial degradation and improved conservation of environment in compare to the traditional method. Note de contenu : - EXPERIMENTAL : Materials - Protocol for the alternative hide preservation - Effectiveness of the developed formulations in limiting microbial growth - Measurement of water activity (wa) and moisture content - Determination of bacterial colony count - Yeast and molds determination experiment - Airborne ultrasonic (AU) scanning - Rehydration of cured hides - Degradation assessment of cured hides - RESULTS AND DISCUSSION : Efficacy analysis of the developed formulations - Water activity and moisture content - Bacterial colony count on cured hides - Yeasts and molds colony count on cured hides - Airborne ultrasonic testing of cured hides - Rehydration anlaysis - Physical changes of the cured hides En ligne : https://drive.google.com/file/d/1X2pm9-1GO3lbEGjTfI_g-3jik5QoP7iS/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32786 [article]

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Limiting microbial activity as an alternative approach of bovine hide preservation part II : impact of developed formulations on leather quality and the environment / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 2 (02/2020)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 2 (02/2020) . - p. 34-62 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 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 [article]

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A novel approach of removing externally attached debris from animal carcass to ensure meat safety and byproduct quality / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 3 (03/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 3 (03/2022) . - p. 96-103 Titre : A novel approach of removing externally attached debris from animal carcass to ensure meat safety and byproduct quality Type de document : texte imprimé Auteurs : Majher I. Sarker, Auteur ; Cheng-Kung Liu, Auteur Année de publication : 2022 Article en page(s) : p. 96-103 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bactéries -- Comptage Carcasses -- Décontamination Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux de bovins Désinfectants Evaluation Formulation (Génie chimique) Nettoyage par pulvérisation Peaux brutes -- Nettoyage Statistique Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, a formulation and technique are developed to be used for cattle carcass decontamination prior to removal of hide in a commercially preferred time-frame to ensure meat safety and byproduct quality. This formulation offers deep cleaning on carcass surface by removing debris including manure/mud balls which are firmly attached to the hair of animal hide harboring pathogens like Salmonella and Escherichia coli. Survival of such pathogens can facilitate cross-contamination of the underlying meat and meat-processing equipment in the packing plant posing a challenge to the meat industry as well as public-health. Also, the attached adobe type mud/manure balls have potential to create holes on the hide during leather processing which degrades byproduct’s quality. Formulation was sprayed on cattle’s hide and the attached debris were brushed off from the surface. The formulation was found very efficient in cleaning the hide surface both at 5 and 8 min treatments. The highest of aerobic, Escherichia coli and Salmonella populations were reduced by 8.71, 3.63 and 3.19 Log CFU/50 in 2 , respectively when compared to water-wash. The efficacy of formulation can be optimized by adjusting its concentration and treatment time. Post-leather analysis showed no detrimental impact on byproduct caused by the formulation. Note de contenu : - MATERIALS AND METHODS : Hide preparation - Preparation of decontamination formulation - Spray treatment on bovine hide panels - Manure/mud balls removing protocol - Microbial testing - Leather and quality evaluation - Statistical analysis - RESULTS AND DISCUSSION : Efficacy of formulation in reducing bacterial population from hide surface - Aerobic bacteria colony count - Escherichia coli colony count - Salmonella colony count - Post-leather analysis - Table 1 : Composition of carcass decontamination formulation - Table 2 : Survival of nature-borne bacteria (Aerobic, escherichia coli and Salmonella) on bovine hide panels following the debris removing treatment - Table 3 : Mechanical properties of crush leather panels produced from water (control) and formulation treated hide pieces DOI : https://doi.org/10.34314/jalca.v117i3.4888 En ligne : https://drive.google.com/file/d/1Lbep5hozSSqvTZIsp5LBQX5aZsYuwwxy/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37600 [article]

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Preservation of bovine hide using less salt with low concentration of antiseptic, Part I : effectiveness of developed formulations / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 1 (01/2018)  

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Preservation of bovine hide using less salt with low concentration of antiseptic, Part II : Impact of developed formulations on leather quality and the environment / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 10 (10/2018)  

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