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]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
22340	-	Périodique	Bibliothèque principale	Documentaires	Disponible
22341	-	Périodique	Bibliothèque principale	Documentaires	Disponible

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]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21086	-	Périodique	Bibliothèque principale	Documentaires	Disponible

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)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 1 (01/2018) . - p. 12-18 Titre : Preservation of bovine hide using less salt with low concentration of antiseptic, Part I : effectiveness of developed formulations Type de document : texte imprimé Auteurs : Majher I. Sarker, Auteur ; Wilbert Long, Auteur ; Cheng-Kung Liu, Auteur Année de publication : 2018 Article en page(s) : p. 12-18 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bactéries -- Comptage Chlorure de sodium -- Suppression ou remplacement Cuirs et peaux -- Analyse Cuirs et peaux -- Conservation Cuirs et peaux de bovins Cytométrie de flux Formulation (Génie chimique) Hydratation Microscopie Peaux brutes -- Détérioration Tests d'efficacité Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Bovine raw hides are commercially cured either with high salt concentration of about half the weight of actual hide or 95% saturated brine solution. This conventional technique is very popular due to the availability of common salt (sodium chloride) and its cost-effective procedure but it generates a huge pollution problem increasing salinity. As a result, an alternative method of using less or no salt for hide preservation needs to be developed. For the preservation of hide it is essential to arrest microbial attack on hide as the main constituent of raw hide is protein which is very susceptible for bacterial degradation. Such bacterial degradation leads to the putrefaction of raw hide before converting them into leather. Agricultural Research Services scientists at Wyndmoor, Pennsylvania, have developed antiseptic based formulations for hide curing where only 45% saturated brine solution is used. The newly developed formulations have been found more effective in limiting microbial growth for a longer time on cured skin than the regular brine process and thus preserve hides for more than 30 days. In-process analysis of cured hides during storage period reveals the compatibility of the alternative curing process in comparison to the traditional method. Therefore, this new development will not only preserve hide through better protection from microorganisms but also offers improved conservation of the environment. Note de contenu : - EXPERIMENTAL : Materials - Protocol for the alternative hide preservation - Efficiency analysis of the developed formulations in limiting microbial growth - Determination of water activity and moisture content - Determination of bacterial count - Texture analysis of the cured hides - Scanning electron microscope studies (SEM) - Rehydration of cured hides - Hide degradation analysis - RESULTS AND DISCUSSION : Efficacy tests for the developed formulations - Bacterial count in cured hides - Texture analysis - Microscopie analysis of cured hides - Rehydration studies - Physical changes of the cured hides En ligne : https://drive.google.com/file/d/1j7WnpJKjBtDWbWzwGFVUqSFb3S3d1HVN/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29747 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
19487	-	Périodique	Bibliothèque principale	Documentaires	Disponible

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)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 10 (10/2018) . - p. 335-343 Titre : Preservation of bovine hide using less salt with low concentration of antiseptic, Part II : Impact of developed formulations on leather quality and the environment Type de document : texte imprimé Auteurs : Majher I. Sarker, Auteur ; Wilbert Long, Auteur ; George J. Piazza ; Nicholas P. Latona ; Cheng-Kung Liu Année de publication : 2018 Article en page(s) : p. 335-343 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antiseptiques Bactéries -- Comptage Bain de trempe Chimie analytique 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 -- Conservation Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux de bovins Déchets -- Réduction Eaux usées -- Analyse Evaluation Formulation (Génie chimique) Microscopie électronique à balayage Pollution -- Lutte contre Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The traditional method for bovine hide preservation requires approximately 40-50% sodium chloride on raw hide weight or 95% saturated brine solution in case of wet salting. This salt resides in wastewater after the soaking process and generates a huge environmental pollution in the form of total dissolved solids (TDS) and chlorides (Cl-) during leather processing. The current research has developed antiseptic based hide curing formulation using 45% saturated brine solution which reduces 50% salt usage in compare to traditional method. The newly developed formulations have been found more effective in limiting microbial growth on cured hide than the conventional method preserving the bovine hide for more than 30 days. In this study, post-leather analysis e.g. grain pattern, scanning electron microscopic images, mechanical properties and organoleptic evaluation reveal that the crust leather produced from alternatively cured hides are comparable to the control obtained from traditionally preserved hide. The efficacy of the alternative system is also assessed by monitoring the environmental impacts caused by the leather processing effluents on the basis of TDS and chloride content, total solids (TS), total aerobic bacterial counts in soaking liquor, Bio-Chemical oxygen demand (BOD) and Chemical oxygen demand (COD). The environmental advantages of the alternative hide curing method are determined particularly by 50% reduction of TDS and chloride content. Therefore, this new method is feasible and industrially preferable to the traditional hide curing process. Note de contenu : - EXPERIMENTAL : Materials - Laboratory scale protocol for the alternative hide preservation - Analysis of soaking liquid generated in leather processing - Total aerobic bacterial colony count of soaking liquor - Analysis of TOC and COD in soaking liquor - BOD Analysis of soaking liquor - Tanning of cured hides - Evaluation of leather quality - Microscopic imagining - RESULTS AND DISCUSSION : Aerobic bacterial colony count determination - Chloride content determination - Determination of TOC and COD in soaking liquor - Determination of BOD - Determination of solid polluants - Quality determination of crust leather - Grain surface pattern study - Surface image of crust leather using scanning electron microscope - Determination of mechanical properties of leather - Subjective evaluation of leather En ligne : https://drive.google.com/file/d/1B7igaBkCvu9Oiy-sIBEL1uBDEn0ZF64o/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31097 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20280	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 4 / 4)